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Updated: Nov 11, 2025

Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators
Published on: June 13, 2022
A comparative analysis of the pump controlled, valve controlled and prime mover controlled hydromotor drive to attain
Prabhakar Kushwaha1, Kabir Dasgupta1, Sanjoy K Ghoshal2
1Department of Mining Machinery Engineering, Indian Institute of Technology ISM, Dhanbad, India.
Abstract:
The article compares the dynamic performances of the pump-controlled, valve-controlled and prime-mover controlled hydromotor drive systems for a wide range of operating conditions. The control strategy adopted for each of them varies the supply flow to the hydromotor that gives the regulated drive speed. In this respect, the Simscape models are developed for the said systems that are validated experimentally. On the basis of response time, overshoot, and steady-state error obtained from the simulation and test results, it is found that the valve controlled hydromotor drive system is more sensitive than the others; whereas, the load-sensing pump control requires more time to settle but has less overshoot.
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