低速轮胎试验机垂直力加载系统研究

Study on Perpendicular Force Loading in Automobile Low-speed Tire Testing Machine

在低速轮胎试验机垂直力加载系统研究过程中,采用伺服比例换向阀作为控制元件,以非对称液压缸为输出元件,以压力传感器作为反馈元件,实现对输出力进行精确的控制。文中介绍了该系统的工作原理,并推导出该系统的动态响应数学表达式。以MATLAB中动态仿真工具SIMULINK软件包为开发工具,将其应用于该闭环控制系统的动态响应计算中,给出了考虑干扰量情况下的SIMULINK仿真方法。

The purpose of this paper is to study the perpendicular pressure system of low-speed tire testing machine. The research methods of the closed loop control system is what uses the servo proportional directional valve as control-unit,the asymmetrical hydraulic cylinder as output unit and the pressure transducer as feeding back unit,realizes to control accurately the out pressure. This paper narrates this system principle of work,and infers this system dynamic response mathematical expression. A dynamic simula...