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Technical Briefs

Combined Controller for Test System of High Capacity Hydraulic Pump

[+] Author and Article Information
Wenjun Meng

 Taiyuan University of Science and Technology, 030024 Taiyuan, Shanxi, China; Auburn University, Auburn, AL 36832

Jeffrey C. Suhling

 Auburn University, Auburn, AL 36832

J. Dyn. Sys., Meas., Control 132(5), 054502 (Aug 16, 2010) (7 pages) doi:10.1115/1.4001925 History: Received February 19, 2009; Revised November 24, 2009; Published August 16, 2010; Online August 16, 2010

A combined controller (CT-PBC) by contact task control (CTC) with passivity based controller (PBC) is introduced to control test system of high capacity hydraulic pump (HCHP) to measure its properties. It is compared with a vector controller; a torque feedback based combined controller, and two neural network controllers. The results gained from comparing and analyzing these controllers show that under different outlet pressures of HCHP, CT-PBC has good stability and robustness, which meet the requirements to test HCHP. CT-PBC is also simpler and better than other controllers in general.

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Copyright © 2010 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Composition and principle of test system

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Figure 2

Control response of test system without CTC+PBC: (a) speed changes when pressure of pump outlet breaks from 1 MPa to 5 MPa without CTC+PBC-vector control and (b) speed changes when pressure of pump outlet breaks from 5 MPa to1 MPa without CTC+PBC-vector control

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Figure 3

Speed response of test system with VC when load changes 150 Nm

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Figure 4

Speed response of test system with TFCC when load changes 150 Nm

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Figure 5

Block diagram of RBFNNC

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Figure 6

Speed response of test system with TFCC when load changes 130 Nm

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Figure 7

Speed response of test system with RBFNNC when load changes 130 Nm

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Figure 8

Speed response of test system with TFCC when load changes 240 Nm

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Figure 9

Speed response of test system with DRNNC when load changes 240 Nm

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Figure 12

Control response of test system with CTC+PBC: (a) speed changes when pressure of pump outlet breaks from 1 MPa to 5 MPa with CTC-PBC and (b) speed changes when pressure of pump outlet breaks from 5 MPa to 1 MPa with CTC+PBC

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Figure 11

Block diagram of overall test system with CTC+PBC

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Figure 10

Block diagram of system model with CTC+PBC

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