The valve-controlled cylinder position servo system has the advantages of large output force and large power. As characteristics of nonlinearity and uncertainty exist in the hydraulic servo system, it is difficult for the traditional PID control to meet the requirements of high precision and control. The active disturbance rejection control (ADRC) considers the uncertainty of the system and external disturbances as the total disturbance. In this paper, the valve-controlled cylinder servo system is designed based on ADRC, its working principle is described, and its mathematical model and cosimulation model based on MATLAB-AMESim are established. In the case of constant load, variable load, and long pipeline, the comparative simulation of ADRC and PID is carried out. The simulation results show that the ADRC can effectively suppress the disturbance of the internal parameter changes and external load changes of the hydraulic system and has strong robustness and high control accuracy. This study provides a reference for the application of ADRC in electrohydraulic servo systems.

中文翻译：

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基于MATLAB-AMESim协同仿真的气门控制气缸伺服系统主动扰动抑制控制

阀控缸位置伺服系统具有输出力大，功率大的优点。由于液压伺服系统存在非线性和不确定性的特点，传统的PID控制很难满足高精度和控制的要求。主动干扰抑制控制（ADRC）将系统的不确定性和外部干扰视为总干扰。本文基于ADRC设计了阀控气缸伺服系统，阐述了其工作原理，建立了基于MATLAB-AMESim的数学模型和协同仿真模型。在恒定负载，可变负载和长管道的情况下，对ADRC和PID进行了比较仿真。仿真结果表明，ADRC能有效抑制液压系统内部参数变化和外部载荷变化的干扰，鲁棒性强，控制精度高。该研究为ADRC在电液伺服系统中的应用提供了参考。