会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Servovalve drive electronics improvements
    • 伺服阀驱动电子改进
    • US4679591A
    • 1987-07-14
    • US840402
    • 1986-03-17
    • Dale N. MaueRichard A. Lund
    • Dale N. MaueRichard A. Lund
    • G01M7/02F15B9/09F15B13/044G05B19/19
    • G05B19/19G05B2219/37133G05B2219/41156G05B2219/41203G05B2219/41278G05B2219/41309G05B2219/41423G05B2219/42032G05B2219/42033Y10T137/86405Y10T137/86622
    • The present invention provides a circuit for obtaining higher accuracy and total system response for complex mechanical impedance loads, such as earthquake simulators, and in particular to compensate for limitations in controlling the actual valve spool displacement and adequately stabilizing and controlling it at high frequencies. The improvement circuit includes a state variable filter to extend the band width of servovalve actuation frequencies by adding a lead compensation signal compensating for servovalve hydraulic responses. The output of the first filter circuit then in turn feeds a summing junction where the spool displacement feedback is provided, and the output of the summing junction or circuit is provided with the output from an additional filter which cleans up the signal by filtering out noise and insures that the phase of stabilizing signals is proper. The final input signal that is then fed into a unique drive system utlizing two amplifiers connected as current pumps to independently drive the electrical motor coils that in turn drive the valve spool to insure adequate current for driving the spool in opposite directions at high frequencies.
    • 本发明提供了一种用于为诸如地震模拟器的复杂机械阻抗负载获得更高精度和总系统响应的电路,并且特别地用于补偿控制实际阀芯位移并在高频下充分稳定和控制它的限制。 改进电路包括状态变量滤波器,通过增加补偿伺服阀液压响应的引导补偿信号来扩展伺服阀驱动频率的带宽。 第一滤波器电路的输出然后进给馈线,其中提供线轴位移反馈,并且求和结或电路的输出提供有来自附加滤波器的输出,滤波器滤除掉噪声并清除信号, 确保稳定信号的相位是正确的。 最后的输入信号然后被馈送到独特的驱动系统中,利用连接成当前泵的两个放大器来独立地驱动电动机线圈,该电动机线圈又驱动阀芯以确保足够的电流以在高频下以相反的方向驱动线轴。