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SUMMARY:A Kalman Filter Based\, Sensorless Stepping Motor Driver for Posit
 ioning Systems in Radioactive Environments.
DTSTART:20110506T101500
DTSTAMP:20260407T101202Z
UID:cd9763bf66755594002e9978d6e9718d0006311a272a5af476dc4af5
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. M. Butcher\, European Organization for Nuclear Research (C
 ERN)\, Geneva\, Switzerland.\nThe Equipment\, Controls and Electronics (EC
 E) section of the EN-STI group at CERN is responsible for the design\, ins
 tallation and maintenance of high precision control systems for movable de
 vices (e.g. scrapers\, collimators\, shielding and targets) in highly radi
 oactive environments\, as found in CERN’s particle accelerators. Motor d
 rive electronics are damaged by high levels of radiation and must therefor
 e be placed in radiation-safe zones\, up to 1 km from the motors. The ECE 
 section is thus currently developing a sensorless PWM stepping motor drive
 r that is able to ensure high positioning repeatability and low Electro-Ma
 gnetic Interference (EMI) when driving a motor via long cables. High posit
 ioning repeatability of the motors can be achieved using feedback control 
 based on the motor’s position.  However\, in order to increase driver ro
 bustness and reliability\, a sensorless approach\, i.e. without direct pos
 ition measurement\, is desirable. An Extended Kalman filter based method h
 as been selected for its combination of rigorous theoretical foundations a
 nd proven effectiveness in application. In this talk the design of the est
 imation algorithm\, its real-time implementation on an industrial DSP and 
 the proposed Kalman filter tuning approach will be presented.
LOCATION:MEC2405
STATUS:CONFIRMED
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