Design And Development Of A HEV Simulator Based-on LabVIEW

Energy crisis and environmental pollution are the main challenges for thedevelopment of the automobile industry. In HEV power system, HCU isresponsible for coordinating different components to achieve high efficiency andreliability, also HCU affects directly on performance and safety of the entire vehicle.Hence the development and test of the HEV's controller are the key technologies forthe hybrid system.Currently, both domestic and abroad vehicle industries mainly adopt HIL as thefunctional test of the HCU. Considering the fact that arithmetic of the HCU has a lessdemanding for real-time, also the main stream in the loop simulator has a high cost, inthis paper, the author came up with an entire vehicle simulator based on LabVIEWcRIO which has a relative low cost.This paper mainly focused on the following four aspects of the study of the HEVsimulator.Based on the requirement of real-time test and hardware, we choose the NI cRIOsuit as the hardware of the test. cRIO has its own high speed floating-point MCU andFPGA,therefore can guarantee the real-time performance of the system.MeanwhileCRIO software system is seamless connected with LabVIEW which supply aconvenient way to achieve the real-time arithmetic of MCU and FPGA throughLabVIEW programming.In this paper, we utilize the LabVIEW simulation and design module to establishmotor model, ICE model, battery model, transmission model and vehicle dynamicalmodel, which supply the operating environment for the real-time test of the simulator.The simulation of ICE, motor and battery is based on the experimental data; thereforeit is both convenient and reliable. Based on the structure of single axis parallel HEVsystem,this paper established the simulation model of the HEV system, andcompleted the simulation of the dynamic properties of the entire vehicle.By the advantage of LabVIEW human-computer interface, we achieve a friendlyupper machine control interface. The interface not only can real-time display thevarious data from the simulator through digital chart, but also can realize animatedpresentation of the energy flow of HEV system, offering a vast convenience for thedevelopment of control strategies. Based on the labview's own simulation function and HCU rapid prototyping, weconducted the HCU off-line simulation for the controller developed in this paper andonline validating simulation, also explained the experimental results. The HEVsimulator developed in this paper shows a fairly well result for the dynamic propertyof the entire vehicle, and the real-time arithmetic can meet the requirements of theHCU test.