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Application of the Wavelet Analysis in the Fault Diagnosis of Rotating Machines

Author: GaoHongChao
Tutor: ChenDong; XieShaoFa
School: South China University of Technology
Course: Vehicle Engineering
Keywords: the city electric bus The key technology Power system
CLC: U469.72
Type: Master's thesis
Year: 2012
Downloads: 77
Quote: 0
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Abstract


Along with the automotive industry and automotive technology rapid development,environment pollution and energy shortage has become more obvious. Because of a largenumber of internal combustion engine vehicle exhaust gas to the environment has brought a lotof pressure. All countries in the world famous automobile factory are in both racing to developvarious types of electric cars, and has made great progress and breakthrough. The developmentof pure electric vehicles is also the national industrial policy adjustment and development theimportant content of planning, and the development of pure electric vehicles first from the citypublic traffic pure electric bus is for more important and feasible. Pure electric bus technologyresearch is one of the important task.This paper according to the current pure electric bus development present situation, theAsian games in Guangzhou during the use of electric buses city as the research object, in viewof the pure electric bus vehicle of the actual use of the performance requirements and needs,research the market can provide the vehicle matching pure electric vehicles used motor andpower battery performance and features, this paper expounds the basic structure of pure electricvehicles and key technology and equipment, such as motor and control system, battery andmanagement system, suitable for city bus can use the performance parameters corresponding tocarry on the thorough analysis, and through the investigation and study contrast correspondingperformance and technical index, determine the electric bus key technology the use ofequipment. According to the pure electric city bus in Guangzhou need operation condition, andgives the vehicle parameters and power performance, economic performance index and so onthe concrete design requirements. Completion of the pure electric city bus power transmissionsystem mainly power element (motor, power battery, transmission) of various type wereintroduced, and according to the characteristics of pure electric city bus, combining with thetarget market products determine the power system each element type and performanceparameters. In pure electric city bus power system matching is completed, through the drivemotor and its controller is test platform, according to the GB/T18488.1-2006electricautomobile motor and its controller part1: technical conditions "and" the GB/T18488.2-2006electric automobile motor and its controller section2: test method "on the drive motor and itscontroller for several test. Then the main according to the national electric vehicle dynamicperformance standard the GB/T18385-2005electric vehicle dynamic performance test method"and" the GB/T18386-2005electric automobile energy consumption rate and continue drivingrange test method ", combined with the city bus operation condition, in car road comprehensive proving ground for pure electric city bus for dynamic test and power battery performance forroad test, analyses the test results, it is concluded that pure electric city bus power systemmatching is conform to the requirements of dynamic performance, this pure electric city bus canbasically adapt to urban public transportation passenger use.

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CLC: > Transportation > Road transport > Automotive Engineering > A variety of automotive > Various energy vehicles > Electric vehicles
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