Article: Analysis of control characteristics of intelligent digital pump combined with discrete variables Journal: International Journal of Information and Communication Technology (IJICT) 2024 Vol.24 No.8 pp.20 - 38 Abstract: In order to improve the control effect and operation effect of intelligent digital pump, this paper analyses the control characteristics of intelligent digital pump with discrete variable method, and obtains the transfer function of the control system of digital pump through the establishment and analysis of mathematical model. The variable mechanism of digital pump can be simplified as a mechanical-hydraulic servo system in which two-sided slide valves control differential cylinders. The digital pump system based on discrete variable technology is a parallel digital discrete system, which is composed of digital pump and control valve group. The control valve logic topology relation is adopted to realise the combined control of displacement through coded signals. Moreover, the proposed control configuration can significantly improve the displacement control accuracy under the same number of control units, and then reduce the variable impact amplitude. Based on the experimental bench and loader prototype, the digital pump steering system and control strategy are tested and analysed, which verifies the feasibility of this method proposed by this paper. Inderscience Publishers - linking academia, business and industry through research

Title: Analysis of control characteristics of intelligent digital pump combined with discrete variables

Authors: Jinyan Shi; Kechang Zhang

Addresses: Hunan Railway Professional Technology College, ZhuZhou, 412001, China ' Hunan Railway Professional Technology College, ZhuZhou, 412001, China

Abstract: In order to improve the control effect and operation effect of intelligent digital pump, this paper analyses the control characteristics of intelligent digital pump with discrete variable method, and obtains the transfer function of the control system of digital pump through the establishment and analysis of mathematical model. The variable mechanism of digital pump can be simplified as a mechanical-hydraulic servo system in which two-sided slide valves control differential cylinders. The digital pump system based on discrete variable technology is a parallel digital discrete system, which is composed of digital pump and control valve group. The control valve logic topology relation is adopted to realise the combined control of displacement through coded signals. Moreover, the proposed control configuration can significantly improve the displacement control accuracy under the same number of control units, and then reduce the variable impact amplitude. Based on the experimental bench and loader prototype, the digital pump steering system and control strategy are tested and analysed, which verifies the feasibility of this method proposed by this paper.

Keywords: discrete change; intelligent digital pump; intelligent control; control characteristics.

DOI: 10.1504/IJICT.2024.139910

International Journal of Information and Communication Technology, 2024 Vol.24 No.8, pp.20 - 38

Received: 15 Jan 2024
Accepted: 23 May 2024
Published online: 09 Jul 2024 *

Title: Analysis of control characteristics of intelligent digital pump combined with discrete variables

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