COMBINED ACCELEROMETER AND GYROSCOPE SYSTEM
First Claim
1. A combined accelerometer and gyroscope system, wherein:
- vibration is applied to a driving axis of a gyroscope using vibration in a direction of an acceleration axis of a mass body;
input acceleration is detected using an amplitude control signal, corresponding to the vibration in the direction of the acceleration axis, at a time of inputting an acceleration; and
Coriolis force, generated in a direction of an angular velocity axis due to the vibration of the driving axis of the gyroscope, is detected at a time of inputting an angular velocity.
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Accused Products
Abstract
An embodiment of the present invention relates to a combined accelerometer and gyroscope system. The combined accelerometer and gyroscope system includes a combined accelerometer and gyroscope for maintaining vibration of a mass body at a constant amplitude using an applied drive voltage, and detecting vibration signals in directions of an acceleration axis and an angular velocity axis. An acceleration axis vibration signal obtainment unit obtains the vibration signal in the direction of the acceleration axis. An amplitude maintenance control unit outputs an acceleration axis vibration maintenance control signal using the vibration signal. An acceleration axis driving input unit receives a voltage signal from the amplitude maintenance control unit and applies the voltage signal to the combined accelerometer and gyroscope. An angular velocity axis vibration signal obtainment unit obtains the vibration signal in the direction of the angular velocity axis. A force balance control unit outputs an angular velocity axis vibration maintenance control signal using the vibration signal received from the angular velocity axis vibration signal obtainment unit. An angular velocity axis driving input unit receives a voltage signal received from the force balance control unit and applies the voltage signal to the combined accelerometer and gyroscope.
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Citations
8 Claims
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1. A combined accelerometer and gyroscope system, wherein:
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vibration is applied to a driving axis of a gyroscope using vibration in a direction of an acceleration axis of a mass body; input acceleration is detected using an amplitude control signal, corresponding to the vibration in the direction of the acceleration axis, at a time of inputting an acceleration; and Coriolis force, generated in a direction of an angular velocity axis due to the vibration of the driving axis of the gyroscope, is detected at a time of inputting an angular velocity.
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2. A combined accelerometer and gyroscope system, comprising:
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a combined accelerometer and gyroscope for maintaining vibration of a mass body at a constant amplitude using an applied drive voltage, and detecting vibration signals in directions of an acceleration axis and an angular velocity axis; an acceleration axis vibration signal obtainment unit for obtaining the vibration signal in the direction of the acceleration axis detected by the combined accelerometer and gyroscope; an amplitude maintenance control unit for outputting an acceleration axis vibration maintenance control signal, required to obtain a constant vibration amplitude, using the vibration signal received from the acceleration axis vibration signal obtainment unit; an acceleration axis driving input unit for receiving a voltage signal from the amplitude maintenance control unit and applying the voltage signal to the combined accelerometer and gyroscope; an angular velocity axis vibration signal obtainment unit for obtaining the vibration signal in the direction of the angular velocity axis detected by the combined accelerometer and gyroscope; a force balance control unit for outputting an angular velocity axis vibration maintenance control signal, which is required to have a constant vibration amplitude, using the vibration signal received from the angular velocity axis vibration signal obtainment unit; and an angular velocity axis driving input unit for receiving a voltage signal from the force balance control unit and applying the voltage signal to the combined accelerometer and gyroscope. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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Specification