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Model Reference Variable Structure Autopilot Design for Homing Missile 认领 引用 被引量：3
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作者 宋建梅 《Journal of Beijing Institute of Technology》 EI CAS 2001年第4期364-369,共6页
To design the control system for some homing missile so that the autopilot can transfer guidance command correctly and be robust to disturbances, such as the measurement noises and parameter variation caused by areody... To design the control system for some homing missile so that the autopilot can transfer guidance command correctly and be robust to disturbances, such as the measurement noises and parameter variation caused by areodynamic floating. The model reference adaptive control was combined with the variable structure control to design a model reference variable structure (MRVS) control system whose control structure is simple and can be realized easily. The simulation results indicate that MRVS can complete the task of transferring guidance command and suppress the distrubances effectively. 展开更多
关键词 model reference variable structure variable structure control autopilot
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PREDICTIVE VARIABLE STRUCTURE CONTROL FOR A CLASS OF NONLINEAR SYSTEM 认领 引用 被引量：1
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作者 刘春梅 沈毅 +1 位作者 胡恒章 王焕刚 《Chinese Journal of Aeronautics》 EI CAS 1999年第4期231-235,共5页
Nonlinear sliding m ode predictive controller is designed for a class of nonlinear system w ith unm odeled dynam ic characteristics and nonlinear term . The m ethod is based on nonlinear opti- m alpredictive control. ... Nonlinear sliding m ode predictive controller is designed for a class of nonlinear system w ith unm odeled dynam ic characteristics and nonlinear term . The m ethod is based on nonlinear opti- m alpredictive control. The variable structure controllaw m inim izes the quadratic index ofa predic- tive sliding m ode, w hich contains thecostfunction ofcontrolpreventing the controleffectfrom satu- ration for in m ostpracticalim plem entation the controlinputs are bounded by physicalconstraints and energy constraints. According to the im m easurable states, the variable structure observer for nonlin- ear system sisadapted. The variablestructure system m ethod isaptto therealization ofobserverw ith variable param eters and uncertainty. The proofshow s thatthe states ofthe observer asym ptotically convergence to the realstates ofthe system although itisofuncertainty and nonlinear term s. Final- ly, the digitalsim ulation results prove the effectiveness ofthe proposed m ethod. 展开更多
关键词 predictive variable structure control variable structure observer nonlinear system
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Head Pursuit Variable Structure Guidance Law for Three-dimensional Space Interception 认领 引用 被引量：15
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作者 葛连正 沈毅 +1 位作者 高云峰 赵立军 《Chinese Journal of Aeronautics》 SCIE EI CAS 2008年第3期247-251,共5页
This article aims to develop a head pursuit （HP） guidance law for three-dimensional hypervelocity interception, so that the effect of the perturbation induced by seeker detection can be reduced. On the basis of a no... This article aims to develop a head pursuit （HP） guidance law for three-dimensional hypervelocity interception, so that the effect of the perturbation induced by seeker detection can be reduced. On the basis of a novel HP three-dimensional guidance model, a nonlinear variable structure guidance law is presented by using Lyapunov stability theory. The guidance law positions the interceptor ahead of the target on its tlight trajectory, and the speed of the interceptor is required to be lower than that of the target, A numerical example of maneuvering ballistic target interception verifies the rightness of the guidance model and the effectiveness of the proposed method. 展开更多
关键词 head pursuit three-dimensional guidance model nonlinear variable structure Lyapunov stability theory guidance law
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Attitude tracking control for variable structure near space vehicles based on switched nonlinear systems 认领 引用 被引量：22
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作者 Wang Yufei Jiang Changsheng Wu Qingxian 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第1期186-193,共8页
