Gear actuator control systems and methods for dual clutch transmissions
First Claim
1. A control system for a dual clutch transmission (DCT) of a vehicle, comprising:
- a difference module that determines a difference between a desired position for a gear actuator and a measurement of a current position of the gear actuator;
a summer module that determines a sum of a derivative of the difference and a product of the difference and a predetermined gain; and
a position control module that controls the current position of the gear actuator based on the sum,wherein the current position of the gear actuator controls a position of a gear synchronizer that slides along an output shaft of the DCT, andwherein the position of the gear synchronizer controls coupling of a gear ratio with the output shaft.
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Accused Products
Abstract
A control system for a dual clutch transmission (DCT) of a vehicle comprises a difference module, a summer module, and a position control module. The difference module determines a difference between a desired position for a gear actuator and a measurement of a current position of the gear actuator. The summer module determines a sum of a derivative of the difference and a product of the difference and a predetermined gain. The position control module controls the current position of the gear actuator based on the sum. The current position of the gear actuator controls a position of a gear synchronizer that slides along an output shaft of the DCT. The position of the gear synchronizer controls coupling of a gear ratio with the output shaft.
19 Citations
18 Claims
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1. A control system for a dual clutch transmission (DCT) of a vehicle, comprising:
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a difference module that determines a difference between a desired position for a gear actuator and a measurement of a current position of the gear actuator; a summer module that determines a sum of a derivative of the difference and a product of the difference and a predetermined gain; and a position control module that controls the current position of the gear actuator based on the sum, wherein the current position of the gear actuator controls a position of a gear synchronizer that slides along an output shaft of the DCT, and wherein the position of the gear synchronizer controls coupling of a gear ratio with the output shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control system for a dual clutch transmission (DCT) of a vehicle, comprising:
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a first difference module that determines a first difference between a measurement of a current position of a gear actuator and an expected position of the gear actuator after actuation based on a control input; a second difference module that determines a second difference between a desired position for the gear actuator and the first difference; and a position control module that updates the control input based on the second difference and controls the current position based on the control input, wherein the current position of the gear actuator controls a position of a gear synchronizer that slides along an output shaft of the DCT, and wherein the position of the gear synchronizer controls coupling of a gear ratio with the output shaft. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A control system for a dual clutch transmission (DCT) of a vehicle, comprising:
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a desired position module that determines at least one desired position for a gear actuator; a position control module that determines a control input for the gear actuator, that controls a current position of the gear actuator based on the control input, and that determines N future target positions for the gear actuator for N future control loops, respectively, wherein N is an integer greater than one; and an expected position module that determines N expected future positions based on the N future target positions, respectively, wherein the position control module selectively adjusts one or more of the N future target positions based on one or more of the N expected future positions, wherein the position control module controls the current position during an M-th one of the N future control loops based on the M-th one of the N future target positions, and wherein M is an integer and is one of less than and equal to N. - View Dependent Claims (18)
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Specification