Flatness based speed control of drive systems with resonant loads

Thomsen, S.; Fuchs, Friedrich W.

doi:10.1109/iecon.2010.5675188

Cited by 12 publications

(8 citation statements)

References 38 publications

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“…Such a system is shown in Figure 1. Nonlinear controllers have been proposed to control drive systems with elastic couplings, such as a sliding mode control [14][15][16][17], neural control or fuzzy sliding mode control [18,19], flatness based control [20,21], a control method based on identification allowing for robust H∞ [22], and a predictive controller with a state space model [23]. However, for a high-quality control system, these methods require knowing exactly the parameter values of the control object.…”

Section: The Nonlinear Model Of the Drive System With Elastic Couplingsmentioning

confidence: 99%

Adaptive Controller of the Major Functions for Controlling a Drive System with Elastic Couplings

Anh

Trong

2018

Energies

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In any drive system, there are always couplings between the motor and the load. Since the hardness of these couplings is finite, they have elastic properties, causing unwanted vibration and negatively affecting system quality. When the couplings are springs with nonlinear characteristics, control is particularly difficult because it is very difficult or impossible to define the parameters of the controlled object. To solve these difficulties, this article proposes an adaptive controller of the major functions for controlling a drive system with nonlinear elastic couplings of unidentified parameters. For the proposed control system, we measure the response speed of the object, use a Luenberger observer to estimate the state variables of the system, and use an adaptive controller to control the system. The experimental results demonstrate that the control object can be controlled without knowing the parameters: the control quality of the system is very good, close to that of a system with a hard coupling, there is no vibration or overshoot, and the transition time is small.

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Section: The Nonlinear Model Of the Drive System With Elastic Couplingsmentioning

confidence: 99%

Adaptive Controller of the Major Functions for Controlling a Drive System with Elastic Couplings

Anh

Trong

2018

Energies

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“…The tracking results are compared with 1DOF and 1DOF with feedforward controls confirm that the method exhibits robustness and load torque rejection. Due to flat property of the system, Thomsen et al [10] formulate a flatness based control for a finite stiffness coupling drive system fed by an inverter with speed feedback signal. Backstepping control is developed for a multi-motor system which is vastly found in [11] suppressing flexible coupling phenomenon in linear speed and tension control system.…”

Section: Introductionmentioning

confidence: 99%

Hardware-in-the-loop based comparative analysis of speed controllers for a two-mass system using an induction motor drive with ideal stator current performance

Nguyễn

Ha³

2021

Bulletin EEI

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A comparative study of speed control performance of an induction motor drive system connecting to a load via a non-rigid shaft. The nonrigidity of the coupling is represented by stiffness and damping coefficients deteriorating speed regulating operations of the system and can be regarded as a two-mass system. In the paper, the ability of flatness based and backstepping controls in control the two-mass system is verified through comprehensive hardware-in-the-loop experiments and with the assumption of ideal stator current loop performance. Step-by-step control design procedures are given, in addition, system responses with classical PID control are also provided for parallel comparisons.

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“…Firstly, we used a flatness-based control by selecting proper system outputs. Because of the order reduction of the differential equations it is relatively easy to set the trajectory of speed and magnetic flux only in the form of a secondorder system with the time constant chosen from the current initial conditions [13][14][15][17][18][19][20]. Secondly, a control design was developed using backstepping control [16,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Experiment-based Comparative Analysis of Nonlinear Speed Control Methods for Induction Motors

Lam

Tuan

et al. 2021

J. Eng. Technol. Sci.

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Field-oriented control (FOC) for induction motors is widely used in industrial applications. By using a fast and accurate torque controller based on a stator current controller it is possible to flexibly implement advanced speed control methods to achieve proper performance both in transient and steady-state states. In this study, a deadbeat controller was used for the current loop. The nonlinear methods used for the outer loop controller were backstepping, flatness-based control, and exact feedback linearization with state derivative. The dynamic responses of these three controls were compared through various experimental results. The advantages and disadvantages of the different control structures were analyzed and evaluated in detail. Based on this evaluation, an appropriate scheme can be specified when deployed in practice.

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Flatness based speed control of drive systems with resonant loads

Cited by 12 publications

References 38 publications

Adaptive Controller of the Major Functions for Controlling a Drive System with Elastic Couplings

Adaptive Controller of the Major Functions for Controlling a Drive System with Elastic Couplings

Hardware-in-the-loop based comparative analysis of speed controllers for a two-mass system using an induction motor drive with ideal stator current performance

Experiment-based Comparative Analysis of Nonlinear Speed Control Methods for Induction Motors

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