电磁调速采煤机闭环控制系统参数辨识研究  

Study on parameter identification of closed loop system applied in coal shearer with electromagnetic speed regulation

作　　者：何明星[1] 王伟[2] 刘策越[1] 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]邯郸职业技术学院,河北邯郸056000

出　　处：《煤炭科学技术》2016年第3期100-105,共6页Coal Science and Technology

基　　金：河北省科学技术厅资助项目(12213512D)

摘　　要：针对电磁调速采煤机存在闭环PID,控制参数调整效率低,调试困难,从而影响采煤机工作性能的问题,进行了控制系统参数辨识技术研究。为高效调整电磁调速采煤机PID控制参数,使电磁调速采煤机在实际运行时达到预期的性能需求,提出了一种基于继电反馈自整定的电磁调速采煤机系统参数辨识方法,引入继电串级反馈控制,分别对速度外环和电流内环的控制参数在线优化,其更新控制器参数是在系统的稳定工作点附近,并且是在闭环的运行过程中完成的,可自动测定等幅振荡周期,缩短了调整时间,不影响正常的工作过程,系统不需要断电重启,有利于自适应参数电磁调速采煤机闭环控制系统的连续更新运行。仿真和试验结果验证了该方法的辨识参数结果的有效性,改善了控制系统的抗干扰能力。According to the low adjustment rate and difficult adjustment of the closed loop PID control parameters existed in the coal shearer with the electromagnetic speed regulation,thus working performances of the coal shearer was affected and the study on the identification technology of the control system parameters was conducted. In order to high efficiently adjust the PID control parameters of the coal shearer with the electromagnetic speed regulation and to make the coal shearer with the electromagnetic speed regulation to reach the expected performance requirements of the coal shearer with electromagnetic speed regulation at the actual operation period. A parameter identification method of the coal shearer with the electromagnetic speed regulation was provided based on the relay feedback self-setting. The relay series feedback control was introduced and applied to the online optimization of the control parameters for the speed outside loop and current inner loop. To upgrade the parameters of the controller would be near the stable work point of the system,could be completed in the operation process of the closed loop,could automatically measure the constant-amplitude oscillation period,could reduce the adjusted time and would not be affected to the normal work process. The system could be restarted without the power off and could be favorable to the continues upgraded operation of the closed loop control system to the coal shearer with the self suitable parameters and electromagnetic speed regulation. The simulation and test results approved the affectivity of the method identified parameter results and improved the anti interferences capacity of the control system.

关 键 词：电磁调速采煤机 继电反馈控制 闭环控制系统 参数辨识 

分 类 号：TD67[矿业工程—矿山机电]