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Article #1610acoustically quiet motor controllers
From: Dale Bryan
Date: Tue, 11 Jun 1991 15:04
Date: Tue, 11 Jun 1991 15:04
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826 bytes
does anyone know of an acoustically quiet dc brushless motor controller (120V)? we are using 3/4 hp dc brushless motors with buil in motor controllers to drive thrusters on an underwater vehicle. the problem is that the motor controllers pwm frequency and its harmonics is radiating sound into the water. this sound is interferring with acoustic sensors aboard the vehicle. thanks in advance. dale bryan email: bryan@marlin.nosc.mil
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!hellgate.utah.edu!dog.ee.lbl.gov!nosc!marlin!bryanShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!hellgate.utah.edu!dog.ee.lbl.gov!nosc!marlin!bryan From: bryan@marlin.NOSC.MIL (Dale Bryan) Newsgroups: comp.robotics Subject: acoustically quiet motor controllers Message-ID: <1775@marlin.NOSC.MIL> Date: 11 Jun 91 15:04:47 GMT Organization: Naval Ocean Systems Center, San Diego Lines: 9