A Hybrid Control with PID-Improved Sliding Mode for Flat-Top of Missile Electromechanical Actuator Systems

doi:10.3390/s18124449

CIOMP OpenIR

	A Hybrid Control with PID-Improved Sliding Mode for Flat-Top of Missile Electromechanical Actuator Systems
	Zhou, M.; Mao, D. P.; Zhang, M. Y.; Guo, L. H.; Gong, M. D.
	2018
发表期刊	Sensors
ISSN	1424-8220
卷号	18 期号:12 页码:15
摘要	Electromechanical actuator (EMA) systems are widely employed in missiles. Due to the influence of the nonlinearities, there is a flat-top of about 64 ms when tracking the small-angle sinusoidal signals, which significantly reduces the performance of the EMA system and even causes the missile trajectory to oscillate. Aiming to solve these problems, this paper presents a hybrid control for flat-top situations. In contrast to the traditional PID or sliding mode controllers that missiles usually use, this paper utilizes improved sliding mode control based on a novel reaching law to eliminate the flat-top during the steering of the input signal, and utilizes the PID control to replace discontinuous control and improve the performance of EMA system. In addition, boundary layer and switching function are employed to solve the high-frequency chattering problem caused by traditional sliding mode control. Experiments indicate that the hybrid control can evidently reduce the flat-top time from 64 ms to 12 ms and eliminate the trajectory limit cycle oscillation. Compared with PID controllers, the proposed controller provides better performance-less chattering, less flat-top, higher precision, and no oscillation.
关键词	electromechanical actuator flat-top limit cycle oscillation chattering PID-ISM compensation Chemistry Electrochemistry Instruments & Instrumentation
DOI	10.3390/s18124449
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60560
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Zhou, M.,Mao, D. P.,Zhang, M. Y.,et al. A Hybrid Control with PID-Improved Sliding Mode for Flat-Top of Missile Electromechanical Actuator Systems[J]. Sensors,2018,18(12):15.
APA	Zhou, M.,Mao, D. P.,Zhang, M. Y.,Guo, L. H.,&Gong, M. D..(2018).A Hybrid Control with PID-Improved Sliding Mode for Flat-Top of Missile Electromechanical Actuator Systems.Sensors,18(12),15.
MLA	Zhou, M.,et al."A Hybrid Control with PID-Improved Sliding Mode for Flat-Top of Missile Electromechanical Actuator Systems".Sensors 18.12(2018):15.

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