Title:
VIBRATION RECTIFICATION ERROR CORRECTION DEVICE, SENSOR MODULE, AND VIBRATION RECTIFICATION ERROR CORRECTION METHOD
Document Type and Number:
Japanese Patent JP2022104345
Kind Code:
A
Abstract:
To provide a vibration rectification error correction device that can correct a vibration rectification error while fixing a group delay amount.SOLUTION: A vibration rectification error correction device comprises: a reference signal generation circuit that outputs a reference signal; a first frequency delta-sigma modulation circuit that performs frequency delta-sigma modulation on the reference signal by using a first measured signal to generate a first frequency delta-sigma modulated signal; a first filter; a second filter that operates in synchronization with the reference signal; and a first timing control circuit that generates a first timing signal obtained by delaying the first measured signal on the basis of, a count value of the number of pulses of the reference signal and controls timing to output an input signal in synchronization with the first timing signal. The first filter and the first timing control circuit are provided on a signal path from output of the first frequency delta-sigma modulation circuit to input of the second filter.SELECTED DRAWING: Figure 22
Inventors:
GOHARA MASAYOSHI
Application Number:
JP2020219505A
Publication Date:
July 08, 2022
Filing Date:
December 28, 2020
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G01P21/00; G01P15/10; G01P15/18
Attorney, Agent or Firm:
Fuse Yukio
Michie Obuchi
川▲崎▼ 通
Mitsufumi Matsumoto
Michie Obuchi
川▲崎▼ 通
Mitsufumi Matsumoto