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Development of Control System for Electronic Power Assisted Steering

Author(s):

Tanvi Gajanan Mahabaleshwarkar , Padmabhushan vasantdada Patil institute of technology; Deepti Deepak Desai, Padmabhushan vasantdada Patil institute of technolo; Shreya Suhas Bhagwat, Padmabhushan vasantdada Patil institute of technolo; Siddhi Dhananjay Kelkar, Padmabhushan vasantdada Patil institute of technolo

Keywords:

Electronic Power Assisted Steering (EPAS), Engine Control Unit (ECU), Microcontroller

Abstract

The project is designed to develop a control system for Electronic Power Assisted Steering (EPAS), a small compact unit requiring only a battery connection to work. The EPAS has an Engine Control Unit (ECU). The inputs to the ECU are torque and speed sensors. EPAS uses DC motor to assist the driver of a vehicle. Sensors detect the position and torque of the steering column and a computer module applies assistive torque via the motor, which connects to either the steering gear or steering column. This allows varying amounts of assistance to be applied depending on driving conditions. Electronic power steering systems eliminate the need for a pump, hoses and a drive belt connected to the engine using variable amounts of power. The configuration of an EPAS system can allow the entire power assist the system to be packaged on the rack and pinion steering gear or in the steering column. The system does not drag on the engine from either a power steering pump or alternator because it will not assist until required by driver input. Also, there is no hydraulic fluid. This system has an advantage in fuel efficiency because there is no belt driven hydraulic pump constantly running, whether assistance is required or not, and this is a major reason for their introduction. This greatly simplifies manufacturing and maintenance. By incorporating stability control electronic power steering systems can instantly vary torque assist levels. This project programs ECU and the output the ECU drives the DC motor. The DC motor controls the movement of the steering. This paper analyzes the influence of coloumn type assist on steering.

Other Details

Paper ID: IJSRDV4I20604
Published in: Volume : 4, Issue : 2
Publication Date: 01/05/2016
Page(s): 726-727

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