This paper proposed a design of the drivetmin system of an electric bus with ultraeapacitor （UC） as the only on-board power source. The system includes three main parts, namely, UC bank, motor and the converter, veh...This paper proposed a design of the drivetmin system of an electric bus with ultraeapacitor （UC） as the only on-board power source. The system includes three main parts, namely, UC bank, motor and the converter, vehicle management unit （VMU）. Analyses results in detail on the funetional design and ex-periments on work bench of each part were also presented, which validated the reliability of the system. Furthermore, driving results in field of the bus verified the feasibility of the design of the drivetrain sys-tem. The bus has very good dynamic performanees and shows a promising applieations prospeet in the short and medium route buses system.展开更多
Measures of individualisation and integration offer a great potential for further development and optimisation in hydraulic drive technology. Advantages are seen especially for energy efficiency and functionality. To ...Measures of individualisation and integration offer a great potential for further development and optimisation in hydraulic drive technology. Advantages are seen especially for energy efficiency and functionality. To exploit these benefits the independent metering technology appears to be very attractive which motivates the extensive research on this topic during the last decade. This article starts with a brief overview on common hardware arrangements and general control approaches. Furthermore an approach to the safety evaluation of novel independent metering systems is given. Afterwards different application examples are presented, such as a cardboard packaging press in the area of stationary machines and in the fields of mobile machines a working implement of an excavator and an active steering system for tractors. The article ends with a brief summary of the valve requirements for independent metering.展开更多
文摘This paper proposed a design of the drivetmin system of an electric bus with ultraeapacitor （UC） as the only on-board power source. The system includes three main parts, namely, UC bank, motor and the converter, vehicle management unit （VMU）. Analyses results in detail on the funetional design and ex-periments on work bench of each part were also presented, which validated the reliability of the system. Furthermore, driving results in field of the bus verified the feasibility of the design of the drivetrain sys-tem. The bus has very good dynamic performanees and shows a promising applieations prospeet in the short and medium route buses system.
文摘Measures of individualisation and integration offer a great potential for further development and optimisation in hydraulic drive technology. Advantages are seen especially for energy efficiency and functionality. To exploit these benefits the independent metering technology appears to be very attractive which motivates the extensive research on this topic during the last decade. This article starts with a brief overview on common hardware arrangements and general control approaches. Furthermore an approach to the safety evaluation of novel independent metering systems is given. Afterwards different application examples are presented, such as a cardboard packaging press in the area of stationary machines and in the fields of mobile machines a working implement of an excavator and an active steering system for tractors. The article ends with a brief summary of the valve requirements for independent metering.
