Invention Grant
- Patent Title: Hydraulic pressure control apparatus
- Patent Title (中): 液压控制装置
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Application No.: US13280893Application Date: 2011-10-25
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Publication No.: US09014862B2Publication Date: 2015-04-21
- Inventor: Yoshio Morita , Takayuki Nagase , Takaaki Matsui
- Applicant: Yoshio Morita , Takayuki Nagase , Takaaki Matsui
- Applicant Address: JP Fuji-shi JP Yokohama-shi
- Assignee: Jatco Ltd,Nissan Motor Co., Ltd.
- Current Assignee: Jatco Ltd,Nissan Motor Co., Ltd.
- Current Assignee Address: JP Fuji-shi JP Yokohama-shi
- Agency: Foley & Lardner LLP
- Priority: JP2010-242142 20101028
- Main IPC: G05D9/00
- IPC: G05D9/00 ; F15B21/08 ; F15B19/00 ; F16D48/06 ; F16H61/02 ; F16D48/02

Abstract:
A hydraulic pressure control apparatus includes a solenoid valve; a hysteresis hydraulic pressure correction amount calculation section calculating a hysteresis hydraulic pressure correction amount and a command current control section controlling the command current in accordance with the hysteresis hydraulic pressure correction amount. The hysteresis hydraulic pressure correction amount calculation section has, as a reference map, a full hysteresis characteristic, and is configured to make a plurality of reduction maps obtained by reducing the reference map in accordance with a turn-round position at one of minor loops from a past to a present time when the minor loop continues, and to calculate the hysteresis hydraulic pressure correction amount by summation of hysteresis hydraulic pressure correction amounts obtained by the reduction maps in the same command current position.
Public/Granted literature
- US20120109385A1 HYDRAULIC PRESSURE CONTROL APPARATUS Public/Granted day:2012-05-03
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