Design and Analysis of an Electro-Hydraulic Servo Loading System for a Pavement Mechanical Properties Test Device
Source abstract
Abstract
An electro-hydraulic servo loading system for a pavement mechanical properties test device was designed. The simulation analysis and test results showed that the PID control met the design requirements, but the output’s maximum error did not. Therefore, a fast terminal sliding mode control strategy with an extended state observer (ESO) was proposed. A tracking differentiator was constructed to obtain smooth differential signals from the input signals. The order of the system was reduced by considering the third and higher orders of the system as the total disturbance, and the states and the total disturbance of the system were estimated using the ESO. The fast terminal sliding mode control achieved fast convergence of the system within a limited time. The simulation results showed that the proposed control strategy improved the system accuracy and anti-disturbance ability, and system control performance was optimized.
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Research context
OpenAlex topics: Hydraulic and Pneumatic Systems · Advanced Sensor and Control Systems · Elevator Systems and Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Mechanical and Vehicle Engineering, Changsha University of Science and Technology, Changsha 410114, China
Funding
National Key R&D Program of China · Hunan Provincial Natural Science Foundation of China · Research Foundation of Hunan Provincial Education Department of China
References (35)
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