基于ADRC的起动机负载测试系统

Starter Load Performance Testing System Based on ADRC

负载扰动、摩擦力扰动、纹波推力扰动和其他不确定扰动严重影响汽车起动机负载测试系统的测试精度和测试速度,电流和转速的协调控制也对系统提出了更高的要求。该文采用自抗扰控制(ADRC)方法,通过扩张状态观测器(ESO)估计出所有未知扰动作用量并给予实时动态补偿,以抑制未知扰动实现"自抗扰"控制,实现了对电流和转速的解耦控制。利用工控机和数据采集卡构建控制系统实验平台,实验结果表明,采用ADRC的起动机负载测试系统测试精度和速度都有较大提高。

Load disturbances,friction disturbance,tipple thrust disturbance and other disturbances deteriorate performance of starter load testing control system severely,and coordination of current and velocity was also put forward higher requirements on control system. In this paper,current and speed decoupling control was realized by applying active disturbance rejection control （ADRC）,using the extended state observer （ESO） to observe and compensate the action of the entire uncertain disturbance. The test bench was build using IPC and data acquisition card,and experiment results show that the testing system using the ADRC has better performances than the past.