Invention Grant
US08219283B2 Active steering nibble control algorithm for electric steering systems
有权
电动转向系统主动转向半字节控制算法
- Patent Title: Active steering nibble control algorithm for electric steering systems
- Patent Title (中): 电动转向系统主动转向半字节控制算法
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Application No.: US12188485Application Date: 2008-08-08
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Publication No.: US08219283B2Publication Date: 2012-07-10
- Inventor: Darrel Recker , Joseph Mikhael Raad
- Applicant: Darrel Recker , Joseph Mikhael Raad
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies
- Current Assignee: Ford Global Technologies
- Current Assignee Address: US MI Dearborn
- Agent Angela M. Brunetti; Fredrick Owens
- Main IPC: A01B69/00
- IPC: A01B69/00

Abstract:
A system and method for actively cancelling steering nibble and/or brake judder in an electric power steering system using a controller and an electric motor by converting a selected wheel speed to a frequency, selecting a nibble order, determine nibble enable frequencies for cancellation, selecting a damping factor based on changes in vehicle velocity, calculating filter coefficients based on the selected damping factor, the selected nibble order and the wheel frequency, applying a gain scheduler to a steering column torque signal for the nibble enable frequencies, applying a tuned resonator filter to an output of the gain scheduler and using the filter coefficients to produce a nibble signal, calculating an active nibble cancelling torque signal from the nibble signal and applying the active nibble cancelling torque signal to the electric motor to cancel steering wheel nibble vibration.
Public/Granted literature
- US20090125186A1 Active Steering Nibble Control Algorithm for Electric Steering Systems Public/Granted day:2009-05-14
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