Title:
CURRENT CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/250916
Kind Code:
A1
Abstract:
A target setting unit (64) calculates an average target current (Irav) on the basis of a requested output oil pressure (Pr), and adds a dither amplitude (Ad) to the average target current (Irav), thereby setting a target current (Ir) so as to change periodically with a dither period (Td) that is longer than a PWM period (Tpwm). When fluctuation in the output oil pressure is detected a vibration-damping correction unit (67) corrects at least one specific setting item among the average target current (Irav), the dither amplitude (Ad), and the dither period (Td) to a value other than that of the target setting unit (64). During a restoration period (T2), which is in the middle of the operation of returning from the setting by means of the vibration-damping correction unit (67) to the setting by means of the target setting unit (64), a restoration correction unit (68) corrects the specific setting item to a value between the correction value from the vibration-damping correction unit (67) and the set value from the target setting unit (64).
Inventors:
SUZUKI FUMINORI (JP)
Application Number:
PCT/JP2020/022772
Publication Date:
December 17, 2020
Filing Date:
June 10, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16K31/06; H01F7/18
Foreign References:
| JP2019066028A | 2019-04-25 | |||
| JP2018195624A | 2018-12-06 | |||
| JPH10258625A | 1998-09-29 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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