Robust Design of Main Control Valve for Hydraulic Pile Hammer Flexible Control System

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  • Yong Guo
    Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan university
  • Ping Hu Jun
    Mechanical Engineering Department, Central South University
  • Yan Zhang Long
    Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan university

抄録

The flexible control system for hydraulic pile hammer using main control valve is present to the requirement of rapidly reversing with high frequency. To ensure the working reliability of hydraulic pile hammer, the reversing performance of the main control valve should commutate robustness to various interfere factors. Through simulation model built in Simulink/Stateflow and experiment, the effects of relative parameters to reverse performance of main control are analyzed and the main interfere factors for reversing performance are acquired. Treating reverse required time as design objects, some structure parameters as control factors, control pressure, input flow and gaps between spool and valve body as interfere factors, the robust design of the main control valve is done. The combination of factors with the strongest anti-jamming capability is acquired which ensured the reliability and anti-jamming capability of the main control valve. It also provides guidance on design and application of the main control valve used in large flow control with interferes.

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