Title :
Investigation of vehicle immunity against RF noise
Author :
Chih-Lun Wang ; Chingchi Chen
Author_Institution :
Electrified Powertrain Eng., Dearborn, MI, USA
Abstract :
In this paper, the radiated immunity problem of the Electronic Control Modules (ECUs) on a vehicle is investigated using the transfer function method, which characterizes the system frequency response by measuring the attenuation of the signal through the cable harness. A simple bench test methodology is described to obtain the system characteristics. Based on the findings in the transfer function, it is proven that the immunity of the ECU is reduced at the resonant frequency of the harness since it is with lower attenuation. A countermeasure is then applied to the module to increase signal attenuation and its effectiveness is verified on the bench and vehicle. This method is proved to be quick and efficient in solving the immunity problem in the vehicle electronic system while the cost is minimized.
Keywords :
attenuation measurement; automotive electronics; electric vehicles; power cables; transfer functions; ECM; RF noise; bench test methodology; cable harness; cost minimization; electronic control modules; radiated immunity problem; signal attenuation measurement; system frequency response; transfer function method; vehicle electronic system; vehicle immunity; Immunity testing; Integrated circuits; Noise; Transfer functions; Transmission line measurements; Vehicles; Voltage measurement; BCI; ECU; EMC; radiated immunity; transfer function;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE
Conference_Location :
Charlotte, NC
DOI :
10.1109/APEC.2015.7104709