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Volume 15
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10.3390/act15030150
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Article

Finite-Time Prescribed Performance Neural Network Force Control of Electro-Hydraulic Proportional Load Simulator with Output Feedback

by
Zhenle Dong
1,*,
Chao Li
2,
Pengxiang Zhang
1,
Yilong Jia
1,
Jianyong Yao
3 and
Long Liu
4
1
School of Vehicle and Transportation Engineering, Henan University of Science and Technology, Luoyang 471000, China
2
Luoyang Aviation Office, Luoyang 471000, China
3
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
4
No.650 Institute, AVIC Hongdu Aviation Industry Group, Nanchang 448001, China
*
Author to whom correspondence should be addressed.
Actuators 2026, 15(3), 150; https://doi.org/10.3390/act15030150
Submission received: 24 December 2025 / Revised: 30 January 2026 / Accepted: 16 February 2026 / Published: 4 March 2026
(This article belongs to the Special Issue High-Performance Control of Electromechanical Servo System Based on Motor/Hydraulic Actuator)
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Abstract

This paper focus on the high accuracy force control of electro-hydraulic proportional load simulator (EHPLS). Firstly, to weaken the influence of the unknown dead zone of the proportional valve, a mathematic model with a smooth inverse dead zone was constructed. Then, finite-time prescribed performance function, of which the desired steady-state value can be achieved within finite time, is defined to impose constraints on the tracking error, while the neural network feedback is introduced to compensate for the unknown dynamic, which can ensure the tracking accuracy further improved for the entire tracking process in the presence of unknown dead-zone parameters, unknown system parameters and disturbance. Finally, through design modification, the proposed control technologies are realized based on the output feedback signal. Comparative simulations under two desired force trajectories are carried out to verify the effectiveness of the proposed controller.
Keywords: load simulator; electro-hydraulic proportional system; finite-time prescribed performance control; output feedback; neural network load simulator; electro-hydraulic proportional system; finite-time prescribed performance control; output feedback; neural network

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MDPI and ACS Style

Dong, Z.; Li, C.; Zhang, P.; Jia, Y.; Yao, J.; Liu, L. Finite-Time Prescribed Performance Neural Network Force Control of Electro-Hydraulic Proportional Load Simulator with Output Feedback. Actuators 2026, 15, 150. https://doi.org/10.3390/act15030150

AMA Style

Dong Z, Li C, Zhang P, Jia Y, Yao J, Liu L. Finite-Time Prescribed Performance Neural Network Force Control of Electro-Hydraulic Proportional Load Simulator with Output Feedback. Actuators. 2026; 15(3):150. https://doi.org/10.3390/act15030150

Chicago/Turabian Style

Dong, Zhenle, Chao Li, Pengxiang Zhang, Yilong Jia, Jianyong Yao, and Long Liu. 2026. "Finite-Time Prescribed Performance Neural Network Force Control of Electro-Hydraulic Proportional Load Simulator with Output Feedback" Actuators 15, no. 3: 150. https://doi.org/10.3390/act15030150

APA Style

Dong, Z., Li, C., Zhang, P., Jia, Y., Yao, J., & Liu, L. (2026). Finite-Time Prescribed Performance Neural Network Force Control of Electro-Hydraulic Proportional Load Simulator with Output Feedback. Actuators, 15(3), 150. https://doi.org/10.3390/act15030150

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