Title:
SPEED DETECTION CIRCUIT AND DRIVE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/064690
Kind Code:
A1
Abstract:
Provided is a speed detection circuit capable of detecting a speed without a speed detection sensor. The speed detection circuit is provided with a control circuit. The control circuit outputs a speed detection signal obtained by adding a component in a band equal to or less than a prescribed cutoff frequency of the signal obtained by differentiating an output signal of a position detection sensor to a component in a band equal to or more than the cutoff frequency of the signal obtained by integrating an output signal of an acceleration detection sensor.
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Inventors:
NORO MASAO (JP)
Application Number:
PCT/JP2018/019948
Publication Date:
April 04, 2019
Filing Date:
May 24, 2018
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
H04R3/04; H04R9/04
Foreign References:
| JP2014138226A | 2014-07-28 | |||
| JP2005223385A | 2005-08-18 |
Attorney, Agent or Firm:
TACHIBANA, Kenji et al. (JP)
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