Motion control with induction motors

Lorenz, Robert D.; Lipo, T.Α.; Novotny, D.W.

doi:10.1109/5.301685

Cited by 226 publications

(77 citation statements)

References 35 publications

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“…The field-oriented induction motor control block diagram is shown in Fig. 11 [16], [17]. A significant amount of testing was carried out over the speed range of idle (850 r/min) to 2000 r/min, under loaded and unloaded conditions.…”

Section: Engine Test Stand and Resultsmentioning

confidence: 99%

Engine torque ripple cancellation with an integrated starter alternator in a hybrid electric vehicle: implementation and control

Davis

Lorenz

2003

IEEE Trans. on Ind. Applicat.

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Abstract-Integrated starter alternators (SAs) provide greater electrical generation capacity and the fuel economy and emissions benefits of hybrid electric automotive propulsion. The drive usually comprises a field-oriented induction motor or vector-controlled permanent-magnet motor coupled to the crankshaft of the engine directly or by a belt. These drives have high-bandwidth torque control and may be used for active cancellation of the significant ripple torque inherent in internal combustion engines. This paper presents an analytical model useful for the analysis of the combustion engine torque and describes a control system that uses observer-based high-fidelity torque feedforward and engine speed feedback to generate a disturbance input decoupling torque command for the SA to cancel the engine torque ripple.Index Terms-Active flywheel, engine model, engine torque, hybrid vehicle, integrated starter alternator (SA), observer, torque cancellation.

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Section: Engine Test Stand and Resultsmentioning

confidence: 99%

Engine torque ripple cancellation with an integrated starter alternator in a hybrid electric vehicle: implementation and control

Davis

Lorenz

2003

IEEE Trans. on Ind. Applicat.

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“…Then we can control the camera position by using calculated distance and motor. Calculation method is introduced next section [7][8][9][10][11][12].…”

Section: Motion Control Methodsmentioning

confidence: 99%

Development of Motion Control Camera Design Based on Wires with Anti-sway Method

Kim¹,

Jung²,

Baek³

et al. 2010

International Journal of Fuzzy Logic and Intelligent Systems

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This paper is proposed about three axis motion control camera design method based on wires. Original motion control camera consists of track, boom, L-Head, Camera and so on and is enormous and expensive. But proposed motion control camera adjusts wire length using encoders and motors. And position control use position based straight line of straight-line move method for moving precise position. Proposed simple design is able to use various place and inexpensive than original motion control camera. But, camera was vibrated and rotated due to basic property of wire. So we proposed solutions that connected method of wire and using a tensional object for reducing rotation. For proposed algorithm verification, we realized three axis motion control camera based on wire and measured oscillation while moving same trace. We confirmed the results that standard deviation of oscillation was reduced 4.93 degree than before design method.

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“…the derivative term, , may be estimated by an enhanced Luenberger observer. The Luenberger observer, introduced in [13] with design examples in [14]- [16], makes use of all available manipulated inputs as command feedforward information to allow the observer to track commanded inputs with the same response as the physical system. It also actively controls the error in its estimate of the measured physical state and so forces convergence of the estimated state, , to the actual state value.…”

Section: B Capacitor Current Feedback Via Observermentioning

confidence: 99%

Control topology options for single-phase UPS inverters

Ryan

Brumsickle

Lorenz

1997

IEEE Trans. on Ind. Applicat.

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371

107

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Abstract-Four control topologies for single-phase uninterruptible power system (UPS) inverters are presented and compared, with the common objective of providing a dynamically stiff, low total harmonic distortion (THD), sinusoidal output voltage. Full-state feedback, full-state command controllers are shown, utilizing both filter inductor current and filter capacitor current feedback to augment output voltage control. All controllers presented include output voltage decoupling in a manner analogous to "back-electromotive force (EMF)" decoupling in dc motor drives. Disturbance input decoupling of the load current and its derivative is presented. An observer-based controller is additionally considered and is shown to be a technically viable, economically attractive option. The accuracy transfer function of the observer estimate is used to evaluate its measurement performance. Comparative disturbance rejection is evaluated by overlaying the dynamic stiffness (inverse of output impedance) frequency response of each controller on a single plot. Experimental results for one controller are presented.

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Motion control with induction motors

Cited by 226 publications

References 35 publications

Engine torque ripple cancellation with an integrated starter alternator in a hybrid electric vehicle: implementation and control

Engine torque ripple cancellation with an integrated starter alternator in a hybrid electric vehicle: implementation and control

Development of Motion Control Camera Design Based on Wires with Anti-sway Method

Control topology options for single-phase UPS inverters

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