摘要
虽然容积调速方法是一项传统内容,但在大力提倡节能环保的今天,由于它的节能特质,应该重新得到重视。基于泵变量调节或马达变量调节的液压容积调速系统,如果采用基于给定值的静态前馈补偿,可以很方便地确定前馈补偿控制律,进而实现静态前馈-反馈复合控制,针对不同的使用场合和控制要求,可以调整前馈和反馈控制器的权重,以获得最佳效果。采用这种控制方法,对于融合了变量泵调速和变量马达调速的宽范围液压容积调速系统,进行AMESim建模和仿真分析。结果表明,这一方法比常规PID方法具有更好的阶跃响应性能和正弦曲线跟踪性能。
Although volume speed-regulating is conventional, it should be attached attention because of its property of energy-saving, especially energy conservation and environment protection being advocated now. Analysis of speed-regulating circuit by the variable displacement pump or motor indicates that the steady-state feedforward compensation control law can be easily calculated for them, and feedforward-feedback compound control can be implemented. For different applications and control demands, different weight coefficients are assigned to the feedforward and the feedback controllers for best effect. This method is used in the hydraulic volume speed-regulation system which includes both the variable delivery pump and the motor speed-regulation, and the AMESim simulation results indicate that it has better performance of step response and sine tracking than conventional PID.
出处
《液压与气动》
北大核心
2015年第1期117-122,共6页
Chinese Hydraulics & Pneumatics
关键词
速度系统
容积调速
前馈补偿
复合控制
AMESIM
speed system, volume speed-regulating, feedforward compensation, compound control, AMESim
作者简介
李万国（1969-），男，北京人，博士研究生，主要从事液压传动与控制和机电一体化方面的研究工作。