An adaptive robust attitude tracking control law based on switched nonlinear systems is presented for a variable structure near space vehicle （VSNSV） in the presence of uncertainties and disturbances. The adaptive f... An adaptive robust attitude tracking control law based on switched nonlinear systems is presented for a variable structure near space vehicle （VSNSV） in the presence of uncertainties and disturbances. The adaptive fuzzy systems are employed for approximating unknown functions in the flight dynamic model and their parameters are updated online. To improve the flight robust performance, robust controllers with adaptive gains are designed to compensate for the approximation errors and thus they have less design conservation. Moreover, a systematic procedure is developed for the synthesis of adaptive fuzzy dynamic surface control （DSC） approach. According to the common Lyapunov function theory, it is proved that all signals of the closed-loop system are uniformly ultimately bounded by the continuous controller. The simulation results demonstrate the effectiveness and robustness of the proposed control scheme. 展开更多
关键词 Attitude control Fuzzy control Robust control Switched nonlinear systems Variable structure near space vehicle
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Variable Structure Control of Catastrophic Course in Airdropping Heavy Cargo 认领 引用 被引量：33
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作者 Zhang Huiyuan Shi Zhongke 《Chinese Journal of Aeronautics》 SCIE EI CAS 2009年第5期520-527,共8页
The mathematical model of a transport aircraft would be subjected to a sudden change when heavy cargo is dropped off in airdropping,which exerts serious influences upon the safety of the aircraft.A variable structure ... The mathematical model of a transport aircraft would be subjected to a sudden change when heavy cargo is dropped off in airdropping,which exerts serious influences upon the safety of the aircraft.A variable structure controller is specially designed for handling the airdrop process.The nonlinear system is linearized by input-output feedback linearization using differential geometry theories.On this basis,an inner loop system for velocity and attitude tracking control is designed by using the exponentially approaching rule of the variable structure theory.The whole flight control system is integrated with the outer loop flight altitude control.Digital simulation evidences the applicability of the system to potentially catastrophic course in airdropping heavy cargo and provides robustness against system parameter perturbation. 展开更多
关键词 flight control airdrop nonlinear control system variable structure control feedback linearization sliding mode control
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Passive Homing Missile's Variable Structure Proportional Navigation with Terminal Angular Constraint 认领 引用 被引量：28
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作者 SONG Jian-mei ZHANG Tian-qiao 《Chinese Journal of Aeronautics》 EI CAS 2001年第2期83-87,共5页
The objective is to design a variable structure proportional navigation law for the passive homingmissile so that the missile can hit the target with a minimum miss-distance and desired impact attitude anglewithin the... The objective is to design a variable structure proportional navigation law for the passive homingmissile so that the missile can hit the target with a minimum miss-distance and desired impact attitude anglewithin the required overlcad when it flies at a lower trajectory.This paper utilized the variable structure propor-tional navigation with terminal impact attitude angular constraint,and made estimation about the distance rateand distance between the missile and target,which broke the limitation of a passive homing seeker.Furthermore,the paper let the switch gain vary adaptively with time to avoid any larger initial overload.The mathematicalsimulation was completed by some studied passive homing missile's dynamic model,and the simulation resultsshowed that the navigation law of the passive homing missile can make the missile get the required miss-distance and desired impact attitude angle against tanks at lower trajectories and within the maximum overload;also this guidance law is much robust to the estimation eror of distance and distance rate. 展开更多
关键词 passive homing missile terminal angular constraint variable structure proportional navigation switching surface
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Adaptive variable structure control based on backstepping for spacecraft with reaction wheels during attitude maneuver 认领 引用 被引量：7
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作者 宋斌 马广富 李传江 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2009年第1期138-144,共7页
