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Stability, rapidity and accuracy are very important performances in Electric Power Steering (EPS). In this paper, it was explained that the contradictions among these performances can't be avoided when using traditional feedback control methods. To resolve this problem, the EPS model and feed-forward control method were studied. And then, a fuzzy PID associate with feed-forward control algorithm was...
Electric Power Steering (EPS) systems have many merits over traditional hydraulic power steering systems in fuel economy, variable assist capabilities and favorable road feeling by virtue of adjustment assist characteristic with adopting assist motor in replacement of hydraulic pump. This paper aims at modeling the mechanical parts, the assist motor and electronic control unit by bond graph technique...
The electric power steering (EPS) system is the mechatronic control system. The corrent PID control is the closed loop control with the error between the aim corrent and the motor armature backfeed corrent, and the fuzzy PID control is the mechatronic closed-loop system by the error which reflect the change of the turning-axis. In this paper we present the development of a vehicle's EPS control, based...
Regenerative braking is an effective approach for electric vehicles to extend their driving range. The control strategy of regenerative braking plays an important role in maintaining the vehicle's stability and recovering energy. In this paper, the main properties that have influence on brake energy regeneration are analyzed. Mathematical model of brake energy regenerating electric vehicles is established...
The stability of the electric power steering system is analyzed on the basis of the mathematics model for pinion -and- rack steering system, the interference resistance is also studied by the way of fixing the steering wheel. The result shows that the stability of the system becomes poor gradually along with the increase of power ratio. The stability can be improved by PD control algorithm, but the...
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