High-precision pendulous accelerometer
AssigneeInstitute of Geology and Geophysics, Chinese Academy of Sciences
InventorXu Xue
Life of this patent
Estimating the term…
Abstract
Provided is a quartz pendulous accelerometer including a quartz meter configured to sense an acceleration signal, convert the acceleration signal into an inertia torque, and convert the inertia torque into a quartz meter output signal; a readout apparatus configured to convert the meter output signal into an input signal recognizable by a pulse generating apparatus; and a pulse generating apparatus configured to perform control algorithm conversion, oversampling and digital quantization on the input signal to obtain a quantized current pulse, which is converted into an electromagnetic pulse torque for balancing the inertia torque.
Claims21
A quartz pendulous accelerometer, comprising:
- a quartz meter, which is configured to sense an acceleration signal, and convert the acceleration signal into an inertia torque and convert the inertia torque into a meter output signal;
- a capacitance-to-voltage (C-V) readout circuit, which is configured to convert the meter output signal into an input signal recognizable by a pulse generating apparatus;
- and
- the pulse generating apparatus, which is configured to perform control algorithm conversion, oversampling and digital quantization on the input signal to obtain a quantized current pulse,
- wherein the quantized current pulse is an oversampled modulated signal comprising information about a magnitude and a polarity of a feedback force and is converted into an electromagnetic pulse torque for balancing the inertia torque.
A closed-loop control method for a quartz pendulous accelerometer, the method comprising:
- providing a quartz meter, which is configured to sense an acceleration signal, and convert the acceleration signal into an inertia torque and convert the inertia torque into a meter output signal;
- converting, using a capacitance-to-voltage (C-V) readout circuit, the meter output signal into an input signal recognizable by a pulse generating apparatus and inputting the input signal to the pulse generating apparatus;
- and
- performing control algorithm conversion, oversampling and digital quantization on the input signal to obtain a quantized current pulse,
- wherein the quantized current pulse is an oversampled modulated signal comprising information about a magnitude and a polarity of a feedback force and is converted into an electromagnetic pulse torque for balancing the inertia torque.
Dependencies are inferred from the claim text.