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US 5,969,248 AGranted
Oscillation type angular velocity sensor
AssigneeAisin Seiki Kabushiki Kaisha
InventorsHideya Kurachi, Takayoshi Tsuzuki
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Abstract
An oscillation type angular velocity sensor includes an oscillator, as exciting device for exciting the oscillator, a detecting device for detecting the direction of oscillation of the oscillator which occurs by a Coriolis force acting on the oscillator when an angular velocity is applied thereto and a correction device adhered to a portion of the oscillator for correcting the direction of the oscillation of the oscillator by varying the elasticity of the portion of the oscillator.
Claims10
An oscillation type angular velocity sensor comprising:
- an oscillator;
- exciting means for exciting the oscillator;
- detecting means for detecting a direction of oscillation of the oscillator which occurs by a Coriolis force acting on the oscillator when an angular velocity is applied thereto;
- correction means adhered to a portion of the oscillator for correcting the direction of the oscillation of the oscillator by varying an apparent elasticity of the portion of the oscillator;
- and
- wherein the correction means includes a piezoelectric ceramic plate adhered to the oscillator, a correcting electrode provided on the piezoelectric ceramic plate and a resistor connected to the correcting electrode for discharging electric charges induced thereon and constituting a combination with the electrode.
3 more elements
An oscillation type angular velocity sensor comprising:
- an oscillator formed of piezoelectric ceramic material;
- exciting means for exciting the oscillator;
- detecting means for detecting a direction of oscillation of the oscillator which occurs by a Coriolis force action on the oscillator when an angular velocity is applied thereto;
- wherein the correction means includes a correcting electrode provided on the oscillator, and a resistor connected to the correcting electrode for discharging electric charges induced thereon and constituting a combination with the correcting electrode.
1 more element
Dependencies are inferred from the claim text.