Environmental protection and energy conservation has become urgent to solve the two main themes of social, internal combustion engine and motor as a power source as energy saving hybrid vehicles of choice, which set starter / generator in one of the ISG (Integrated Starter Generator) hybrid cars become of great practical significance and direction of the car. Hybrid vehicle product development, the most critical aspect is based on different hybrid drive systems to develop and optimize the control strategy.How hybrid car engines, electric motors, batteries and a good match between the three optimal control is the development of hybrid cars to solve the problem and not yet fully resolved technical problems. Built directly on the physical prototype development of hybrid drive systems need to spend a lot of energy. Therefore, the theory of hybrid drive systems modeling, virtual simulation and analysis is a very important product pre-development work. In this paper, mild ISG parallel hybrid electric vehicle as the research object, respectively, and virtual instruments based on bench test equipment to the platform of LabVIEW virtual instrument software to build the system model to study its drive system, specifically as follows: (1) introduced hybrid of domestic and international actuality of the ISG hybrid vehicle as the object of study the causes and significance. (2) analysis of the structural characteristics of hybrid vehicles, control strategy and its key technology. This paper introduces the common hybrid vehicle simulation software and virtual instruments and simulation software LabVIEW, and analyzed the software of choice hybrid vehicle drive system advantages. (3) of the hybrid electric vehicle structure and control strategy analysis, ISG hybrid vehicle drive system of the main components of the engine, motor and battery for the selection, and the power from the car, economy, and considering the cost of the main components of the design parameters. (4) Finally, the laboratory bench and were based on virtual instrument data acquisition system DAQ (Data Acquisition System)-based access to relevant data and signals, and then write a program on the LabVIEW software platform to build the engine, ISG motor and batterymodel, and the results were analyzed to verify the model and parameter design is reasonable. Through the rational selection and parameter design, can achieve hybrid car engine, motor, battery good match between the three and optimization of control and improve the HEV power system and economy to meet the practical significance of the development of low emission, low fuel vehicle requirements.
Key words: ISG, LabVIEW, data acquisition system, drive system, matching and optimal control
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