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대역 확산 PWM 제어를 통한 CDC 댐퍼 솔레노이드 밸브 구동 시 EMI 성능 개선 연구
성시환(Sihwan Sung),정우진(Woojin Jung),강용진(Yongjin Kang),김병곤(Byunggon Kim),한상수(Sangsu Han) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
As more Electronic Control Units (ECU) are increased in the car, the electromagnetic noise from the many electronic units would be possible to interference to other electronic systems. All of the switching signals such as MCU, DC/DC clock and PWM signal for Motor/Solenoid valve control in ECU can be electromagnetic interference (EMI) noise. In this paper, we propose the CDC Solenoid Valve control scheme using a Spread Spectrum PWM Technique. Spread spectrum is a technique introduced for mitigating EMI problems in many class of circuits. With particular emphasis on solenoid valve control, we consider the most common and most efficient known spreading techniques, looking for spreading parameters that ensure the EMI reduction.