ANC噪声主动控制.pptx

发布时间：2022-06-16 发布人：admin 分类：说明书资料大小：0.75M 资料格式：pptx 举报版权申诉

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文本预览

Introduction for ANC (Active Noise Control) 15MY D2xx ANC Tech Review Nov. 09. 2015 Panasonic Panasonic AIS Company Panasonic Automotive Systems Sales China (PASSCN) Panasonic Manufacturing Xiamen (PMX) 1

Trend Trend Body Engine Transmission Muffler ・Less weight ・Less insulator ・downsizing V8 → V6 V6 → L4 ・Cylinder de-activation ・Expand lock up area ・Improve exhaust efficiency Many efforts for fuel economy Fuel economy However Increase Engine booming noise Poor Vehicle sound quality Not sporty Not powerful 2

Trend Goal of ANC NVH and fuel efficiency are trade-off technology Quietness Fuel Economy F.E. Improvement ANC can help to achieve both target of NVH and Fuel Efficiency Panasonic target is fuel economics! 3

What’s Active Noise Control?

Engine Booming Noise ANC System booming noise SIN generator COS generator Engine rotation Signal Engine Noise Frequency Detector Front Seat Rear Seat e r u s s e r P d n u o S ) B d ( e r u s s e r P d n u o S ) B d ( Without control With control Without control With control More than 10dB reduction at all seat

ANC 【Introduction of System】 ① Engine Booming Noise ANC Reduce fundamental frequency noise of engine ( 1st order) and Reduce some harmonic (2nd/3rd order) noise 40Hz～150Hz Reduce ② Engine Sound Enhancement System (ASC) Enhance Reduce some orders and Enhance some characterized orders Reduce

Panasonic ANC Development History 2002 2003 2004 2005 2006 2007 2008 2009 2010-2011 2012- INSPIRE ELYSION HONDA ODYSSEY ACURA RL Hybrid ACCORD Asia PILOT Cylinder de-activation system booming Cylinder de-activation system booming Booming from exhaust Cylinder De-Activation Boom Cylinder de-activation system booming TOYOTA 50 ANC Models Launched and 6 OEMs Patents US JPN 6 Patents 10 Patents ACCORD Cylinder De-Activation Boom CROWN Hybrid GM EQUINOX & TERRAIN Low RPM Boom Fuel Economy Low RPM Boom Fuel Economy NISSAN Low RPM Boom Fuel Economy Ford Low RPM Boom Fuel Economy

Electrical Hardware Review - 4ch Amplifier * Hardwire communication Re-flashing Line Up to 4 mics Engine RPM LPF IF CIRCUIT I / O signals IF CIRCUIT (Cylinder status signal) IF CIRCUIT Battery RmteEnableOn POWER SUPPLY 5V 9V VEHICLE COMPUTER H/U MICRO ANC Amplifier Module 4 CH Amplifier ANC output x4ch MICRO COMPUTER MIXER Audio Mute Differential Amplifier FR/RR SIGNALS

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