公路交通科技
公路交通科技
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JOURNAL OF HIGHWAY AND TRANSPORTATION RESEARCH AND DEVELOPMENT
2010年
5期
147-152
,共6页
机械工程%振动压路机%无级调幅%电液控制
機械工程%振動壓路機%無級調幅%電液控製
궤계공정%진동압로궤%무급조폭%전액공제
machanical engineering%vibratory roller%stepless amplitude modulation%electric-hydraulic control
针对振动压路机机械有级调幅机构存在传动冲击、振幅调节精度差的弱点,提出电液无级调幅机构.详述了其组成结构和运行机理,通过运动学和动力学方程建立系统的数学模型.阐述了液压系统工作原理和电气控制流程.试验结果表明,电液无级调幅机构的稳态响应误差可控制在0.04 mm范围内,系统阶跃响应的过渡时间为1.9 s,超调基本为0.电液无级调幅机构在快速性、准确性和稳定性方面均可满足振动压路机的性能要求.
針對振動壓路機機械有級調幅機構存在傳動遲擊、振幅調節精度差的弱點,提齣電液無級調幅機構.詳述瞭其組成結構和運行機理,通過運動學和動力學方程建立繫統的數學模型.闡述瞭液壓繫統工作原理和電氣控製流程.試驗結果錶明,電液無級調幅機構的穩態響應誤差可控製在0.04 mm範圍內,繫統階躍響應的過渡時間為1.9 s,超調基本為0.電液無級調幅機構在快速性、準確性和穩定性方麵均可滿足振動壓路機的性能要求.
침대진동압로궤궤계유급조폭궤구존재전동충격、진폭조절정도차적약점,제출전액무급조폭궤구.상술료기조성결구화운행궤리,통과운동학화동역학방정건립계통적수학모형.천술료액압계통공작원리화전기공제류정.시험결과표명,전액무급조폭궤구적은태향응오차가공제재0.04 mm범위내,계통계약향응적과도시간위1.9 s,초조기본위0.전액무급조폭궤구재쾌속성、준학성화은정성방면균가만족진동압로궤적성능요구.
Aimed at the shortage of transmission impulse and poor precision of classical mechanical amplitude modulation structure of vibratory miler,an electric-hydraulic amplitude modulation systt'm was proposed.The structure and operation principle of the presented system were given out in detail.The mathematical model of the system was established based on the kinematical and dynamic equations.The hydraulic principle and electric control process were presented.The experimental result shows that the steady-state elTor of the electric-hydraulic stepless amplitude modulation structure is 0.04 mm.the overshoot is 0 and the transit time of step response is only 1.9 s.The repidity,accuracy and stability of the proposed structure could meet the requirements of vibratory roller.
