A semi-physical model for pneumatic control valves

doi:10.1007/s11071-016-2790-5

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	A semi-physical model for pneumatic control valves
	Fang, Lei ; Tang, Li ; Wang, Jiandong ; Shang, Qunli
刊名	NONLINEAR DYNAMICS
	2016
关键词	Pneumatic control valve Semi-physical model Control loop performance FRICTION COMPENSATION STICTION SIMULATION SYSTEMS
DOI	10.1007/s11071-016-2790-5
英文摘要	Pneumatic control valves in practice are usually composed of three signal conversion processes that are associated with significant nonlinearities and dynamics. However, several physical, semi-physical, and data-driven models in the literature describe only one signal conversion process from the actuator force to the valve stem position. In this paper, a semi-physical model is proposed based on the physical principles of the three signal conversion processes. The proposed model contains two new components, namely, a backlash nonlinearity in the electric-pneumatic conversion process and an input-direction-dependent dynamics in the pneumatic-force conversion process. In addition, an updated model for the force-position conversion process is shown to be overdamped, instead of being the underdamped one in the literature. Experimental studies are provided to support the proposed semi-physical model and demonstrate the discrepancies of representatives of existing physical, semi-physical and data-driven models with experimental observations.; National Natural Science Foundation of China [61061130559, 61174108]; SCI(E); EI; ARTICLE; jiandong@pku.edu.cn; 3; 1735-1748; 85
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/491786]
专题	工学院
推荐引用方式 GB/T 7714	Fang, Lei,Tang, Li,Wang, Jiandong,et al. A semi-physical model for pneumatic control valves[J]. NONLINEAR DYNAMICS,2016.
APA	Fang, Lei,Tang, Li,Wang, Jiandong,&Shang, Qunli.(2016).A semi-physical model for pneumatic control valves.NONLINEAR DYNAMICS.
MLA	Fang, Lei,et al."A semi-physical model for pneumatic control valves".NONLINEAR DYNAMICS (2016).