Hydraulic controller and control method with pressure and oil-condition sensing and failure
US7715967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Mar 7, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.