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1.发明授权Hydraulic cylinder piston position sensing with compensation for piston velocity 失效液压缸活塞位置检测，补偿活塞速度
公开(公告)号：US5710514A
公开(公告)日：1998-01-20
申请号：US437594
申请日：1995-05-09
CPC分类号： F15B15/2869 , F15B15/28 , G01D3/022 , G01D5/48
摘要： A piston position sensing system in which tabulated resonance width related information is stored in a form correlated with piston travel so that measured resonance width information can be compared with the stored information in determining piston position and compensation for the velocity of the piston is provided by correction for a time difference in serial sensing between the initial and the following extremes of a resonance signal as the piston moves. the compensation is developed from velocity information identified through previous and current processing cycles which assures reliability in detection of the subsequently sensed portion of the resonance signal envelope and enhanced sensitivity and accuracy through automatic application incrementally in a dynamic gain adjustment of the sensing system.
摘要翻译： 一种活塞位置检测系统，其中列表的共振宽度相关信息以与活塞行程相关的形式存储，使得测量的共振宽度信息可以与确定活塞位置的存储信息进行比较，并且通过校正来提供补偿 用于当活塞移动时在共振信号的初始和以后极限之间的串行感测的时间差。 从通过先前和当前处理循环识别的速度信息产生补偿，其通过在感测系统的动态增益调整中逐渐自动应用来确保检测到谐振信号包络的后续感测部分的可靠性以及增强的灵敏度和精度。
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2.发明授权
公开(公告)号：US5608332A
公开(公告)日：1997-03-04
申请号：US437611
申请日：1995-05-09
CPC分类号： F15B15/2869 , F15B15/28 , G01D3/022 , G01D5/48
摘要： Dynamic gain adjustment in hydraulic piston position sensing that continuously accommodates for changes in signal level is provided by attenuating the gain of the sensing system through a comparison of a measured value with a stored value at each piston position.
摘要翻译： 通过将测量值与每个活塞位置的存储值进行比较来衰减感测系统的增益，可以提供连续适应信号电平变化的液压活塞位置检测中的动态增益调节。
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