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Title:
ELECTRIC-POWERED ACTUATOR AND ELECTRIC BRAKING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/196250
Kind Code:
A1
Abstract:
Provided are an electric-powered actuator (DA) and an electric braking device with which it is possible to effectively operate a reverse-input holding mechanism, and to reduce cost. A control device (2) for this electric-powered actuator comprises: a motor angle estimation means (22a); and a reverse-input holding control unit (24) that has a function in which the electric-powered actuator controls a solenoid (16) when a load is applied, whereby an engagement part (15) is caused to engage with an engaged part and a parking brake mechanism (7) is placed in a reverse-input holding state, and a function in which the engagement part (15) is caused to disengage from the engaged part and the parking brake mechanism (7) is switched from the reverse-input holding state to a reverse-input holding release state. The reverse-input holding control unit (24) has an engagement intermediate control function unit (24a) that controls an estimated rotation angle so that, when the engagement part (15) is caused to engage with the engaged part, and when the engagement part (15) is disengaged from the engaged part, the engaged part and the engagement part (15) reach a set positional relationship within a fixed period of time.

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Inventors:
MASUDA YUI (JP)
Application Number:
PCT/JP2020/012272
Publication Date:
October 01, 2020
Filing Date:
March 19, 2020
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16D65/18; B60T8/00; B60T13/74; F16D121/24; F16D127/06; F16D129/08
Domestic Patent References:
WO2016114235A12016-07-21
Foreign References:
JP2018086868A2018-06-07
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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