Research Of Performance Of Switch Used In Car Realm Test System

With the extensive application of combined switch for car in car realm , be used as especially the execute device of car electronics control system , the study of the combined switch and technical improvement seem to be especially importance. Therefore in the car realm, the manipulate stability of car have become the one of the important functions of modern automobile .The test-bed that combine the combined switch for car function synthesizes is establish in between the calculator controlling technique and the information examine technique, is an outcome of combination both. This system make a real-time examination for three parameters,that combined switch for car revolve twisting moment , pressure and insert and pullout, and draw the characteristic curve that each temperature order according to the parameter to proceed the research. The design of a system can increase not only combined switch for car technique level, but also making use of the calculator realizes every kind of parameter, to measuring to the calculator and control technique extensive application in car realm provided the basis.This text studies first the construction of the test-bed that combine the combined switch for car function synthesizes, system construction is the basic to realization examine.This text designed the machine system of synthesizes test-bed by oneself, which gearing, navigation device and execute device of revolve twisting moment type, pressure type and wiring harness insert and pullout type, provided the essential condition for the test of whole system. Introduced to gearing, navigation device and the construction of execute device, and make error analyzes to the examination accuracy, undering thecontrol of computer and SCM, guaranteeing whole system have the very high transmission accuracy.Control system is the core of test-bed, for this, in proceeding the study to the machine construction control technique with the argument, this text realizes two kinds of controls method, automatism and handwork. While automatic control method, pecking motor applying to controlling in the process, pecking motor passing gearing to control execute device. While handwork method, make use of the gearing to controlling execute device with hand wheel. Lay equal stress on to expatiated the control principle of two kinds of methods. The realization of control system offering guarantee for the whole running of test-bed.Calculator examination technique is extensive applied technique now, make use of computer and dynamic linking LIB, adopt interactive C++ Builder language, establishing the customer interface in the computer, pass control the button on the interface, realize to control all procedures is to whole system. Realizes namely the combined switch revolve twisting moment, pressure and data collect for insert and pullout and automatic control for pecking motor, combine exploitation C++ builder graph control realizes painting and real time compare, in order to analysis and study easily.After the test-bed that combine the combined switch for car function synthesizes passed whole run and adjusting stage, through analyzing the experiment data and its curves, the test-bed that combine the combined switch for car function synthesizes basically satisfying demand that test this kind of switch in capability, and proof all detecting value of twisting moment, pressure and insert and pullout are inside the allow scope of the error margin, its intelligence design can reduce to manpower and time for needing devotion consumedly, the system run dependable, the designof whole system is reasonable, successful , can proceed to the practical stage completely. The design of this system has the important meaning to improvement and increase the capability of combined switch for the vehicle.