Invention Grant
- Patent Title: System and method for reducing steering wheel vibration in electronic power steering systems
- Patent Title (中): 减少电动助力转向系统方向盘振动的系统和方法
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Application No.: US13840030Application Date: 2013-03-15
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Publication No.: US09120500B2Publication Date: 2015-09-01
- Inventor: Kenneth L. Oblizajek , John D. Sopoci , Suresh Puradchithasan
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: B62D5/04
- IPC: B62D5/04

Abstract:
Methods and apparatus are provided for reducing steering wheel vibrations in electronic power steering systems. The apparatus includes a processor and performs a method that estimates an average angular wheel speed of at least one wheel of the vehicle; determines an average wheel angle from the average angular wheel speed; generates sine and cosine functions of the average angular wheel angle; processes the sine and cosine functions with a steering wheel torque signal received from a torque sensor to extract amplitude components of at least one of the sine and cosine functions; reconstructs the sine and cosine functions using the steering wheel torque signal; combines the sine and cosine functions to provide a control signal, and controls the EPS system via the control signal to attenuate smooth road shake vibrations in a steering wheel of the vehicle.
Public/Granted literature
- US20140277946A1 SYSTEM AND METHOD FOR REDUCING STEERING WHEEL VIBRATION IN ELECTRONIC POWER STEERING SYSTEMS Public/Granted day:2014-09-18
Information query
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