PWM Design for Active Suspension without External Energy Supply Based on LQG Control

Shian Chen; Xuan Li; Sheng Wang; Jian Lian Zhao; Ze He Tang

doi:10.4028/www.scientific.net/AMM.268-270.1478

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 268-270PWM Design for Active Suspension without External...

PWM Design for Active Suspension without External Energy Supply Based on LQG Control

Abstract:

A PWM controller is designed for the active suspension without external energy supply (ASWEES) using the LQG control method. Based on the quarter-vehicle ASWEES model, Energy flow equation between the suspension and the accumulator with a 2 kW load was deduced and a PWM controller was designed. When 200Hz solenoid valves were adopted, the carrier frequency and series value of the carrier signal were set as 40 and 5 respectively. Simulation results show the suspension quadratic performance index of ASWEES decreases 24.97% than that of the passive suspension. The passive suspension consumes 2.211kW power, but ASWEES reclaims energy of 2 kW.

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Periodical:

Applied Mechanics and Materials (Volumes 268-270)

Pages:

1478-1481

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.268-270.1478

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Online since:

December 2012

Authors:

Shian Chen, Xuan Li, Sheng Wang, Jian Lian Zhao, Ze He Tang

Keywords:

Accumulator, Active Suspension, LQG, Non-External Energy Supply, PWM

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References

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