Design of High Precision Rate Servosystem with Regulable Dynamic Balance
Based on a certain high precision rate servosystem, the effects to the precision and smoothness induced with electromagnetic moment fluctuation of the motor and dynamic imbalance are emphasized and analyzed in this paper. The static performance of the system is improved neodymium prices
http://www.999magnet.com/products/142-neodymium-prices by dynamic balance modulation and controller design.Firstly, the mechanism model of permanent magnet synchronous motor with vector control is derived by completely decoupling; and so on the mathematics model of the plant. The nominal plant is given by the method of least squares in frequency domain. The principle of the motor moment fluctuation subjected to periodical disturbance in rate table servosystem is analyzed. The quantity and mathematic expression of the moment fluctuation are presented by experimention.Secondly, the method of dynamic balance is studied. The mechanism and project of the dynamic balance system are introduced as an essential element to the whole servosystem. Integrating with the configuration of the system, the arithmetic is given based on statics, meanwhile the method to due with the testing signal is discussed below. Then the dynamic balance of the system is regulated through designed mechanism.Finally, the repetitive control law is introduced to check the electromagnetic moment fluctuation subjected to its periodical characteristic. The Principle of the repetitive controller to reject the periodical disturbance and the stability of the repetitive system are analyzed in detail, meanwhile the method to choose the parameters of the system and the steps of tuning are given. The repetitive controller is used to the rate servosystem and the analytic and design results indicate that the method in this dissertation is feasible and effective. 更多还原
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