高速开关阀自适应可调双电压控制器性能研究  

Performance Study of Adaptive Adjustable Dual-voltage Controller for High Speed On/Off Valve

作　　者：刘骅毅 阮韵秋 高强[1] 周会鹏 朱勇[1] 牛明洋 LIU Huayi;RUAN Yunqiu;GAO Qiang;ZHOU Huipeng;ZHU Yong;NIU Mingyang(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013;Shanghai Guorui Hydraulic Technology Co.,Ltd.,Shanghai 200080;Jiangsu Guorui Hydraulic Machinery Co.,Ltd.,Yancheng,Jiangsu 224700)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]上海国瑞液压科技有限公司,上海200080 [3]江苏国瑞液压机械有限公司,江苏盐城224700

出　　处：《液压与气动》2024年第11期101-110,共10页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金青年科学基金(52205058);江苏省高等学校自然科学研究面上项目(22KJB460017)。

摘　　要：针对目前高速开关阀控制器存在驱动电压幅值不可调、驱动电压不稳定、体积大等问题,提出一种自适应可调双电压控制器。首先,为了降低控制器输入电压波动对输出驱动电压精度的影响,提出一种融合低压差线性稳压技术和电压闭环的稳压方法,将输出电压稳态误差控制在0.1 V以内。其次,通过实验辨识法研究供油压力与临界启闭电压的动态映射关系,以获取自适应系数,并将其作为电压控制脉冲宽度调制占空比,进一步借助低通滤波技术实现自适应电压的平均值输出。最后,采用双稳态并联降压电路和双面电路拓扑优化方法,来缩小控制器体积尺寸,并实现散热效率最大化。结果表明,自适应可调双电压控制器可以同时驱动四个高速开关阀,且工作频率达到100 Hz以上,线性占空比区间为0.3~0.7,具有高动态、低功耗、强扩展性等优势。An adaptive adjustable dual-voltage controller is proposed to address the current issues of non adjustable driving voltage amplitude,unstable driving voltage,and large volume size in high speed on/off valve controllers.Firstly,to reduce the impact of input voltage's fluctuations of the controller on the accuracy of the output driving voltage,a voltage stabilization method combining the low drop-out linear voltage regulating technology and the built-in voltage closed-loop is proposed,which makes the steady-state error of the output voltage within 0.1 V.Secondly,the dynamic mapping function between the oil supply pressure and the critical opening/closing voltage is obtained through experimental identification to obtain the adaptive coefficient,which is used as the pulse width modulation duty cycle of the control voltage.Furthermore,low-pass filtering technology is used to achieve the average output of the adaptive voltage.Finally,a bistable parallel buck circuit and a double-sided circuit topology optimization method are adopted to reduce the volume size of the controller and achieve the maximum efficiency of heat dissipation.The results indicate that the developed adaptive adjustable dual-voltage controller can simultaneously achieve the operation of four high speed on/off valves above 100 Hz,with a linear duty cycle range of 0.3~0.7.Therefore,the proposed adaptive adjustable dual-voltage controller has the advantages of high dynamic performance,low power consumption,and strong scalability.

关 键 词：高速开关阀 可调双电压 稳压方法 有效占空比 动态性能 

分 类 号：TH137[机械工程—机械制造及自动化]