公开(公告)号：US5850041A

公开(公告)日：1998-12-15

申请号：US821785

申请日：1997-03-21

申请人： Lalit Kumar ,  Michael J. Foster ,  Thomas A. Bittner

发明人： Lalit Kumar ,  Michael J. Foster ,  Thomas A. Bittner

IPC分类号： G01P3/48 ,  G01C19/567 ,  G01C19/00 ,  G01P9/00

CPC分类号： G01C19/567 ,  G01C19/5691

摘要： The invention is a method and apparatus for controlling the vibration modes of a vibratory rotation sensor (VRS) comprising a resonator and a housing which together serve as the ground potential reference. The resonator has a surface with a conductive region and the housing has a plurality of attached electrodes positioned opposing the conductive region on the resonator. The parameters of the resonator standing-wave vibration pattern are determined by feeding an ac sensing signal to the conducting region on the resonator and obtaining one or more vibration signals while the electric potential of the conductive region on the resonator is maintained within 100 millivolts of ground. Each vibration signal is a replica of the ac sensing signal with amplitude modulation which is a periodic function of the distance from a point in the conducting region of the surface of the resonator to an opposing housing electrode. The frequency of the amplitude modulation is the vibration frequency of the resonator. The parameters of the standing wave are determined from the vibration signals, and these parameters are used in controlling the standing-wave parameters by generating appropriate ac forcing voltages which are applied to the housing electrodes.

摘要翻译： 本发明是一种用于控制振动旋转传感器（VRS）的振动模式的方法和装置，该振动旋转传感器（VRS）包括共振器和外壳，它们共同作为地电位基准。 谐振器具有带有导电区域的表面，并且壳体具有多个附着的电极，该电极与谐振器上的导电区域相对定位。 谐振器驻波振动模式的参数通过将馈电感测信号馈送到谐振器上的导电区域并获得一个或多个振动信号来确定，同时谐振器上的导电区域的电位保持在100毫伏的地面 。 每个振动信号是具有幅度调制的交流感测信号的副本，其是从谐振器的表面的导电区域中的点到相对的壳体电极的距离的周期函数。 振幅调制的频率是谐振器的振动频率。 由振动信号确定驻波的参数，并通过产生施加到壳体电极的合适的交流强制电压来将这些参数用于控制驻波参数。