ACTIVE-DAMPING BASED APPROACH TO MITIGATE EFFECTS OF HIGH RACK LOADS ON EPS SYSTEM
First Claim
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1. A system for actively damping a power steering system, the system comprising:
- a damping activation module that generates a damping activation signal based on a motor velocity signal, a t-bar torque signal, and a final motor command, the damping activation signal activates a damping command;
a command calculation module that generates a calculated command based on the motor velocity signal and a vehicle speed signal; and
a damping calculation module that generates the damping command in response to the damping activation signal being in a TRUE state and based on the calculated command, the damping command reducing the motor velocity of a motor of the power steering system.
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Abstract
A system for actively damping a power steering system includes a damping activation module that generates a damping activation signal based on a motor velocity signal, a t-bar torque signal, and a final motor command; a command calculation module that generates a calculated command based on the motor velocity signal and a vehicle speed signal; and a damping calculation module that generates a damping command based on the damping activation signal and the calculated command, the damping command reduces a motor velocity of a motor of the power steering system to mitigate a rack disturbance.
8 Citations
20 Claims
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1. A system for actively damping a power steering system, the system comprising:
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a damping activation module that generates a damping activation signal based on a motor velocity signal, a t-bar torque signal, and a final motor command, the damping activation signal activates a damping command; a command calculation module that generates a calculated command based on the motor velocity signal and a vehicle speed signal; and a damping calculation module that generates the damping command in response to the damping activation signal being in a TRUE state and based on the calculated command, the damping command reducing the motor velocity of a motor of the power steering system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for actively damping a power steering system, the method comprising:
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determining a damping activation signal based on a motor velocity signal, a t-bar torque signal, and a final motor command, the damping activation signal being a BOOLEAN signal that activates a damping command to mitigate a rack disturbance; determining a calculated command based on the motor velocity signal and a vehicle speed signal; and generating the damping command by multiplying the damping activation signal and the calculated command, the damping command reducing a motor velocity of a motor of the power steering system in response to the damping activation signal being TRUE. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for actively damping a power steering system, the system comprising:
a processor configured to; determine a damping activation signal based on a motor velocity signal, a t-bar torque signal, and a final motor command, the damping activation signal being a BOOLEAN signal indicative of whether to reduce the motor velocity of a motor of the power steering system to mitigate a rack disturbance; determine a calculated command based on the motor velocity signal and a vehicle speed signal; and generate a damping command by multiplying the damping activation signal and the calculated command, the damping command reducing the motor velocity of the motor of the power steering system. - View Dependent Claims (16, 17, 18, 19, 20)
Specification