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Technical Brief

Conceptual Design and Composition Principles Analysis of a Novel Collaborative Rectification Structure Pump

[+] Author and Article Information
Yang Li

Science and Technology on Aircraft Control Laboratory,
School of Automation Science and Electrical Engineering,
Beihang University,
Beijing 100191, China
e-mail: leeyoung303@163.com

Zongxia Jiao

Professor
Science and Technology on Aircraft Control Laboratory,
School of Automation Science and Electrical Engineering,
Beihang University,
Beijing 100191, China
e-mail: zxjiao@buaa.edu.cn

Liang Yan

Professor
Senior Member of IEEE
School of Automation Science and Electrical Engineering,
Beihang University,
Beijing 100191, China
e-mail: lyan1991@gmail.com

Wenhao Dong

School of Automation Science and Electrical Engineering,
Beihang University,
Beijing 100191, China
e-mail: dongwenhao68@163.com

1Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received August 27, 2013; final manuscript received April 21, 2014; published online July 10, 2014. Assoc. Editor: Shankar Coimbatore Subramanian.

J. Dyn. Sys., Meas., Control 136(5), 054507 (Jul 10, 2014) (8 pages) Paper No: DS-13-1336; doi: 10.1115/1.4027505 History: Received August 27, 2013; Revised April 21, 2014

In order to provide a solution of active rectification for linear pumps in pump control system, a novel collaborative rectification structure is conceptually designed in this paper. The fundamental subsystem is the direct drive pump cell (DDPC). A DDPC consists of a cylinder and a valve, and the piston rod and the valve spool are integrated together. The DDPC could be driven by a linear oscillating motor directly. The DDPC working process is logically modeled as a state machine. Certain theorems are given and proved to illustrate the composition principles of a pump system with collaborative rectification. The kinematic flow rate of the collaborative rectification pump is studied. According to the comparison to the existing linear pumps, the novel pump has more structure compactness and control flexibility.

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References

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Figures

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Fig. 1

Structure of a DDPC

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Fig. 2

Symbols and connections in a DDPC

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Fig. 3

Structure of the DDPC

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Fig. 4

A voice coil motor DDPC group

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Fig. 6

State machine in the phase plane of the mover linear motion

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Fig. 7

A double-DDPC module with the collaborative rectification

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Fig. 8

State machines of the two DDPCs

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Fig. 9

Structure of a two-DDPC pump

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Fig. 10

A serial configuration of multi-DDPC collaborative rectification

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Fig. 11

Extension of collaboration mode AB

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Fig. 12

A parallel configuration of multi-DDPC collaborative rectification

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Fig. 13

The typical double-DDPC pump module

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Fig. 14

Cylinder-valve group

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Fig. 15

Sinusoid displacement and velocity of the two movers

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Fig. 16

Flow rate of the interface ports X and Y

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Fig. 17

Efficiency-φ function curve

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Fig. 18

Flow rate with different phase φ

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Fig. 19

Schemes of existing rectification structure

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