发明名称 |
Vibratory rotation sensor |
摘要 |
<p>The invention is a vibratory rotation sensor comprising a resonator and a housing to which the resonator is attached and a method for reading out the standing-wave orientation angle utilizing a tracking angle which is maintained equal to the orientation angle on average. The resonator is a rotationally-symmetric thin-walled object that can be made to vibrate in a plurality of standing-wave modes. The method includes applying driving voltages to housing electrodes and determining the orientation of a standing wave by performing operations on the resonator signal that arrives at a single resonator output port from one or more electrodes in close proximity to the housing electrodes. A driving voltage may include either a pair of excitation voltages or a forcing voltage or both. An excitation voltage has essentially no effect on the resonator dynamics but carries information pertaining to the tracking angle and the standing-wave parameters when it arrives at the resonator output port. A forcing voltage causes forces to be applied to the resonator and thereby affects the dynamics of the resonator and the standing-wave parameters. The driving voltages applied to the housing electrodes are brought together into a single resonator signal as a result of being transmitted through the housing-electrode-resonator-electrode capacitances to the resonator output port. In order to extract the standing-wave orientation angle, the excitation and forcing voltages are designed to be separable by appropriate operations performed on the resonator signal. <IMAGE></p> |
申请公布号 |
EP0859217(A2) |
申请公布日期 |
1998.08.19 |
申请号 |
EP19980101479 |
申请日期 |
1998.01.28 |
申请人 |
LITTON SYSTEMS, INC. |
发明人 |
MATTHEWS, ANTHONY;VARTY, GUY THOMAS;LI, CHUNG-MING;LYNCH, DAVID DEXTER |
分类号 |
G01P3/44;G01B7/30;G01C19/5691;G01D5/243;(IPC1-7):G01C19/56 |
主分类号 |
G01P3/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|