Drift-compensated inertial rotation sensor
View Patent ↗An inertial rotation sensor including a vibrating member having facing metal-plated portions forming a variable capacitance capacitor associated with a low impedance load circuit via a multiplexer/demultiplexer member.
1. An inertial rotation sensor, comprising:
a vibrating member having facing metal-plated portions forming a variable capacitance capacitor;
a multiplexer/demultiplexer member connected to said variable capacitance capacitor; and
a load circuit connected to said multiplexor/demultiplexer member, wherein the load circuit is a low impedance load circuit.
2. An inertial rotation sensor according to claim 1 , wherein the load circuit comprises:
an amplifier with a gain G; and
a looping resistance R,
such that R/G<<1/(Cω 0 ),
where C is the capacitance of the capacitor and ω 0 is an angular frequency of the vibrating member vibrating at a resonance frequency of the sensor.