摘要
高性能电流环是提升永磁同步电机伺服系统性能的重要保证和基础,在控制过程中,电流环易受延迟环节、采样误差等因素影响,需具备较强的抗扰动能力。基于此,文中研究了一种带电流校正环节的改进型无差拍电流控制算法。该方法以传统无差拍电流控制算法为基础,对电流采样环节进行改进。将k时刻的电流采样值与k时刻的电流预测值进行加权处理,作为新的电流反馈值,再进行无差拍控制,抑制采样误差对电流控制的影响,进而提升稳态过程中电流的抗扰动能力。并针对永磁伺服系统样机进行了Matlab仿真和实验,验证了文中方法的正确性和有效性。
The high-performance current loop is an important guarantee and basis for improving the performance of the permanent magnet synchronous motor servo system.In the control process,the current loop is usually susceptible to factors such as delay,sampling error so that it needs to have strong anti-disturbance capability.So an improved deadbeat current control algorithm with current correction is proposed.This method is based on the traditional deadbeat current control algorithm and improves the current sampling link.The current sampling value at time k and the current prediction value at time k are weighted to serve as a new current feedback value,and then deadbeat control is performed.In order to suppress the influence of sampling error on the current control,and then improve the anti-disturbance ability of the current in the steady state process.The simulation and experiments of a permanent magnet servo system prototype are carried out in Matlab to verify the correctness and effectiveness of the proposed method.
作者
姜哲
卜飞飞
潘子昊
轩富强
JIANG Zhe;BU Feifei;PAN Zihao;XUAN Fuqiang(Center for More-Electric-Aircraft Power System(Nanjing University of Aeronautics and Astronautics),Nanjing 210016,China)
出处
《电力工程技术》
2020年第6期177-183,共7页
Electric Power Engineering Technology
基金
中国博士后科学基金特别资助项目(2016T90454)。
关键词
永磁同步电机
电流环
采样误差
无差拍控制
抗扰动
permanent magnet synchronous motor
current loop
sampling error
deadbeat control
anti-disturbance
