Non-linear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load

Lin, Yu-Chao; Fu, Li-Chen; Tsai, Chin-Yu

doi:10.1002/(sici)1099-1115(200003/05)14:2/3<109::aid-acs588>3.0.co;2-5

Cited by 35 publications

(5 citation statements)

References 18 publications

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“…In any case, if braking actions are not considered, every pair of constant reference signals * and * c >0 satisfies condition (17) so that closed-loop boundedness may be guaranteed for any motor parameters and any constant operating condition. The second result of the paper is stated in the following theorem, which provides sufficient conditions for the exponential stability of the equilibrium y = 0 of the closed-loop system (1) and (8)- (11).…”

Section: Remarkmentioning

confidence: 99%

“…Assuming that rotor speed and stator currents measurements are available for feedback, significant advances have been made on induction motor control [1][2][3][4][5]. Recent research efforts are focused on the speed-sensorless induction motor control, in which rotor speed measurements are not available for feedback: several approaches have been proposed and a large number of papers have been devoted to this problem [6][7][8][9][10][11][12][13][14][15][16][17]. In [17], a speed estimation method is proposed, which is incorporated in a field orientation control scheme.…”

Section: Introductionmentioning

confidence: 99%

“…An algorithm for simultaneous estimation of motor speed and rotor resistance is designed in [10], while a tacholess torque control is experimentally tested over a wide range of speed and load conditions in [7]. A rotor speed and flux observer which is adaptive with respect to rotor resistance is proposed in [11] and then used together with a state feedback controller which is adaptive with respect to load torque. An industrial solution based on nonlinear control techniques is reported in [8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A nonlinear tracking control for sensorless induction motors with uncertain load torque

Marino

Tomei

Verrelli

2007

Adaptive Control & Signal

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We propose a novel nonlinear tracking control algorithm for induction motors with uncertain load torque in which only stator currents are used for feedback: rotor speed and flux sensors are not required; no open-loop integration of flux dynamics is used. For a class of reference signals, for sufficiently small computable time-varying load torque uncertainty and for any initial condition belonging to an explicitly computed region, closed-loop boundedness is guaranteed while, under persistency of excitation, local exponential rotor speed and flux modulus tracking are achieved in the case of constant load torque. Figure 5. Rotor speed and flux modulus reference signals, applied load torque and function h(t) in (18). in which V 1 (·) and V 2 (·) are defined in (25) and (27), respectively, while the matrix Q p (t) is the solution of the linear matrix differential equatioṅThe result follows on using slight modifications of the arguments adopted in the proof of Lemma 1 in [19], guaranteeing the existence of suitable positive reals s0 , s1 , p [depending on T p and k p ] for which function W has a locally negative definite time derivative along the trajectories of the closed-loop system (1) and (8)-(11). Remark 2According to Theorem 2, under persistency of excitation, exponential rotor speed and flux modulus tracking may be guaranteed despite constant load torque uncertainty even in the presence of uncertain flux initial values: this improves the adaptive control algorithms which make use of open-loop integration of flux dynamics.

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Section: Remarkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A nonlinear tracking control for sensorless induction motors with uncertain load torque

Marino

Tomei

Verrelli

2007

Adaptive Control & Signal

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“…In Chiasson (1998), it is shown that the approach of Chiasson (1993), presented in the ( , ) a b frame is greatly simplified by considering the model in the ( , ) d q frame. In Lin, Fu, and Tsai (2000) a nonlinear indirect adaptive sensorless speed and flux tracking controller for induction motors is proposed. In the controller, only the stator currents are assumed to be measurable.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Output Feedback Voltage-Based Control of Magnetically-Saturated Induction Motors

Ismail

Fattah

Bahgat

2012

International Journal of System Dynamics Applications

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The problem of controlling the induction motor -model with magnetic saturation is considered. An adaptive controller is developed under the assumption of measurable stator currents and speed only with unknown rotor resistance and load torque. All the unknown parameters are assumed constant or slowly varying and are estimated online by the controller. Simulation results are provided for illustration.

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“…This has led to the research and development of some methods of PMACM control avoiding those sensors [5]. Other techniques have been proposed for different machines [2], [6], [7].…”

mentioning

confidence: 99%

Mechanical sensorless speed control of permanent-magnet AC motors driving an unknown load

Angelo

Bossio

Solsona

et al. 2006

IEEE Trans. Ind. Electron.

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A new sensorless scheme for high-performance speed control of permanent-magnet ac motors (PMACMs) driving an unknown load is proposed. This scheme uses an extended nonlinear reduced-order observer to estimate the induced electromotive force (EMF) and load torque. From the estimated variables, the rotor position, the rotor speed, and the position derivative of flux are calculated and are used to close the control loop. In order to improve the drive performance, the estimated load torque is incorporated as a feedforward signal in the closed control loop. In addition, the proposed sensorless PMACM drive allows the torque-ripple and copper-loss minimization for motors with an arbitrary EMF waveform. Simulation and experimental results to validate the proposal are presented in this paper.

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Non-linear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load

Cited by 35 publications

References 18 publications

A nonlinear tracking control for sensorless induction motors with uncertain load torque

A nonlinear tracking control for sensorless induction motors with uncertain load torque

Adaptive Output Feedback Voltage-Based Control of Magnetically-Saturated Induction Motors

Mechanical sensorless speed control of permanent-magnet AC motors driving an unknown load

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