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The paper presents an overview of various steps required for solving the problem of designing electric drives for traction applications. The design problem is solved as an optimization problem with multiple objectives subject to various constraints governed by physical characteristics and limitations of materials and specific parts used for the assembly of electric motors and power converters, international...
A novel electromagnetic clutch system is proposed to resolve the mechanical and electromagnetic impacts in the in-wheel motor drive electric vehicles. The dynamic analysis of the system is presented for researching the engagement process. Based on the dynamic analysis, the relationship between the action forces in the engagement is studied and the range of clutch's angular deflection is given for...
The electric/hybrid vehicle are promising technologies and practical for the transport and the environment. For energy management, the vehicle longitudinal dynamics used to estimate vehicle power demands depend on several parameters, including its mass and its rolling conditions. This study compared the methods of estimating the rolling resistance coefficient and mass to establish energy planning...
In the present paper the electro-mechanical model of an electric vehicle suitable for battery energy management systems has been presented. In order to verify its accuracy, the comparison between the experimental and simulation results has been carried out. Particularly, the energy battery estimation of a Smart Fortwo electric vehicle has been developed. The electromechanical model describing the...
With the rapid development of mass transit system, how to improve the control accuracy of the train become increasingly important. During the train's running process, the resistance force is changing with some factors, such as, speed and track geometry, and these factors play an important role in tracking accuracy. Most existing methods assume the resistance force is available for feedback control...
This work investigates the position and velocity tracking control problem of high speed trains with multiple vehicles connected through couplers. A dynamic model coupled with nonlinear and elastic impacts between adjacent vehicles as well as traction/braking nonlinearities and actuation faults is derived. Neuroadaptive fault-tolerant control algorithms are developed to deal with various factors such...
Resistive forces such as mechanical frictions and aerodynamic drags are inevitable in high speed train during its operation. This paper investigates the problem of adaptive compensation of such uncertain resistive forces in train systems to achieve high precision speed and position tracking. A control scheme is developed via adaptive backstepping approach to address not only the traction and braking...
On the basis of the former diagram method, the paper explains the reason that the slope of refuge siding must be included in the conversion before inspecting and the conversion method so that the precision of the diagram method for inspecting the length of refuge siding satisfies the demands of designing in all the stages.
In this paper, the asynchronous brake control technology is proposed for the safety of heavy-haul trains in heavy-haul transportations. And the longitudinal dynamics of heavy-haul trains, which is the basic problem of this technology, was studied. A longitudinal dynamical model was established by analyzing the condition of trails, the equipments of rolling stock, train formations, etc. and verified...
This paper focuses on the position and velocity tracking control problem of high speed trains consisting of multiple vehicles (i.e., locomotives and carriages). A new dynamic model explicitly reflecting the interactive impacts among the vehicles is established using multiple point-mass Newton equations. Such impacts, together with aerodynamic resistance, mechanical resistance and some other additional...
A virtual prototype model of vehicle, UA tire model and road spectrum model were established according to BT345J Articulated Dump Truck (ADT). The simulations of steering in situ and in steering in driving were carried out for ADT in ADAMS / VIEW platform. The varying rules of tire dynamic parameters under the two conditions were compared and analyzed. The results shows that the varying rule of lateral...
Control of regenerative retarding of a vehicle equipped with a new energy recovery retarder is investigated in this paper. The handle and pedal operations are designed to satisfy the need of control of vehicle brake under different working conditions. As the dynamics of the retarding process is highly nonlinear and time-variant, the control of regenerative retarding becomes rather complicated. For...
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