An adaptive variable structure control method based on backstepping is proposed for the attitude maneuver problem of rigid spacecraft with reaction wheel dynamics in the presence of uncertain inertia matrix and extern... An adaptive variable structure control method based on backstepping is proposed for the attitude maneuver problem of rigid spacecraft with reaction wheel dynamics in the presence of uncertain inertia matrix and external disturbances. The proposed control approach is a combination of the backstepping and the adaptive variable structure control. The cascaded structure of the attitude maneuver control system with reaction wheel dynamics gives the advantage for applying the backstepping method to construct Lyapunov functions. The robust stability to external disturbances and parametric uncertainty is guaranteed by the adaptive variable structure control. To validate the proposed control algorithm, numerical simulations using the proposed approach are performed for the attitude maneuver mission of rigid spacecraft with a configuration consisting of four reaction wheels for actuator and three magnetorquers for momentum unloading. Simulation results verify the effectiveness of the proposed control algorithm. 展开更多
关键词 rigid spacecraft attitude maneuver backstepping variable structure control reaction wheel dynamic
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Estimation Method of State-of-Charge For Lithium-ion Battery Used in Hybrid Electric Vehicles Based on Variable Structure Extended Kalman Filter 认领 引用 被引量：18
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作者 SUN Yong MA Zilin +2 位作者 TANG Gongyou CHEN Zheng ZHANG Nong 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2016年第4期717-726,共10页
Since the main power source of hybrid electric vehicle（HEV） is supplied by the power battery,the predicted performance of power battery,especially the state-of-charge（SOC） estimation has attracted great attention ... Since the main power source of hybrid electric vehicle（HEV） is supplied by the power battery,the predicted performance of power battery,especially the state-of-charge（SOC） estimation has attracted great attention in the area of HEV.However,the value of SOC estimation could not be greatly precise so that the running performance of HEV is greatly affected.A variable structure extended kalman filter（VSEKF）-based estimation method,which could be used to analyze the SOC of lithium-ion battery in the fixed driving condition,is presented.First,the general lower-order battery equivalent circuit model（GLM）,which includes column accumulation model,open circuit voltage model and the SOC output model,is established,and the off-line and online model parameters are calculated with hybrid pulse power characteristics（HPPC） test data.Next,a VSEKF estimation method of SOC,which integrates the ampere-hour（Ah） integration method and the extended Kalman filter（EKF） method,is executed with different adaptive weighting coefficients,which are determined according to the different values of open-circuit voltage obtained in the corresponding charging or discharging processes.According to the experimental analysis,the faster convergence speed and more accurate simulating results could be obtained using the VSEKF method in the running performance of HEV.The error rate of SOC estimation with the VSEKF method is focused in the range of 5% to 10% comparing with the range of 20% to 30% using the EKF method and the Ah integration method.In Summary,the accuracy of the SOC estimation in the lithium-ion battery cell and the pack of lithium-ion battery system,which is obtained utilizing the VSEKF method has been significantly improved comparing with the Ah integration method and the EKF method.The VSEKF method utilizing in the SOC estimation in the lithium-ion pack of HEV can be widely used in practical driving conditions. 展开更多
关键词 state of charge estimation hybrid electric vehicle general lower-order model variable structure EKF
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Variable structure guidance law for attacking surface maneuver targets 认领 引用 被引量：17
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作者 Han Yanhua Xu Bo 《Journal of Systems Engineering and Electronics》 SCIE EI 2008年第2期337-341,共5页
The characteristics of surface maneuver targets are analyzed and a 3-D relative motion model for missiles and targets is established.A variable structure guidance law is designed considering the characteristics of tar... The characteristics of surface maneuver targets are analyzed and a 3-D relative motion model for missiles and targets is established.A variable structure guidance law is designed considering the characteristics of targets.In the guidance law,the distance between missiles and targets as well as the missile-target relative velocity are all substituted by estimation values.The estimation errors,the target's velocity,and the maneuver acceleration are all treated as bounded disturbance.The guidance law proposed can be implemented conveniently in engineering with little target information.The performance of the guidance system is analyzed theoretically and the numerical simulation result shows the effectiveness of the guidance law. 展开更多
关键词 air-to-surface missile guidance law variable structure control surface maneuver target.
