Research on Load Estimation for a PMLM Actuated Vibration Stage

International Conference on Manufacturing Technology, Materials and Chemical Engineering

材料科学;化学工业

Fan, Liangzhi^1^2 ; Cheng, Qingsheng^1 ; Kang, Huazhou^1 ; Yang, Xiaofeng^1^3

School of Microelectronics, Fudan University, Shanghai

200433, China^1

School of Mechanical Science and Engineering, Wuhan Textile University, Wuhan, Hubei

430073, China^2

Academy for Engineering and Technology, Fudan University, Shanghai

200433, China^3

关键词: Cogging force;    Constant velocities;    Force constants;    Friction force;    Load estimation;    Servo loops;    Time domain;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/592/1/012083/pdf
DOI  :  10.1088/1757-899X/592/1/012083

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper puts forward a new load estimation method in time domain for PMLM servo loop tuning. This method takes advantage of the symmetry of cogging force distribution and identifies the friction force in constant velocity phase. Experiments have been carried out on a PMLM actuated vibration stage to validate the method. It's discovered that it's better to take an average of two estimations as the true value with movement range by 0.25 pitch's difference so that cogging effect could be eliminated. Moreover, movement range is better to be greater than 1 pitch. Motor force constant should be calibrated according to its actual output.