Hydraulic controller and control method with pressure and oil-condition sensing and failure
First Claim
1. A hydraulic controller, comprising:
- an actuator configured to electrically control a hydraulic pressure;
a hydraulic-pressure sensing part configured to sense an actual value of the hydraulic pressure in the actuator;
an oil-conditioning sensing part configured to sense an actual condition of oil; and
an electronic control unit (ECU) configured to control the actuator, the ECU comprising;
a fundamental hydraulic-pressure value command part configured to carry out setting and command of a fundamental hydraulic-pressure command value;
a feedforward control part configured to calculate through an inverse filter a first target hydraulic-pressure command value in accordance with the fundamental hydraulic-pressure command value;
a feedback control part configured to calculate 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;
a target control-amount determination part configured to determine a target control amount of the actuator in accordance with the first and second target hydraulic-pressure command values; and
a first failure detection part configured to detect a failure of the hydraulic-pressure sensing part,wherein the feedforward control part comprises a plurality of inverse filters corresponding to the sensed actual condition of oil,wherein when the failure of the hydraulic-pressure sensing part is detected, the feedforward control part is configured to select from the plurality of inverse filters an inverse filter corresponding to the sensed actual condition of oil so as to carry out feedforward control,wherein when the failure of the hydraulic-pressure sensing part is detected, the target control amount is determined by the calculated first target hydraulic-pressure command value only, andwherein the ECU is configured to control the actuator in accordance with the determined target control amount.
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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.
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Citations
11 Claims
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1. A hydraulic controller, comprising:
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an actuator configured to electrically control a hydraulic pressure; a hydraulic-pressure sensing part configured to sense an actual value of the hydraulic pressure in the actuator; an oil-conditioning sensing part configured to sense an actual condition of oil; and an electronic control unit (ECU) configured to control the actuator, the ECU comprising; a fundamental hydraulic-pressure value command part configured to carry out setting and command of a fundamental hydraulic-pressure command value; a feedforward control part configured to calculate through an inverse filter a first target hydraulic-pressure command value in accordance with the fundamental hydraulic-pressure command value; a feedback control part configured to calculate 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; a target control-amount determination part configured to determine a target control amount of the actuator in accordance with the first and second target hydraulic-pressure command values; and a first failure detection part configured to detect a failure of the hydraulic-pressure sensing part, wherein the feedforward control part comprises a plurality of inverse filters corresponding to the sensed actual condition of oil, wherein when the failure of the hydraulic-pressure sensing part is detected, the feedforward control part is configured to select from the plurality of inverse filters an inverse filter corresponding to the sensed actual condition of oil so as to carry out feedforward control, wherein when the failure of the hydraulic-pressure sensing part is detected, the target control amount is determined by the calculated first target hydraulic-pressure command value only, and wherein the ECU is configured to control the actuator in accordance with the determined target control amount. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A hydraulic controller, comprising:
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an actuator configured to electrically control a hydraulic pressure; a hydraulic-pressure sensing part configured to sense an actual value of the hydraulic pressure in the actuator; an oil-conditioning sensing part configured to sense an actual condition of oil; and an electronic control unit (ECU) configured to control the actuator, the ECU comprising; a fundamental hydraulic-pressure value command part configured to carry out setting and command of a fundamental hydraulic-pressure command value; a feedforward control part configured to calculate through an inverse filter a first target hydraulic-pressure command value in accordance with the fundamental hydraulic-pressure command value; a feedback control part configured to calculate 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; a target control-amount determination part configured to determine a target control amount of the actuator in accordance with the first and second target hydraulic-pressure command values, and a second failure detection part configured to detect a failure of the oil-condition sensing part, wherein when the failure of the oil-condition sensing part is detected, the feedforward control part comprises a plurality of inverse filters corresponding to the sensed actual condition of oil, wherein when the failure of the oil-condition sensing part is detected, the feedforward control part is configured to select from the plurality of inverse filters a predetermined inverse filter so as to carry out feedforward control, wherein the target control amount is determined by the calculated first target hydraulic-pressure command value only, and wherein the ECU is configured to control the actuator in accordance with the determined target control amount.
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8. A method of controlling a hydraulic controller which comprises an actuator electrically controlling a hydraulic pressure, a hydraulic-pressure sensing part sensing an actual value of the hydraulic pressure in the actuator, and an oil-condition sensing part sensing an actual condition of oil, the method comprising:
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carrying out setting and command of a fundamental hydraulic-pressure command value; calculating through an inverse filter a first target hydraulic-pressure command value in accordance with the fundamental hydraulic-pressure command value; 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; determining a target control amount of the actuator in accordance with the first and second target hydraulic-pressure command value; detecting a failure of the hydraulic-pressure sensing part; providing a plurality of inverse filters corresponding to the sensed actual condition of oil; selecting from the inverse filters an inverse filter corresponding to the sensed actual condition of oil so as to carry out feed forward control when the failure of the hydraulic pressure is detected; determining the target control amount by calculating only the first target hydraulic-pressure command value when there is a failure of the hydraulic-pressure sensing part; and controlling the actuator in accordance with the determined target control amount. - View Dependent Claims (9, 10, 11)
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Specification