High-precision pendulous accelerometer
First Claim
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1. 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.
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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.
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Citations
21 Claims
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1. A quartz pendulous accelerometer, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A closed-loop control method for a quartz pendulous accelerometer, the method comprising:
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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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification