Speed measuring precision of vehicle drive system in pow er test system can meet accuracy requirements

but torque measurement precision can not meet the requirements.The design ideas and methods of a new type of emb edded wireless power test system were proposed

torque.Rotational speed

bendin g moment

axial vibration et al parameters of the drive system were mainly colle cted.Data acquisition part adopted ARM7 microprocessor and Zigbee wireless comm unication module LW_1151.CAN bus based on ARM9 transmission was selected as data transmission mode.Through the analysis and calculation of additional to rque caused by the bending moment and axial vibration of the elastic drive shaft

vehicle shaft power was exactly formulated.Real train experiment result indic ates that it is feasible and reliable;the system has achieved the anticipated e ffect.