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Modelling and design of a direct-drive lift control with rope elasticity and estimation of starting torque
University of Padova, Italy.
University of Padova, Italy.
ABB Corporate Research, Sweden.
University of Padova, Italy.
2007 (English)In: Industrial Electronics Society, 2007: IECON 2007. 33rd Annual Conference of the IEEE, IEEE , 2007, 828-832 p.Conference paper (Refereed)
Abstract [en]

This paper deals with position control of a direct drive rope-based lift system at mechanical brake releasing. The electrical equipment includes a high-torque, low-speed permanent magnet synchronous motor with external rotor directly connected to the rope pulley. The drive uses only stator current sensors for torque control and an incremental encoder on the motor shaft. A detailed model of the system, which comprises also rope elasticity, is presented, as wells as a load torque estimation algorithm and a feedforward action on the torque reference signal. Such reference is used to reduce the cabin falling down at brake releasing below a perceptible threshold. Final experimental results support the mathematical theory outlined in the paper, validating the proposed control strategy.

Place, publisher, year, edition, pages
IEEE , 2007. 828-832 p.
Keyword [en]
control system synthesis, elasticity, lifts, machine control, permanent magnet motors, shafts, synchronous motor drives, torque control
National Category
Control Engineering
Research subject
Electrical Engineering
URN: urn:nbn:se:kth:diva-185885DOI: 10.1109/IECON.2007.4460295ScopusID: 2-s2.0-49949119817OAI: diva2:924467
Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE

QC 20160429

Available from: 2016-04-28 Created: 2016-04-28 Last updated: 2016-04-29Bibliographically approved

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Peretti, Luca
Control Engineering

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ReferencesLink to record
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