Research on the stiffness of the hottest electric
2022-10-13- Detail
Research on the stiffness of electric servo system
according to the definition of servo stiffness, the method of improving the stiffness of servo system is analyzed from the perspective of control. Based on the time-domain response simulation and frequency-domain bode analysis of an electric servo system, a method of using notch filter series correction to suppress system resonance and improve system gain to improve the stiffness of servo system △ e is proposed. Through simulation and analysis, notch filter can effectively suppress system resonance, Increase the system gain, thereby improving the system stiffness
when the servo system carries the load torque, the output sometimes has a large deviation. When the tension machine, as a kind of precision instrument, has a severe load disturbance, it will even lead to the future instability of the system and other adverse consequences. This problem can be attributed to the insufficient servo stiffness of the system. Starting from the practical problems in engineering application, this paper introduces the concept of servo stiffness, establishes the model of electric servo system, analyzes the key factors that affect the tracking error and stability of servo system under the action of load, expounds the theoretical essence of improving the servo stiffness of the system, and puts forward the control method of using notch filter for series correction, eliminating system resonance and improving system gain to improve the stiffness of servo system. The simulation results show that the notch filter can effectively suppress the resonance of the system, which can further improve the system gain and improve the system stiffness
in the engineering application of electric servo system, the steady-state error increases after the system is loaded, which can not meet the requirements of tracking accuracy. At this time, we hope to reduce the steady-state error of the system by increasing the system gain, but the system oscillates after increasing the system gain, which can not meet the requirements of engineering application. When this kind of problem occurs, usually the product has been produced, and it is difficult to solve it through limited debugging parameters. Even if the barrel temperature is high, the product quality is greatly affected and cannot meet the engineering needs
from the perspective of dynamics, this problem can be attributed to the insufficient servo stiffness of the servo system
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