Improved design of electromagnetic compatibility for automatic transmission control module

This paper introduces the improved measures of Electromagnetic Compatibility (EMC) for Automatic Transmission Control Module (TCM) circuit design. The improved electromagnetic designs for TCM circuit can be divided into two aspects, which are Electromagnetic Interference (EMI) and Electromagnetic Susceptibility (EMS). The EMI characteristics are obtained by measuring the TCM. Through analyzing the source and principles of electromagnetic noise, the improved circuits are designed to depress the EMI emissions depending on the characteristics of EMI noise and EMC standards. For EMS, the protection measures are used to protect the TCM basing on the parameters and effects of EMS test. And research method integrated computer simulation and experiment has been used in this paper. The PSPICE circuit simulation software provides guide for improving the design of TCM circuits. After debugging the actual improved circuits and adjusting the circuits' parameters, then the improved circuits are really used in the TCM. And the improved TCM can satisfy the EMC standards.