The Test Micromotor System Of The Automobile And Engine

With the development of automation electron and intellectualization of the automile, more and more micromotors are being used in electronically and automatically controlled mechanism. It needs to test the motor's performance and parameters during its production, movement and scientific research process in order to check whether the motor satisfies the related specification or not, or to seek the new way and method to improve its design craft. According to the motor's performance test bench project of a micromotors company, it is designed the micromotor test system of the automobile and the engine.The system has simple organization and can be operated easily without too much manual intervention.Its automaticity is high and it avoids many shortcomings of traditional measuring technique, such as it wastes time, the judgement standard is inconsistent, the precision is not high and so on.This system can detect many capabilities of the micromotor under different load such as rotated speed,power,torque,noise,vibration.It can judge whether the motor is eligible or not according some standard.It is consist of brake part, rotated speed test part,motor installment part as well as vibration measurement part.The brake can give the micromotor a certain resistance,we can control the output torque of the brake by controlling its input electric current,we can measure the brake torque by testing the brake force on a certain brake arm;the rotated speed test part is made up of the magnetic clutch and the encoder,and the magnetic clutch is used to control that the motor connects with or breaks away from the magnetic clutch,and the encoder is used to measure the rotated speed of the micromotor;the design of the motor installment part is very ingeniousm,it can install left or right micromotor,and it use air cylinder as the execution to fix the motor;it detect the motor's noise and vibration with piezoelectricity acceleration sensor.Right sensors are chosen to insure the precision of the test system, corresponding signal processing electric circuit, A/D switching circuit and digita display circuit are designed, and appropriate recuperating is chosen.As to executioncomponents, for example brake, magnetic clutch, air cylinder,it is designed reasonable control circuits. We take Visual C++6.0 as development instrument,which utilize design philosophy of object oriented programming.We developed the entire software by VC++6.0 under Windows operating system.Its has friendly graphic user interface,fiexible operating manner,and powerful data processing function.Clicking start test key-press on control interface,system will read the data in specific port of A/D card by running related function of VC++ and realize the data collecting.At the same time,system can send order to specific port of D/A card to control the peripheral equipment.The software will process collected data and show corresponding curve on screen,produce and print the test report.