Correction of periodic errors in a weather satellite servo using repetitive control

Broberg, Hal; Molyet, R.G.

doi:10.1109/cca.1992.269765

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…Obviously, for systems with dc reference inputs, (3) is a discrete time integral controller, and plus is a discrete time PID controller; for systems with ac reference inputs, (3) is a discrete time repetitive controller. Repetitive controllers are widely found in industry applications [18]- [20]. Therefore, (3) is the unified approach of integral controllers and repetitive controllers.…”

Section: Unified Robust Zero-error Tracking Controllermentioning

confidence: 99%

Unified robust zero-error tracking control of CVCF PWM converters

Zhou

Wang

2002

IEEE Trans. Circuits Syst. I

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This paper proposes a unified robust zero-error tracking control scheme for constant-voltage-constant-frequency (CVCF) PWM converters to eliminate the tracking error in the presence. Based on the internal model principle, the proposed control scheme plugs a reference signal generator into the stable conventional feedback closed-loop system to accomplish zero error tracking of the dc or ac reference input. The design of the unified zero error tracking controller is systematically developed and the stability analysis of overall control system is discussed. Three examples of the proposed controlled CVCF converters, such as CVCF PWM inverter, boost-type PWM rectifier, and dc-dc PWM buck converter are studied to testify the validity of the proposed approach. Simulation and experimental results demonstrate satisfactory performance of the proposed unified robust zero error tracking controller even under parameter uncertainties and load disturbances.

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Section: Unified Robust Zero-error Tracking Controllermentioning

confidence: 99%

Unified robust zero-error tracking control of CVCF PWM converters

Zhou

Wang

2002

IEEE Trans. Circuits Syst. I

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“…In engineering, there are several applications that involve periodicity such as disk drives [1]- [4], active air bearing systems [5], [6], active noise control [7], satellite attitude stabilization [8], [9], and power electronics [10]- [29]. Control of systems with periodic inputs involves some subtleties, which have to be taken into account for designing a robust and reliable system.…”

mentioning

confidence: 99%

Composite Nonlinear Feedback Control and Stability Analysis of a Grid-Connected Voltage Source Inverter With $LCL$ Filter

Eren

Pahlevaninezhad

Bakhshai

et al. 2013

IEEE Trans. Ind. Electron.

119

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In this paper, the stability analysis of a gridconnected voltage source inverter with an LCL filter is presented. The Poincaré map is used to analyze the stability of the system from a geometric point of view and provides a better understanding of the system performance. In addition, a composite nonlinear feedback (CNF) control is proposed in order to improve the transient and steady-state performance of the control system. Simulation and experimental analysis verify the validity of the analysis and also show the superiority of the CNF-based controller compared to the conventional proportional-resonant controller during transients and steady-state operation.Index Terms-DC/AC inverter, nonlinear control, observer, proportional-resonant (PR) controller, pulsewidth modulation (PWM), renewable energy, state feedback.

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“…The overall control law with ufa as the polynomial controller output which only imposes squaring ready being used to form the prevents the algorithm from blo gular points. While J" (6) 2 0 the algorithm always upis used for plant stabilization and to prevent the modeled dates in the gradient descent dire part of the disturbance from affecting the output. The find a (local or global) minimum.…”

Section: Pseudo Feedforward Controlmentioning

confidence: 99%

Vibration suppression with frequency adaptation

Hillerström

Proceedings of International Conference on Control Applications

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T h e aim o f this paper is to present an adaptive solution to suppression o f vibrations. Adaptation is appropriate whenever the fundamental frequency is unknown or drifting, e.g. when the vibration is caused by a rotational machine with unknown rotational speed. T h e approach presented here has its roots in repetitive control based on models o f isolated frequencies rather than the commonly used delay model. T h e relationship between different modeled frequencies is fixed by the model structure, and the fundamental frequency is obtained by a Newton method. To show the feasibility o f this approach, it was used to reduce vibrations on a lever that were caused by a motor with imbalance in its rotation. A s actuator, a standard loudspeaker was used, and the vibration was sensed by an accelerometer.

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Correction of periodic errors in a weather satellite servo using repetitive control

Cited by 15 publications

References 5 publications

Unified robust zero-error tracking control of CVCF PWM converters

Unified robust zero-error tracking control of CVCF PWM converters

Composite Nonlinear Feedback Control and Stability Analysis of a Grid-Connected Voltage Source Inverter With $LCL$ Filter

Vibration suppression with frequency adaptation

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