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DRIVE CIRCUIT FOR ESTIMATING FLUID FLOW BASED ON VALVE CLOSURE TIME AND FLUID APPLICATION SYSTEM INCLUDING SAME
DRIVE CIRCUIT FOR ESTIMATING FLUID FLOW BASED ON VALVE CLOSURE TIME AND FLUID APPLICATION SYSTEM INCLUDING SAME
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机译:用于估计基于阀门闭合时间和流体应用系统的流体流动的驱动电路
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摘要
A drive circuit for a solenoid valve having a coil and a poppet configured to translate within the coil includes a drive switch operable to de-energize the coil to translate the poppet toward a closed position, a sensor configured to detect the poppet translating within the solenoid valve, and a drive circuit configured to energize and de-energize the coil of the solenoid valve to translate the poppet of the solenoid valve between an open position and a closed position. The drive circuit includes a controller configured to receive a closure signal from the sensor, determine a closing time of the solenoid valve based on the closure signal, determine a time delay between de-energizing the coil and the determined closing time, and determine a fluid flow value of fluid flowing through the solenoid valve based on the determined time delay.
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