本文介绍了采用工业用流量伺服阀加旁路节流实现线性的力控制,构成恒压力高刚度液压轧机的原理;分析了系统的静态和动态特性;通过模拟试验和数字仿真验证了理论分析结果;指出了这种控制方法具有简单可靠、投资少、性能良好等特点,特别适用于中小板带轧机的压下改造。 This paper introduces the principle of using the industrial flow servo valve with bypass throttling to realize the linear force control to constitute the constant pressure and high rigidity hydraulic rolling mill. The static and dynamic characteristics of the system are analyzed. The theoretical analysis results are verified through simulation and numerical simulation It is pointed out that the control method is simple, reliable, less investment and good performance, especially suitable for the rolling reduction of small and medium plate mill.