泵控马达速度伺服系统建模与仿真分析
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摘要
泵控闭式系统工作效率高且油液不易被污染,因此大功率伺服系统都乐于采用此种控制方式。特别是电液比例变量泵和定量马达组成的闭式液压控制系统,在泵控闭式系统中最为常见。该文运用MATLAB软件Simulink模块和Simscape模块,建立了交流电动机驱动的电液比例变量泵控定量马达恒速控制系统时域仿真模型,取得了较好的仿真效果。通过仿真验证了泵马达流量耦合特性、负载突变干扰和变量泵输入转速扰动等因素对恒速控制性能的影响;并分析了电液比例方向阀和电动机驱动的模型简化对仿真性能的影响。
Because of the high efficiency and the oil is not easy to be polluted, the high power servo system is willing to adopt pump controlled closed system. In particular, the closed hydraulic control system composed of the electro-hydraulic proportional variable displacement pump and the fixed displacement motor is the most common. In this paper, the Simulink module and the Simscape module of MATLAB are used to establish the time domain simulation model of the constant speed control system. The variable pump is driven by the AC motor. The simulation result of time domain model is desirable. By simulation, the influence on constant speed control performance by flow coupling of pump and hydraulic motor, load disturbance and variable pump input speed disturbance is verified. The influence on model simplification of electrohydraulic proportional directional valve and AC motor is analyzed.
Because of the high efficiency and the oil is not easy to be polluted, the high power servo system is willing to adopt pump controlled closed system. In particular, the closed hydraulic control system composed of the electro-hydraulic proportional variable displacement pump and the fixed displacement motor is the most common. In this paper, the Simulink module and the Simscape module of MATLAB are used to establish the time domain simulation model of the constant speed control system. The variable pump is driven by the AC motor. The simulation result of time domain model is desirable. By simulation, the influence on constant speed control performance by flow coupling of pump and hydraulic motor, load disturbance and variable pump input speed disturbance is verified. The influence on model simplification of electrohydraulic proportional directional valve and AC motor is analyzed.
引文
[1]沈伟,崔霞.比例伺服阀静动态特性仿真建模[J].计算机仿真,2015,32(2):236-240.
[2]沈伟,崔霞.阀控马达速度伺服系统自抗扰控制研究[J].计算机仿真,2016,33(8):317-321.
[3]黄人豪.泵-马达闭式液压回路及其组合化[J].舰船科学技术,1980,(2):34-46.
[4]刘长年.泵控马达式速度系统的优化设计方法[J].中国科学A辑,1986,(2):205-213.
[5]陈铮,朱荣初,曾俊英.泵控油马达转速控制系统的研制[J].航空学报,1987,8(4):B157-B164.
[6]彭增雄,苑士华.液压泵控马达数字调速系统研究[J].北京理工大学学报,2009,29(3):205-208,232.
[7]何刘宇,李运华.闭式泵控马达系统反拖工况缓速制动系统设计[J].液压与气动,2015,(6):35-40.
[8] Manring N D, Johnson R E. Modeling and Designing a Variable-displacement Open-loop Pump[J]. Journal of Dynamic Systems, Measurement, and Control, 1996, 118(2):267-271.
[9]王春行.液压控制系统[M].北京:机械工业出版社,2013.
[10]易孟林,曹树平,刘银水.电液控制技术[M].武汉:华中科技大学出版社,2013.
[11] Merritt H E. Hydraulic Control Systems[M]. New York:John Wiley, 1967.
[2]沈伟,崔霞.阀控马达速度伺服系统自抗扰控制研究[J].计算机仿真,2016,33(8):317-321.
[3]黄人豪.泵-马达闭式液压回路及其组合化[J].舰船科学技术,1980,(2):34-46.
[4]刘长年.泵控马达式速度系统的优化设计方法[J].中国科学A辑,1986,(2):205-213.
[5]陈铮,朱荣初,曾俊英.泵控油马达转速控制系统的研制[J].航空学报,1987,8(4):B157-B164.
[6]彭增雄,苑士华.液压泵控马达数字调速系统研究[J].北京理工大学学报,2009,29(3):205-208,232.
[7]何刘宇,李运华.闭式泵控马达系统反拖工况缓速制动系统设计[J].液压与气动,2015,(6):35-40.
[8] Manring N D, Johnson R E. Modeling and Designing a Variable-displacement Open-loop Pump[J]. Journal of Dynamic Systems, Measurement, and Control, 1996, 118(2):267-271.
[9]王春行.液压控制系统[M].北京:机械工业出版社,2013.
[10]易孟林,曹树平,刘银水.电液控制技术[M].武汉:华中科技大学出版社,2013.
[11] Merritt H E. Hydraulic Control Systems[M]. New York:John Wiley, 1967.