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Adaptive Variable Structure Control of MIMO Nonlinear Systems with Time-varying Delays and Unknown Dead-zones 认领 引用 被引量：9
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作者 Tian-Ping Zhang Cai-Ying Zhou Qing Zhu 《International Journal of Automation and computing》 2009年第2期124-136,共13页
In this paper,adaptive variable structure neural control is presented for a class of uncertain multi-input multi-output(MIMO)nonlinear systems with state time-varying delays and unknown nonlinear dead-zones.The unknow... In this paper,adaptive variable structure neural control is presented for a class of uncertain multi-input multi-output(MIMO)nonlinear systems with state time-varying delays and unknown nonlinear dead-zones.The unknown time-varying delay uncer-tainties are compensated for using appropriate Lyapunov-Krasovskii functionals in the design.The approach removes the assumption of linear function outside the deadband without necessarily constructing a dead-zone inverse as an added contribution.By utilizing the integral-type Lyapunov function and introducing an adaptive compensation term for the upper bound of the residual and optimal approximation error as well as the dead-zone disturbance,the closed-loop control system is proved to be semi-globally uniformly ultimately bounded.In addition,a modified adaptive control algorithm is given in order to avoid the high-frequency chattering phenomenon.Simulation results demonstrate the effectiveness of the approach. 展开更多
关键词 Adaptive control neural networks(NNs) variable structure control dead-zone nonlinear time-varying delay systems.
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Independent modal variable structure fuzzy active vibration control of thin plates laminated with photostrictive actuators 认领 引用 被引量：4
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作者 He Rongbo Zheng Shijie 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第2期350-356,共7页
Photostrictive actuators can produce photodeformation strains under illumination of ultraviolet lights. They can realize non-contact micro-actuation and vibration control for elastic plate structures. Considering the ... Photostrictive actuators can produce photodeformation strains under illumination of ultraviolet lights. They can realize non-contact micro-actuation and vibration control for elastic plate structures. Considering the switching actuation and nonlinear dynamic characteristics of photostrictive actuators, a variable structure fuzzy active control scheme is presented to control the light intensity applied to the actuators. Firstly, independent modal vibration control equations of photoelectric laminated plates are established based on modal analysis techniques. Then, the optimal light switching function is derived to increase the range of sliding modal area, and the light intensity self-adjusting fuzzy active controller is designed. Meanwhile, a continuous function is applied to replace a sign function to reduce the variable structure control （VSC） chattering. Finally, numerical simulation is carried out, and simulation results indicate that the proposed control strategy provides better performance and control effect to plate actuation and control than velocity feedback control, and suppresses vibration effectively. 展开更多
关键词 Fuzzy active control Independent modal Photostrictive actuators Thin plate vibration Variable structure
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Sliding Mode Variable Structure Control for Visual Servoing System 认领 引用 被引量：10
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作者 Fei Li Hua-Long Xie 《International Journal of Automation and computing》 2010年第3期317-323,共7页
A visual servoing tracking controller is proposed based on the sliding mode control theory in order to achieve strong robustness against parameter variations and external disturbances. A sliding plane with time delay ... A visual servoing tracking controller is proposed based on the sliding mode control theory in order to achieve strong robustness against parameter variations and external disturbances. A sliding plane with time delay compensation is presented by the pre-estimate of states. To reduce the chattering of the sliding mode controller, a modified exponential reaching law and hyperbolic tangent function are applied to the design of visual controller and robot joint controller. Simulation results show that the visual servoing control scheme is robust and has good tracking performance. 展开更多
关键词 Visual servoing sliding mode control variable structure control reaching law time delay.
