摘要
针对具有可压缩性和非线性特性的气动执行系统,通过动态过程模型分析,获得全行程运动的动态响应特性,用分段线性化模型对该非线性响应曲线进行描述,建立运算简便、精确度高、响应快的线性化脉宽调制控制策略,实现气动执行系统快速、准确的阀位开度随动控制,并通过仿真实验,确定该控制策略可满足精确定位控制的约束条件.
Dynamic response characteristic of the stroke displacement is obtained by analyzing the dynamic process model for the compressible and nonlinear pneumatic actuation system. Multi-segment linearization models are adopted to describe the nonlinear response curve. A linearization pulse width modulation control strategy with simple calculation, super precision, and sensitive response is established. It realizes the quickly and exactly valve position control of pneumatic actuation system. The constraint condition of accurate control is determined by simulation.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第4期112-115,共4页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家社会科学基金项目(04BZX046).
关键词
气动系统
模型
动态特性
线性化
脉宽调制
pneumatic system
model
dynamic characteristic
linear
pulse width modulation
