Combined accelerometer and gyroscope system
First Claim
1. A combined accelerometer and gyroscope system, comprising:
- a combined accelerometer and gyroscope that maintains vibration of a mass body at a constant amplitude using an applied drive voltage, and that detects vibration signals in directions of an acceleration axis and an angular velocity axis;
an acceleration axis vibration signal obtainment unit that obtains the vibration signal in the direction of the acceleration axis detected by the combined accelerometer and gyroscope;
an amplitude maintenance control unit that outputs 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 that 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 that obtains the vibration signal in the direction of the angular velocity axis detected by the combined accelerometer and gyroscope;
a force balance control unit that outputs 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 that receives a voltage signal from the force balance control unit and applies the voltage signal to the combined accelerometer and gyroscope.
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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.
49 Citations
7 Claims
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1. A combined accelerometer and gyroscope system, comprising:
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a combined accelerometer and gyroscope that maintains vibration of a mass body at a constant amplitude using an applied drive voltage, and that detects vibration signals in directions of an acceleration axis and an angular velocity axis; an acceleration axis vibration signal obtainment unit that obtains the vibration signal in the direction of the acceleration axis detected by the combined accelerometer and gyroscope; an amplitude maintenance control unit that outputs 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 that 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 that obtains the vibration signal in the direction of the angular velocity axis detected by the combined accelerometer and gyroscope; a force balance control unit that outputs 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 that receives a voltage signal from the force balance control unit and applies the voltage signal to the combined accelerometer and gyroscope. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification