泵控式带钢纠偏伺服系统动态特性研究

常用的带钢纠偏系统为阀控缸电液伺服系统,存在维修成本高、系统发热量大、故障率高等问题。论文提出采用直驱式电液伺服系统代替带钢纠偏系统中的阀控式电液伺服系统,采用永磁式同步电动机代替电液伺服阀作为带钢纠偏控制系统的控制元件,设计出了永磁式同步电动机驱动定量泵直接控制液压缸的电液伺服控制系统,利用Matlab/Simulink仿真分析系统的稳定性和动态特性,结果表明,该系统满足带钢纠偏控制对稳定性、响应快速性的要求。

Dynamic Characteristics Research of Strip Guiding Servo System with Pump-Controlled Cylinder

The frequently-used strip guiding system is valve-controlled cylinder electro-hydraulic servo （EHS）system, which has the following existing problems, namely, high maintenance cost, large calorific value and high failure rate etc. This paper presents that the valve-controlled EHS system in strip guiding system can be replaced by the directly-driven EHS system, and permanent-magnet synchronous motor （PMSM）can replace electric-hydraulic servo valve to be the control elements in strip guiding system. Meanwhile, the paper designs EHS system in which the proportional pump driven by PMSM can directly control hydraulic cylinder and analyzes the stability and dynamic characteristics of this system by Matlab/Simulink simulation, the result of which shows that the system bears the advantages of being stable and having speedy response which are required by strip guiding system.