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Testing 32-bit embedded system using hardware-in-the-loop-simulation of automatic transmission

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4 Author(s)
In-Gyu Jang ; Sungkyunkwan Univ., Suwon ; Inkeun Seo ; JaeWook Jeon ; Sung-Ho Hwang

Drivers are becoming more fatigued and uncomfortable as traffic densities increase, which can lead to slower reaction time. They then face the danger of traffic accidents due to an inability to cope with frequent shifting. To reduce this risk some drivers prefer automatic transmissions (AT) to manual transmissions (MT). The AT is superior drivability and less shifting shock than the MT, so the market-share of AT is increasing. The AT is controlled by Electronic Control Unit (ECU) to obtain better shifting performance. The Transmission Control Unit (TCU) is a product of higher-value-added, so the companies which have advanced technology (BOSCH, SIEMENS VDO, DELPHI, and etc.) tend to evade technology transfer. As the number of ECU used on a car is increasing gradually (for example, engine management unit, transmission control unit, brake control unit, and powertrain control unit), TCU's performance is expected to be faster and more efficient for organic communication and arithmetic processing between the control systems than the performance of 16bit controller. In this paper, the model of automatic transmission vehicle using MATLAB/Simulink is developed for the hardware in-the-loop simulation with a 32-bit embedded system. The AT control logic developed is loaded to 32-bit Embedded system platform developed on the basis of Freescale's MPC565, and we execute the hardware-in-the-loop simulation (HILS) of AT based on Real Time Operating System (RTOS). These test results show that the developed embedded system can be used as AT control unit.

Published in:

Control, Automation and Systems, 2007. ICCAS '07. International Conference on

Date of Conference:

17-20 Oct. 2007