Abstract: An accelerator comprises: an accelerometer (100), configured to detect an acceleration of a motion of a carrier and output a corresponding electrical signal; a sampling and low-pass filter (200), coupled to the accelerometer (100), and configured to sample the electrical signal regularly and filter a noise from the electrical signal; an amplifier (300), configured to amplify the electrical signal after filtering the noise; an analog-to-digital converter (400), configured to convert the amplified electrical signal into a digital signal; a function control module (500), configured to process the digital signal and output a control signal to control the analog-to-digital converter (400), the amplifier (300), and the sampling and low-pass filter (200); and an oscillator module (600), configured to output, according to the control signal, a sampling signal to the sampling and low-pass filter (200), so as to control the sampling and low-pass filter (200) to sample the electrical signal regularly.

Abstract: A method for correcting the driving amplitude of a gyro sensor, mainly comprises adjusting the size of a driving signal (a preset amplitude value) through feedback of a sensor response amplitude signal (an average amplitude value) in a resonance maintaining time period, so that the response amplitude of the resonance maintaining time period tends to be equal, and a stable resonance amplitude is maintained. Also provided is a system for correcting the driving amplitude of a gyro sensor.

Abstract: A method for correcting the driving amplitude of a gyro sensor, mainly comprises adjusting the size of a driving signal (a preset amplitude value) through feedback of a sensor response amplitude signal (an average amplitude value) in a resonance maintaining time period, so that the response amplitude of the resonance maintaining time period tends to he equal, and a stable resonance amplitude is maintained. Also provided is a system for correcting the driving amplitude of a gyro sensor.

Abstract: A method for correcting the driving amplitude of a gyro sensor, mainly comprises adjusting the size of a driving signal (a preset amplitude value) through feedback of a sensor response amplitude signal (an average amplitude value) in a resonance maintaining time period, so that the response amplitude of the resonance maintaining time period tends to be equal, and a stable resonance amplitude is maintained. Also provided is a system for correcting the driving amplitude of a gyro sensor.

Abstract: An accelerator comprises: an accelerometer (100), configured to detect an acceleration of a motion of a carrier and output a corresponding electrical signal; a sampling and low-pass filter (200), coupled to the accelerometer (100), and configured to sample the electrical signal regularly and filter a noise from the electrical signal; an amplifier (300), configured to amplify the electrical signal after filtering the noise; an analog-to-digital converter (400), configured to convert the amplified electrical signal into a digital signal; a function control module (500), configured to process the digital signal and output a control signal to control the analog-to-digital converter (400), the amplifier (300), and the sampling and low-pass filter (200); and an oscillator module (600), configured to output, according to the control signal, a sampling signal to the sampling and low-pass filter (200), so as to control the sampling and low-pass filter (200) to sample the electrical signal regularly.

Abstract: A direct digital frequency synthesis method comprises the following steps: calculating, by a phase accumulation module, a first phase according to a frequency synthesis word (S101); finding an amplitude value by a preset sinusoidal lookup table according to the first phase (S102); finding a second phase by a preset phase lookup table according to the amplitude value (S103); if the second phase is less than the first phase, adjusting and outputting the amplitude value (S105); or else, outputting the original amplitude value (S106); and performing, by a digital-to-analog converter, a digital-to-analog conversion according to the output amplitude value to obtain a sinusoidal wave (S107); wherein, for a N-bit phase accumulation module and a D-bit digital-to-analog converter, the preset phase lookup table has 2D?1-1 phase boundary value records corresponding to 0˜2D?1-2 amplitudes, each phase boundary value is stored in N-2 bits. A direct digital frequency synthesizer applying the above method is also disclosed.

Abstract: A direct digital frequency synthesis method comprises the following steps: calculating, by a phase accumulation module, a first phase according to a frequency synthesis word (S101); finding an amplitude value by a preset sinusoidal lookup table according to the first phase (S102); finding a second phase by a preset phase lookup table according to the amplitude value (S103); if the second phase is less than the first phase, adjusting and outputting the amplitude value (S105); or else, outputting the original amplitude value (S106); and performing, by a digital-to-analog converter, a digital-to-analog conversion according to the output amplitude value to obtain a sinusoidal wave (S107); wherein, for a N-bit phase accumulation module and a D-bit digital-to-analog converter, the preset phase lookup table has 2D?1-1 phase boundary value records corresponding to 0˜2D?1-2 amplitudes, each phase boundary value is stored in N-2 bits. A direct digital frequency synthesizer applying the above method is also disclosed.

Abstract: A method for correcting the driving amplitude of a gyro sensor, mainly comprises adjusting the size of a driving signal (a preset amplitude value) through feedback of a sensor response amplitude signal (an average amplitude value) in a resonance maintaining time period, so that the response amplitude of the resonance maintaining time period tends to be equal, and a stable resonance amplitude is maintained. Also provided is a system for correcting the driving amplitude of a gyro sensor.