汽车转向试验台加载系统惯性力补偿策略研究

摘要

针对汽车转向试验台加载系统的惯性力进行了补偿方法研究，通过机理建模原理建立了汽车转向试验台数学模型并得到简化方框图，求出方框图中相应的传递函数，分析试验台中转向器驱动系统和加载系统存在的耦合，并根据前馈补偿解耦原理设计了前馈补偿解耦控制器，以消除加载系统惯性力，最后将加载系统补偿前后的模型进行了 Simu-link 仿真。解耦仿真结果表明，加入前馈补偿解耦器后，加载系统在不同频率下具有较高的跟踪精度，惯性力有效地得到补偿。%The compensation method for inertia force of load system of a vehicle steering test bench was studied. Through mechanism modeling,the mathematical model of the vehicle steering test bench was established,and the corresponding transfer function was derived.The coupling between steering gear drive system and loading system was analyzed.According to the decoupling principle of feed-forward compensation,the feed-forward compensation decoupling controller was designed to eliminate the inertia force of the loading system.Finally,Simulink simulation was conducted for the model before and after the compensation of the loading system.The simulation results showed that after adding the feed-forward compensation decoupling controller, the loading system has a higher tracking accuracy at different frequencies,and the inertia force is better compensated.