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Realization of proportional navigation and lateral acceleration autopilot for endoatmospheric kinetic interceptor with pulse thrusters

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Journal of Beijing Institute of Technology 2011年第4期20卷 462-465页

作者：王江石正海林德福祁载康 School of Aerospace Engineering Beijing Institute of Technology North Automatic Control Technology Research Institute

The guidance and control strategy for endoatmospheric kinetic interceptor controlled by lateral pulse thrusters was detailed.The pulse thruster control system was firstly proposed.The sample-and-hold approach was introduced to design a novel lateral acceleration autopilot on the basis of traditional two-loop topology.Combined with proportional navigation guidance law and the novel autopilot,the overall ballistic trajectory was presented and examined.Simulation results show that the pulse thruster control strategy can greatly improve the control system response speed and the maximal acceleration capability for realizing kinetic kill interception.

关键词： kinetic interceptor pulse thruster acceleration autopilot proportional navigation

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Robust missile autopilot design based on dynamic surface control

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Journal of Systems Engineering and Electronics 2023年第1期34卷 160-171页

作者： ZHOU Jianping LI Wei XIA Qunli JIANG Huan School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

Since the dynamical system and control system of the missile are typically nonlinear, an effective acceleration tracking autopilot is designed using the dynamic surface control(DSC)technique in order to make the missile control system more robust despite the uncertainty of the dynamical parameters and the presence of disturbances. Firstly, the nonlinear mathematical model of the tail-controlled missile is decomposed into slow acceleration dynamics and fast pitch rate dynamics based on the naturally existing time scale separation. Secondly, the controller based on DSC is designed after obtaining the linear dynamics characteristics of the slow and fast subsystems. An extended state observer is used to detect the uncertainty of the system state variables and aerodynamic parameters to achieve the compensation of the control law. The closed-loop stability of the controller is derived and rigorously analyzed. Finally, the effectiveness and robustness of the design is verified by Monte Carlo simulation considering different initial conditions and parameter uptake. Simulation results illustrate that the missile autopilot based DSC controller achieves better performance and robustness than the other two well-known autopilots.The method proposed in this paper is applied to the design of a missile autopilot, and the results show that the acceleration tracking autopilot based on the DSC controller can ensure accurate tracking of the required commands and has better performance.

关键词： acceleration autopilot nonlinear missile dynamics time-scale separation extended state observer dynamic surface control(DSC)

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Analysis of Lever Compensation Effect in Missile acceleration autopilot

Analysis of Lever Compensation Effect in Missile Acceleratio...

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第三十届中国控制会议

作者： CUI Xiaoxi,LOU Yingming,ZHANG Nan,ZHANG Dongxiang North China System Engineering Institute,Beijing 100089,P.R.China

＜正＞The lever compensation effect of missile acceleration autopilot results from the distance between accelerometer and missile center of gravity.Since the distance is rather small,the lever compensation effect has long been ignored when designing missile acceleration autopilot.But in this paper,the influence of lever compensation effect towards autopilot robustness and stability is deduced in formulation and proved by an actual example.At the same time, the principle of lever compensation effect is analyzed by root locus method.The conclusion shows that lever compensation effect is one of the key factors affecting the performance and capability of acceleration autopilots rather than a neglectable aspect.As a result,missile control engineers should consider sufficiently the influences of lever compensation effect.

关键词： Lever Compensation Effect acceleration autopilot Stability Robustness

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