Abstract
The Electric Power Steering (EPS) or Motor Driven Power Steering (MDPS) mechanism proves to be a bright prospect among passenger vehicles ensuring better vehicle safety and fuel economy. The car manufacturers are focusing on the production of Rack type EPS system (REPS). This paper describes the development of concurrent simulation technique using TruckSim and control strategy for analysing RMDPS control system with a dynamic vehicle system. A full Truck vehicle model interacting with RMDPS control algorithm was concurrently simulated on a sinusoidal steering input. The dynamic responses of vehicle chassis and steering system resulting were evaluated and compared with proving ground experimental data. The comparisons show reasonable agreement on steering wheel torque, lateral acceleration and yaw rate. This concurrent simulation research leads the possibility of RMDPS performance evaluation of Truck and Semi-bonnet cars.
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Abbreviations
- Tsw:
-
driver input torque
- AVsw:
-
steering wheel angular velocity
- Jsw:
-
inertia of steering wheel
- Bsw:
-
upper column damping
- FRsw:
-
upper column friction
- Ktbar:
-
torsion bar compliance
- Btbar:
-
torsion bar damping
- Tmot:
-
motor torque
- Jmot:
-
motor inertia
- Bmot:
-
motor damping
- FRmot:
-
motor friction
- Rbb:
-
belt and ball screw ratio
- Ebb:
-
belt and ball screw efficiency
- Jcol:
-
lower column inertia
- Bcol:
-
lower column damping
- Rrp:
-
rack pinion ratio
- Erp:
-
rack pinion efficiency
- Jrck:
-
rack inertia
- Brck:
-
rack damping
- FRrck:
-
rack friction
- Frck:
-
rack input force
- Ktire:
-
tire spring constant
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Jang, B., Kim, J.H. & Yang, S.M. Application of rack type motor driven power steering control system for heavy vehicles. Int.J Automot. Technol. 17, 409–414 (2016). https://doi.org/10.1007/s12239-016-0042-9
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DOI: https://doi.org/10.1007/s12239-016-0042-9