Research on Digital Controls of Piston Pumps Based on Compound Control Using Feed-Forward and Feedback Controls

Qing Liang Zeng; Bin Bin Liu; Xin Chao Wang; Qiang Gu

doi:10.4028/www.scientific.net/AMM.727-728.843

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 727-728Research on Digital Controls of Piston Pumps Based...

Research on Digital Controls of Piston Pumps Based on Compound Control Using Feed-Forward and Feedback Controls

Abstract:

Taking the swash plate piston pump as the research plant, the paper introduces the composition of digital control system of variable pump first; Then the mathematical model of variable mechanism is established according to which the closed-loop flow control system and the power control system are worked out. Also, the paper shows the stability margin of the control system and analyzes some response indices to step command under Matlab simulation. Aiming at the shortage of the closed-loop control system, the paper gives an idea of an optimization design of the compound power control system based on both feed-forward and feedback control. Compared with the conventional closed-loop power control method, the compound one gets a 47.2% reduction in the adjusting time and a 38.2% decrease in the overshoot indicating that the adjusting process is obviously shortened and the disturbance effect effectively weakened.

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Periodical:

Applied Mechanics and Materials (Volumes 727-728)

Pages:

843-846

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.727-728.843

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Online since:

January 2015

Authors:

Qing Liang Zeng, Bin Bin Liu*, Xin Chao Wang, Qiang Gu

Keywords:

Axial Piston Pump, Compound Control, Control Engineering, Digital Control, MATLAB Simulation

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References

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