Researching On The Control Systems Of Automobile Driveline Test Rig Base On Feedback Technologys

Automobile driveline test rig is used to test and study driveline assembly such asautomation transmission, driving axis, half axis, differential, final drive which are thekey parts of a whole vehicle and directly affect its powering, energy saving andreliability.In order to exert enough the functions of the test rig, we should focus in its controllingsystem. By developing and studying the controlling system, we could enhance thecontrolling precision, study the loading mode in different conditions and finallyensure the stability and safety in the process of testing.The mechanical structure, electric system and controlling structure are introduced. andvirtual instrument applying in computer test and controlling system is narrated. Havea full introduction to the structure, function and test methods of the automobiledriveline test rig.Data acquisition system is used to acquire different kinds of state parameters inprocess of initialization so as to let the operator monitor the working condition of thewhole test rig. The data acquisition system also obtains and shows the necessary datain testing which is very useful for the father research and pave the way for closed-loopcontrolling in the test rig.In driving system, industrial control computer (ICC) sends orders to the converter inorder to control the movements of the drive motor. The diver system is the powersource of the whole test rig. Expound the drive controlling principle, analyze relatedindexes and realize the drive control.In loading system, the driving resistance could be simulated according to differentroad surfaces and driving conditions by controlling the slip radios of the loadingmotor with the converter.Assembly parts, such as driving axis, half axis and differential are usually tested inwearing experiment which only needs to load at different quantities. However, for theautomation transmission, it is a significant function for the test rig to detect the faultrange and studying the shift rule besides wearing testing. So the test rig should equipthe function of controlling kinds of electromagnetic valves to satisfy different testingrequirements.Automobile driveline test rig is an all-around flatform. Setting the standards and rulesof the operation in hardware and software could effectively protect the hardware equipments, ensure the stability of the testing and make full use of the test rig. Besides, adding the protecting function in ICC software could largely avoid the damages in converter from overcurrent and prevent the motors' out of control, finally make sure of the safety of students and faulty.