| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique determining disconnection of a signal line connected to a WT type vibrator in an angular velocity detecting device having the WT type vibrator. <P>SOLUTION: This angular velocity detecting device includes: the vibrator; a drive circuit that drives the vibrator so as to allow the vibrator to perform excitation vibration; and two signal lines that are electrically connected to the vibrator so as to take out two first detection signals having opposite phases from the vibrator. The angular velocity detecting device further includes a detection circuit that differentially amplifies the two first detection signals from the two signal lines so as to generate a second detection signal based on the two first detection signals, respectively extracts an angular velocity component based on a Coriolis force and a self vibration component based on the excitation vibration from the generated second detection signal, and outputs the extracted self vibration component to a malfunction determination circuit at the successive stage. Balance tuning for setting a magnitude of the self vibration component output from the detection circuit by shifting it from zero is applied to the vibrator. <P>COPYRIGHT: (C)2010,JPO&INPIT |
