Affiliation:
1. Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of
Science and Technology, Harbin, P.R. China
2. College of Mechanical and Power Engineering, Harbin University of
Science and Technology, Harbin, P.R. China
Abstract
Background:
Proportional-integral-differential (PID) controller is widely used in the engineering
field because of its simple structure, high control accuracy, and easy operation. Different patented
PID control technologies have their own advantages, disadvantages, and application scenarios.
Objective:
By analyzing and discussing the improved PID control techniques in the electrohydraulic
servo system, some valuable conclusions have been drawn to predict the future research
and development of PID control techniques.
Methods:
The improved PID control techniques applied to electro-hydraulic servo systems are classified
into three categories: PID parameter tuning technology, PID parameter online adjustment
strategy and compound control strategy combined with PID algorithm.
Results:
By comparing the principles and characteristics of the above techniques, the advantages,
disadvantages and application scenarios of each are analyzed, and the further development of PID
control technology is discussed.
Conclusion:
Based on the characteristics of electro-hydraulic servo systems, the further combination
of the three types of technology can make up for the shortcomings of PID algorithms to form a
control strategy with high control accuracy, high robustness, and fast response speed.
Funder
National Natural Science Foundation of China
Publisher
Bentham Science Publishers Ltd.