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1. 发明授权

US5426970A Rotation rate sensor with built in test circuit 失效
标题翻译：旋转速率传感器内置测试电路
公开(公告)号：US5426970A
公开(公告)日：1995-06-27
申请号：US100759
申请日：1993-08-02
申请人： Alvin V. Florida , Piyush K. Gupta , David F. Macy , Harold D. Morris
发明人： Alvin V. Florida , Piyush K. Gupta , David F. Macy , Harold D. Morris
IPC分类号： G01C19/02 , G01C19/56 , G01C19/5607 , G01P9/04 , G01P21/00 , G01P15/09 , H01L41/107
CPC分类号： G01C19/5607 , G01P21/00
摘要： A rotation rate sensor which employs a built-in (i.e. internal) test circuit. The rotation rate sensor includes a piezoelectric structure. Deposited on the piezoelectric structure are at least two pickup high and two pickup low electrodes. A pickup circuit is coupled to the pickup high and pickup low electrodes. During a normal mode of operation, the piezoelectric structure is subject to a rotation about one of its axis. In response, the pickup circuit generates a rate signal which corresponds to the rotation rate of the piezoelectric structure. The test circuit is coupled to the pickup low electrodes. During a test mode of operation, the piezoelectric structure is also subject to a rotation about the axis. But, the test circuit generates at the same time a test signal which is provided to the pickup low electrodes and which corresponds to a pseudo rate of rotation. In response, the pickup circuit generates a rate signal which corresponds to the sum of the actual rate of rotation of the piezoelectric material plus the pseudo rate of rotation.
摘要翻译：采用内置（即内部）测试电路的旋转速率传感器。旋转速率传感器包括压电结构。沉积在压电结构上的是至少两个拾取高和两个拾取低电极。拾取电路耦合到拾取器高和拾取低电极。在正常操作模式期间，压电结构经受其轴线之一的旋转。作为响应，拾取电路产生对应于压电结构的旋转速率的速率信号。测试电路耦合到拾取器低电极。在测试操作模式期间，压电结构也绕轴线旋转。但是，测试电路同时产生提供给拾取低电极并且对应于伪旋转速率的测试信号。作为响应，拾取电路产生对应于压电材料的实际转速与伪旋转速率之和的速率信号。

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