Improved rotor position estimation in extended back-EMF based sensorless PM brushless AC drives with magnetic saliency [PDF]
, 2007 An improved extended back-EMF based sensorless control method is proposed for a brushless AC motor equipped with an interior permanent magnet rotor. It accounts for dq-axis cross-coupling magnetic saturation by introducing an apparent mutual winding ...
Bingham, Chris, Howe, D, Li, Y, Zhu, Z Q
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FPGA-based implementation of the back-EMF symmetric-threshold-tracking sensorless commutation method for brushless DC-machines [PDF]
, 2013 The operation of brushless DC permanent-magnet machines requires information of the rotor position to steer the semiconductor switches of the power-supply module which is commonly referred to as Brushless Commutation. Different sensorless techniques have
Darba, Araz +3 more
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Accurate Inverter Error Compensation and Related Self-Commissioning Scheme in Sensorless Induction Motor Drives [PDF]
, 2009 This paper presents a technique for accurately identifying and compensating the inverter nonlinear voltage errors that deteriorate the performance of sensorless field-oriented controlled drives at low speed.
Bojoi, R. +3 more
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Sensored and sensorless speed control methods for brushless doubly fed reluctance motors [PDF]
, 2009 The study considers aspects of scalar V/f control, vector control and direct torque (and flux) control (DTC) of the brushless doubly fed reluctance machine (BDFRM) as a promising cost-effective alternative to the existing technological solutions for ...
Abad +40 more
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Model-based aberration corrected microscopy inside a glass tube. [PDF]
J MicroscAbstract Microscope objectives achieve near diffraction‐limited performance only when used under the conditions they are designed for. In nonstandard geometries, such as thick cover slips or curved surfaces, severe aberrations arise, inevitably impairing high‐resolution imaging.
Cox DWS, Knop T, Vellekoop IM.
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Open loop control of a stepping motor with step loss detection and stall detection using back-EMF based load angle estimation [PDF]
, 2014 Stepping motors are the most used electrical machines for low power positioning. The drive controls the machine so that the rotor performs a fixed angular displacement after each step command pulse.
Derammelaere, Stijn +2 more
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High-frequency issues using rotating voltage injections intended for position self-sensing [PDF]
, 2013 The rotor position is required in many control schemes in electrical drives. Replacing position sensors by machine self-sensing estimators increases reliability and reduces cost. Solutions based on tracking magnetic anisotropies through the monitoring of
De Belie, Frederik +3 more
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Sensorless action-reaction-based residual vibration suppression for multi-degree-of-freedom flexible systems [PDF]
, 2010 This paper demonstrates the feasibility of controlling motion and vibration of a class of flexible systems with inaccessible or unknown outputs through measurements taken from their actuators which are used as single platforms for measurements, whereas ...
Khalil, Islam Shoukry Mohammed +1 more
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A new sensorless method for switched reluctance motor drives [PDF]
, 1998 This paper describes a new method for indirect sensing of the rotor position in switched reluctance motors (SRMs) using pulse width modulation voltage control.
Gallegos-Lopez, G. +2 more
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Motion control and vibration suppression of flexible lumped systems via sensorless LQR control [PDF]
, 2011 This work attempts to achieve motion control along with vibration suppression of flexible systems by developing a sensorless closed loop LQR controller. Vibration suppression is used as a performance index that has to be minimized so that motion control ...
Celebi, Besir +7 more
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