Invention Grant
- Patent Title: Hydraulic controller and control method with pressure and oil-condition sensing and failure
- Patent Title (中): 液压控制器及压力和油位检测与故障控制方法
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Application No.: US11148163Application Date: 2005-06-09
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Publication No.: US07715967B2Publication Date: 2010-05-11
- Inventor: Jonggap Kim , Yasushi Yabe , Seiichiro Takahashi
- Applicant: Jonggap Kim , Yasushi Yabe , Seiichiro Takahashi
- Applicant Address: JP Fuji-shi
- Assignee: JATCO Ltd
- Current Assignee: JATCO Ltd
- Current Assignee Address: JP Fuji-shi
- Agency: Foley & Lardner LLP
- Priority: JP2004-172385 20040610
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F17/00

Abstract:
A hydraulic controller includes an actuator for electrically controlling the hydraulic pressure, a hydraulic-pressure sensing part for sensing an actual value of the hydraulic pressure in the actuator, and an ECU for controlling the actuator. The ECU includes a fundamental hydraulic-pressure value command part for carrying out setting and command of a fundamental hydraulic-pressure command value, a feedforward control part for calculating through an inverse filter a first target hydraulic-pressure command value in accordance with the fundamental hydraulic-pressure command value, a feedback control part for calculating a second target hydraulic-pressure command value in accordance with the sensed actual value of the hydraulic pressure and the fundamental hydraulic-pressure command value, and a target control-amount determination part for determining a target control amount of the actuator in accordance with the first and second target hydraulic-pressure command value, wherein the ECU controls the actuator in accordance with the determined target control amount.
Public/Granted literature
- US20050278102A1 Hydraulic controller and method of controlling same Public/Granted day:2005-12-15
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