Active Disturbance Rejection Control Of The Novel Variable Speed Direct Drive Pumping System

Ding, Haigang; Zhao, Yatong; Robin, .; Sang, Ziwen; Yang, Chengcheng

doi:10.1109/ccdc52312.2021.9601856

Cited by 1 publication

(1 citation statement)

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“…Ye et al [18] used a double reversing valve with an accumulator to suppress hydraulic shocks of the pumping system. Ding et al [19] proposed a new structure of a variable-speed direct-drive pumping system, established it mathematical model and simulation model and obtained precise control for the concrete cylinder by active disturbance rejection control. These literatures provide useful references for the study of pumping hydraulic systems.…”

Section: Introductionmentioning

confidence: 99%

Accurate Modeling, Operation Laws and Commutation Timing Matching for Concrete Pumping Systems

Ding,

Wang

2023

Applied Sciences

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The pump system is the heart of the concrete pump truck, and its main function is to deliver high-pressure concrete into the pipeline through the reciprocating motion and cooperation of the main cylinder and the distribution valve driven by the swing cylinder. However, there are currently problems, such as unclear pumping operation rules and mismatched commutation timing, that result in poor pumping efficiency and short life of wear parts such as spectacle plates and cutting rings. To address above problems, based on AMEsim software and system test data, this thesis establishes an accurate simulation model of the pump system with more than 90% precision. Based on this model, the simulation reveals the operating rules of the main cylinder and the swing cylinder during the pumping process; draws the commutation timing diagram of the pumping system; clarifies that the commutation timing has four characteristics: sequential, hysteresis, coupling and cyclic; and proposes an optimization scheme for the commutation timing, i.e., reducing the relief pressure of the main cylinder and shortening the swing time of the distribution valve. The proposed optimization has been proven in the market and significantly improved the life of wearing parts by more than 90%. This study provides technical reference for the structure and parameter optimization of concrete pumping systems.

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Section: Introductionmentioning

confidence: 99%