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servo_motor - SERVO MOTOR DYNAMICS Rajesh Rajamani...

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1 SERVO MOTOR DYNAMICS Rajesh Rajamani Department of Mechanical Engineering University of Minnesota PRINCIPLES Conductor of length L in a magnetic field of flux density B carrying a current I Force on the conductor = BIL When a conductor moves in a magnetic field with flux =BA , a current is induced in it equal to called back-emf: it is in such a direction as to produce a current that sets up magnetic fields which tend to neutralize the change in magnetic flux dt d e
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