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Compensation for secondary uncertainty in electro-hydraulic servo system by gain adaptive sliding mode variable structure control 认领 引用 被引量：15
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作者 张友旺 桂卫华 《Journal of Central South University of Technology》 2008年第2期256-263,共8页
Based on consideration of the differential relations between the immeasurable variables and measurable variables in electro-hydraulic servo system,adaptive dynamic recurrent fuzzy neural networks(ADRFNNs) were employe... Based on consideration of the differential relations between the immeasurable variables and measurable variables in electro-hydraulic servo system,adaptive dynamic recurrent fuzzy neural networks(ADRFNNs) were employed to identify the primary uncertainty and the mathematic model of the system was turned into an equivalent linear model with terms of secondary uncertainty.At the same time,gain adaptive sliding mode variable structure control(GASMVSC) was employed to synthesize the control effort.The results show that the unrealization problem caused by some system's immeasurable state variables in traditional fuzzy neural networks(TFNN) taking all state variables as its inputs is overcome.On the other hand,the identification by the ADRFNNs online with high accuracy and the adaptive function of the correction term's gain in the GASMVSC make the system possess strong robustness and improved steady accuracy,and the chattering phenomenon of the control effort is also suppressed effectively. 展开更多
关键词 electro-hydraulic servo system adaptive dynamic recurrent fuzzy neural network（ADRFNN） gain adaptive slidingmode variable structure control（GASMVSC） secondary uncertainty
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VARIABLE STRUCTURE CONTROL APPLIED IN ELECTRO-HYDRAULIC SERVO SYSTEM WITH ANN 认领 引用 被引量：6
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作者 YAO Jianjun WANG Xiancheng +1 位作者 WU Zhenshun HAN Junwei 《Chinese Journal of Mechanical Engineering》 EI CAS 2006年第1期32-36,共5页
The variable structure control （VSC） theory is applied to the electro-hydraulic servo system here. The VSC control law is achieved using Lyapunov method and pole placement. To eliminate the chattering phenomena, a s... The variable structure control （VSC） theory is applied to the electro-hydraulic servo system here. The VSC control law is achieved using Lyapunov method and pole placement. To eliminate the chattering phenomena, a saturation function is adopted. The proposed VSC approach is fairly robust to load disturbance and system parameter variation. Since the distortion. including phase lag and amplitude attenuation occurs in the system sinusoid response, the amplitude and phase control （APC） algorithm, based on Adaline neural network and using LMS algorithm, is developed for distortion cancellation. The APC controller is simple and can on-line adjust, thus it gives accurate tracking. 展开更多
关键词 Variable structure control （VSC） Adaline neural network Pole placement LMS algorithm Amplitude and phase control （APC）
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Vibration control of flexible spacecraft actuated by piezoceramics via variable structure strategy 认领 引用 被引量：3
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作者 胡庆雷 马广富 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第5期604-608,共5页
This paper presented a hybrid control scheme to vibration reduction of flexible spacecraft during rotational maneuver by using variable structure output feedback control （VSOFC） and piezoelectric materials. The cont... This paper presented a hybrid control scheme to vibration reduction of flexible spacecraft during rotational maneuver by using variable structure output feedback control （VSOFC） and piezoelectric materials. The control configuration included the attitude controller based on VSOFC method and vibration attenuator designed by constant-gain negative velocity feedback control. The attitude controller consisted of a linear feedback term and a discontinuous feedback term. With the presence of this attitude controller, an additional flexible control system acting on the flexible parts can be designed for vibration control. Compared with conventional proportional-derivative （PD） control, the developed control scheme guarantees not only the stability of the closed-loop system, but also yields better performance and robustness in the presence of parametric uncertainties and externai disturbance. Simulation results are presented for the spacecraft model to show the effectiveness of the proposed control techniques. 展开更多
关键词 vibration suppression flexible spacecraft variable structure output feedback control attitude maneuver
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Design of Model Following Variable Structure Controller for Three-axle Vehicle 认领 引用 被引量：2
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作者 管西强 张建武 屈求真 《Journal of Donghua University(English Edition)》 EI CAS 2003年第1期100-104,共5页
An optimal control procedure is developed for the front and rear wheels of a three-axle vehicle moving on a complex typical road based on model following variable structure control strategy. The actual vehicle may be ... An optimal control procedure is developed for the front and rear wheels of a three-axle vehicle moving on a complex typical road based on model following variable structure control strategy. The actual vehicle may be considered as an uncertain system. Cornering stiffness of front and rear wheels and external disturbances are varied in a limited range. The model-following variable structure control method is used to control both front and rear wheels steering operations of the vehicle, so that steering responses of the vehicle follow from those of the reference model. By numerical results obtained from computer simulation, it is demonstrated that the control system model can cope with the effects of parameter perturbations and outside disturbances. 展开更多
关键词 Three-axle vehicle Model following control Variable structure control. Uncertain model.
