The Research And Development Of FEAD System Dynamic Parameter Test System Based On LabVIEW

FEAD is the abbreviation of Front End Accessory Drive come.Engine front end accessory drive system is referred to the various engine front end accessory drive system to the crankshaft like the drive wheel,driven to bring air conditioning compressors,pumps,generators,power steering pumps,fans and other accessories round the system work through the skin,and then there are V-belt accessory drive system and V-ribbed belt accessory drive system components combined with the belt,in order to reduce the extent of the belt loosen side and to ensure power transfer wheel system installed on the belt tensioner tensioning process.The test value of the test result is analysed to evaluate the front engine accessory drive system evaluation,which would bring a practical engineering significance.On the basic study of system front of the engine accessory drive system,the essay is based on the detailed description of the development program FEAD system test systems.After studying the static and dynamic characteristics of the front of the engine accessory drive system and discussing the experimental test methods and data processing methods,the selection of hardware to software is designed to test system development,mainly to complete the attachment gear train each of the wheels data acquisition and processing speed,the belt tight side of the midpoint of the lateral vibration,oscillating tension arm of the crankshaft at the belt slip ratio and the belt tension static parameters.Graphical programming language is more intuitive,combined with National Instruments(NI)provides CompactRIO series instrument consisting of virtual instruments shorten development time.the system software uses LabVIEW as the development environment,with the Real-time systems for real-time data acquisition and processing.The test system has the advantages of good expansibility,readability,stability,portable and so on,achieves the function demand test.