Comprehensive Property Testing System Study On Hydraulic Control Unit Of Automobile Anti-lock Braking System Based On Virtual Instrument

Anti-lock Braking System(ABS)is a kind of machtronics equipment, which is based on traditional braking system, using electronic control technique to realize auto-adjusting of braking pressure. It keeps the wheel from lock when braking, which can get the highest braking efficiency and enhance the safety of vehicle.Hydraulic Anti-lock Braking System has three important components: Speed Sensor、Electronic Control Unit and Hydraulic Control Unit. Hydraulic Control Unit is the implement outfit of ABS. The dynamic respond characteristic of it plays an important role to ABS. It is the main fact that can influence the performance of ABS. In this paper, one capability testing system of ABS Hydraulic Control Unit is developed; and we do some testing and analyses.The paper is to investigate and design the whole testing scheme, according to the capabilities testing content of ABS Hydraulic Control Unit. A testing programmer is found. The programmer applies to testing of large quantities and pipeline. After mathematical model for the Hydraulic Control Unit built, the model of broking system and ABS control unit is found by MATLAB/simulink. A testing system for HCU is developed based on virtual instrument .The system uses DAQ card to acquire physical signal coming from sensors, then transmits the signal to computer by PCI. Its software uses the graphic programming language LabVIEW. The software of the system can control the data acquiring, and make data display real-time, data analyzing, data saving and printing report from. The design of test-bed behaves collocate of machinery- electricity- hydraulic integrative equipment, which makes the system perform the test commendably and has high degree of autoimmunization.Through ABS Hydraulic Control Unit capacity testing, it indicates that, the test-bed could perform the solenoid valve test and the whole test of ABS Hydraulic Control Unit. It has great actual engineering value to enhance the veracity and work efficiency of ABS Hydraulic Control Unit capacity testing.