Yi Jiangang

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PID control algorithm is widely used in servo control system. Because of the non-symmetrical structure of the hydraulic cylinders in the angle position electric-hydraulic servo system of plant converter, the conventional PID control has low control precision and bad flexibility. To solve the problem, an improved digital PID control algorithm with variable(More)
To get suitable testing parameters of dynamic characteristics of servo cylinder, the process of dynamic frequency testing was studied with frequency response method (FRM). Through the analysis of the dynamic sampling process, the problem to select proper discrete sequence sampling points and frequency scanning points was solved. The results are verified by(More)
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