基于正交试验的反向随动比例阀频率响应特性优化OA
Optimization of Frequency Response Characteristics of Reverse Follow-up Proportional Valve Based on Orthogonal Test
针对反向随动比例阀存在的工作频宽不足、先导阀芯死区大及稳态控制精度低等问题,以反馈阀口关键结构参数(槽口深度、槽口长度、槽口角度)为优化对象,建立了反向随动比例阀的数学模型,分析了反馈阀口结构参数对系统转折频率及动态特性的影响规律,设计了三因素五水平的正交试验,以先导阀芯死区、位移比和过流面积梯度为评价指标,通过极差与方差分析明确各结构参数对性能指标的影响权重与显著性,结合 AMESim 动态仿真与样机试验,验证了优化方案的有效性.研究结果表明:优化后的反向随动比例阀位移比稳定在1.17 左右,先导阀芯死区降低了11.09％,有效工作频率由20 Hz 提升至35 Hz,启闭时间小于14 ms,显著改善了反向随动比例阀的动态响应特性.
To address the insufficient working frequency bandwidth,large pilot spool dead zone,and low steady-state control accuracy of a reverse follow-up proportional valve,we target three key structural parameters of the feedback valve port:notch depth,notch length,and notch angle.A mathematical model of the valve is established.The influence of these parameters on the system corner frequency and dynamic characteristics is analyzed.An orthogonal test with three factors and five levels is designed.The dead zone of the pilot spool,displacement ratio,and flow area gradient are used as evaluation indicators.Range and variance analysis determine the weight and significance of each structural parameter.The optimization scheme is validated by AMESim dynamic simulation and prototype tests.Results show that the optimized valve achieves a stable displacement ratio of about 1.17,an 11.09％reduction in pilot spool dead zone,an effective working frequency increased from 20 Hz to 35 Hz,and an opening/closing time below 14 ms,significantly improving the dynamic response characteristics of the reverse follow-up proportional valve.
周宇恒;闵为;王佳敏;连杰
兰州理工大学 能源与动力工程学院,甘肃 兰州 730050||特种泵阀及流控系统教育部重点实验室,甘肃 兰州 730050兰州理工大学 能源与动力工程学院,甘肃 兰州 730050||特种泵阀及流控系统教育部重点实验室,甘肃 兰州 730050兰州理工大学 能源与动力工程学院,甘肃 兰州 730050||特种泵阀及流控系统教育部重点实验室,甘肃 兰州 730050兰州理工大学 能源与动力工程学院,甘肃 兰州 730050||特种泵阀及流控系统教育部重点实验室,甘肃 兰州 730050
机械制造
反向随动比例阀正交试验频率响应反馈阀口
reverse follow-up proportional valveorthogonal testfrequency responsefeedback valve port
《液压与气动》 2026 (6)
40-51,12
国家自然科学基金(52165007)
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