Study on a nonlinear dynamic characteristic of the positive flow pump in its pilot hydraulic cylinder

Weiqi Sun, Yong Sang, Lianjie Liao, Luming Jiang, Guoshuai Li, Fuhai Duan, School of Mechanical Engineering, State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering

Published online on August 28, 2024

Abstract

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, Volume 240, Issue 2, Page 2236-2244, April 2026.
The displacement of the positive flow pump is controlled by its pilot hydraulic cylinder. The tracking performance of the pump displacement directly affects the energy saving of the hydraulic excavator through power matching. In this article, a nonlinear ...