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A Novel Genetic Algorithm and Its Application in Variable Structure Control of Robot 认领 引用 被引量：2
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作者 王建平 许春山 +1 位作者 孙兴进 赵锡芳 《Journal of Shanghai University(English Edition)》 2005年第3期255-260,共6页
A novel genetic algorithm (NGA) is proposed, which possesses micro-regulation and renascence operation. The optimized variable searching interval is regulated gradually according to the sub-group of excellent individu... A novel genetic algorithm (NGA) is proposed, which possesses micro-regulation and renascence operation. The optimized variable searching interval is regulated gradually according to the sub-group of excellent individuals. The NGA is used to optimize the parameters of the variable structure control (VSC), which satisfies the new reaching law and sliding mode. It is used in robot control systems. Simulation results are given. 展开更多
关键词 genetic algorithms variable structure control (VSC) reaching law sliding mode robot.
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Fault detection and accommodation via neural network and variable structure control 认领 引用 被引量：6
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作者 Hao YANG Bin JIANG 《控制理论与应用（英文版）》 2007年第3期253-260,共8页
This paper proposes a novel idea that classifies faults into two different kinds： serious faults and small faults, and treats them with different strategies respectively. A kind of artificial neural network （ANN） i... This paper proposes a novel idea that classifies faults into two different kinds： serious faults and small faults, and treats them with different strategies respectively. A kind of artificial neural network （ANN） is proposed for detecting serious faults, and variable structure （VS） model-following control is constructed for accommodating small faults. The proposed framework takes both advantages of qualitative way and quantitative way of fault detection and accommodation. Moreover, the uncertainty case is investigated and the VS controller is modified. Simulation results of a remotely piloted aircraft with control actuator failures illustrate the performance of the developed algorithm. 展开更多
关键词 Fault detection Fault accommodation Neural network Variable structure control
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Variable Structure Proportional Navigation for Homing Missile 认领 引用 被引量：3
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作者 宋建梅 张天桥 《Journal of Beijing Institute of Technology》 EI CAS 2000年第3期296-301,共6页
The purpose of this paper is to design control loop and guidance loop for the homing missile, to prove that the modified variable structure proportional navigation (VSPN) can be used in passive homing guidance system,... The purpose of this paper is to design control loop and guidance loop for the homing missile, to prove that the modified variable structure proportional navigation (VSPN) can be used in passive homing guidance system, and to compare the VSPN with the proportional navigation (PN). Angular rate and linear acceleration are fed back to improve the stability and robust of autopilot, VSPN and PN are compared in mathematics simulation of homing missile in attacking tanks and helicopters. The damp and the stability of the missile body are increased. The VSPN cuts down the overload of guidance phase dramatically, makes the ballistic trajectory straighter than PN and leads to smaller missdistance. The VSPN can be used for passive homing guidance system, and is especially suitable for attacking helicopter. 展开更多
关键词 homing missile variable structure proportional navigation (VSPN) proportional navigation (PN)
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Fuzzy variable structure delay control algorithms and their applications to AQM 认领 引用 被引量：1
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作者 王明政 李建华 +1 位作者 张文军 诸鸿文 《Journal of Southeast University(English Edition)》 EI CAS 2004年第3期289-296,共8页
This paper analyzes the fuzzy variable structure control algorithms for delay systems and describes the compensation mechanism of the integral factor to the effect of the delay. Based on the linearized model of the co... This paper analyzes the fuzzy variable structure control algorithms for delay systems and describes the compensation mechanism of the integral factor to the effect of the delay. Based on the linearized model of the congestion-avoidance flow-control mode of transmission control protocol (TCP), we present delay control algorithms for active queue management (AQM) and discuss the parameter tuning of the algorithms. The NS (network simulator) simulation results show that the proposed control scheme for the nonlinear TCP/AQM model has good performance and robustness with respect to the uncertainties of the round-trip time (RTT) and the number of active TCP sessions. Compared to other similar schemes, our algorithms perform better in terms of packet loss ratio, throughput and butter fluctuation. 展开更多
关键词 time delay compensation fuzzy variable structure control active queue management robustness
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