An Over-Temperature Protection Control Strategy for Electric Power Steering Motor

2012 ◽  
Author(s):  
Shaosong Li ◽  
Changfu Zong ◽  
Lei He
Keyword(s):  
Electric Power ◽  
Control Strategy ◽  
Electric Power Steering ◽  
Power Steering

Control Strategy and Simulation Analysis for Auto Electric Power Steering System

2011 ◽  
Vol 236-238 ◽  
pp. 1603-1606
Author(s):  
Li Na Chen
Keyword(s):  
Electric Power ◽  
Control Strategy ◽  
Simulation Analysis ◽  
Characteristic Curve ◽  
Steering System ◽  
Control Mode ◽  
Electric Power Steering ◽  
Power Steering System ◽  
Power Steering ◽  
Electric Power Steering System

This paper, while introduce development trend, basic structure and working principle for auto power steering system, is analyzing on characteristic curve of steering force in steering system. The paper proposed a control mode for electric power steering system, which, analyzing control strategy for power steering system based on control module, providing a new design thought and method for electric power steering system using MATLAB simulation analysis for steering dynamic features of electric power steering system and affects of road obstruction on steering system performance.

A New Control Strategy to Reduce Steering Torque Without Perceptible Vibration for Vehicles Equipped With Electric Power Steering

2010 ◽  
Vol 132 (5) ◽  
Author(s):  
Masahiko Kurishige ◽  
Osamu Nishihara ◽  
Hiromitsu Kumamoto
Keyword(s):  
Angular Velocity ◽  
Electric Power ◽  
Control Strategy ◽  
Steering Wheel ◽  
Velocity Control ◽  
Steering Control ◽  
Electric Power Steering ◽  
Power Steering ◽  
Wide Range ◽  
Steering Torque

This paper proposes a new electric power steering control strategy, which significantly reduces the effort needed to change the steering direction of stationary vehicles. Previous attempts to reduce undesirable steering vibration have failed to reduce the steering torque because high-assist gains tend to produce oscillation or increase noise sensitivity. Herein, to eliminate this vibration, a new control strategy was developed based on pinion angular velocity control using a newly developed observer based on a simplified steering model. Tests yielded excellent estimations of the pinion angular velocity, and this made it possible to eliminate vibration at all steering wheel rotation speeds. Experiments with a test vehicle confirmed significant steering torque reduction, over a wide range of steering wheel speeds, without vibration transmission to the driver. The proposed control strategy allowed use of an assist gain more than three times higher than is conventional. Additionally, the proposed control strategy does not require supplemental sensors.

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