Automobile Transmission Testing System
A vehicle’s actual application conditions, such as startup, idle park, low speed or high speed driving, acceleration, deceleration, climbing, and reversing are extremely complex. They require the driving force and speed to change over a large range–a larger range, in fact, than the piston engines that are widely adopted at present are capable of. In order to adapt to the constantly changing conditions and to enable the engine to work within its capabilities (and at higher power with lower fuel consumption), a gearbox, or transmission, is added to the power train. The transmission is one of the highest-tech components of a vehicle. And computerized transmission testing aims to simulate actual car operating conditions while still on the production line, to test a number of parameters.
At present, the automotive transmission detection scheme primarily involves using a generator analog engine and generator analog load methods to achieve online testing functions. The specific procedures are as follows: Two AC motors simulate vehicle conditions and detect the transmission’s integrated indicators online. During each stage of the shift change process, the load capacity can be used to monitor the system’s operating parameters and plot out the system performance curve in real time. A robotic arm automatically completes different gear shift actions for different types of transmissions. Operating parameters are recorded immediately, providing real-time monitoring for temperature, speed, torque, and current, and providing automatic alarm and analyses if faults are encountered. The core of the control setup is the computers. The control software manages system processes, task allocation, instruction transmission, fault detection, etc., according to the field data and current operating conditions.
The automobile transmission detection system requirements are as follows:
- The machine will remain in a long-term vibrating state because of the engine running tests. Therefore, the computer must have an excellent shock resistance platform.
- High I/O expansion flexibility.
- Must be able to achieve instant control of the temperature, rotation speed, torque, noise, speed, and other status parameters.
- The system must be able to adapt to the plant's stringent requirements such as vibration, oil, dust, and continuous production
The system adopts Advantech’s rugged modular industrial computer, MIC-1816, which features an integrated, high-speed, multifunction data acquisition module, 16-bit high-resolution, and 1 MS/s ultra-high sampling rate that fully captures transmission operating parameters. Data such as temperature, rotation speed, torque, and noise are instantly displayed by the FPM-2150 industrial-grade touch screen display in the control room. In addition, MIC-1816 is used to output the control parameters for gearbox loading, shift, and other operations. Meanwhile, the WebAccess configuration software can perform data logging and real-time monitoring on the operations of the entire test system, and can perform automatic alarm and analyses if faults are encountered.