The application of scheduled H/sub infinity / controllers to a VSTOL aircraft

Hyde, Richard; Glover, K.

doi:10.1109/9.231458

Cited by 193 publications

(85 citation statements)

References 13 publications

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“…The diagonal elements of pre-compensators were selected to boost the low-frequency gain and to reduce the loop gain at the high frequency. 17,18 The integral terms were taken in order to improve the performance of the closed loop, such as the roll-off rate at cross-over and the low-frequency gain, while the proportional parts were to adjust the lead or lag phase. Therefore, the diagonal elements of pre-compensator were selected as follows …”

Section: Simulation Resultsmentioning

confidence: 99%

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RETRACTED: Flexible performance design for the H_∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

Dong

Liu

Yao

et al. 2016

Advances in Mechanical Engineering

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This article introduces a new H ' loop-shaping control to decrease the complexity of the appropriate selection of the required performance for a coaxial rotor helicopter with unpredicted or unknown unstructured uncertainties. Uncertainty models are normally assumed that some knowledge of type is known. And to model a particular uncertainty as a separate model is necessary in the high-performance design of specified applications. But to model each particular uncertainty will increase the complexity of performance design for the extremely complex plant. H ' loop-shaping control provides a competitive and flexible choice to simultaneously represent a family of unpredicted and unconsidered unstructured uncertainty bounded by H ' norm. Many researches have been conducted to consider some aspects of this method, for example, the nominal stability, robustness to uncertainty, and implementation issues. However, to decrease the complexity of the appropriate selection of the required performance was not considered seriously. Therefore, a sufficient set of stable condition is derived using linear matrix inequality approach to provide the flexible performance design considering unpredicted and unknown unstructured uncertainties. Furthermore, the proposed method is applied to stabilize the attitude subsystem of a reconstructed coaxial rotor helicopter. Simulations indicate the effectiveness of the proposed method in the step response.

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Section: Simulation Resultsmentioning

confidence: 99%

“…17 Therefore, it is necessary to consider the explicit unstructured system uncertainty to detail the various models available since robustness to uncertainty is a vital characteristic required of control design.…”

Section: Uncertainty Modelmentioning

confidence: 99%

RETRACTED: Flexible performance design for the H_∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

Dong

Liu

Yao

et al. 2016

Advances in Mechanical Engineering

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“…Using the bilinear interpolating method [16], these control outputs are interpolated according to the water levels h 1 and h 2 to produce the following gain scheduling controller:…”

Section: Design Of a Gain Scheduling Controllermentioning

confidence: 99%

“…On the other hand, the work in [14] dealt with the design of a gain scheduling PI controller for the process; the gain scheduling design is done according to the operating input voltages. In this paper, three well-known controllers consisting of a gain scheduling control [15][16][17], a linear parameter varying control [18][19][20][21] and an input-output feedback linearization control [22,23] are designed and implemented to control the water levels in the quadruple tank process over the whole range of operation of the process. Moreover, an integral action is included in the three control schemes in order to achieve good tracking performances [22].…”

Section: Introductionmentioning

confidence: 99%

Control Schemes for a Quadruple Tank Process

Abdullah

Zribi

2014

INT J COMPUT COMMUN

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This paper deals with the control of a quadruple tank process. A gain scheduling controller, a linear parameter varying controller and an input-output feedback linearization controller are proposed for the quadruple tank process. The derivation of the three control schemes is presented in details. Moreover, the proposed control schemes are implemented using an experimental setup. The experimental results indicate that the developed control schemes work well and are able to regulate the output of the process to its desired value. Additionally, the implementation results demonstrate that the input-output feedback linearization controller gave the best performance.

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“…In fact, in many industrial plants or aerospace systems, only a small number of operating conditions are known and the global nonlinear dynamical system is not known. Gain scheduling methods are widely used and are object of many research papers, (see [1], [2], [3] and references within as example). In this paper, the problem of going from some known local models to a global one will be considered.…”

Section: Introductionmentioning

confidence: 99%

From local to global control

Banks

Tomás-Rodrı́guez

2008

2008 47th IEEE Conference on Decision and Control

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract-In this paper the authors study the problem of the existence of multiple local operating points in control systems. In particular, they consider a method of going from local to global control, i.e. given a number of local, linearized systems, from which global system do they come?, and, can global controllers be determined in this case?. Permanent

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The application of scheduled H/sub infinity / controllers to a VSTOL aircraft

Cited by 193 publications

References 13 publications

RETRACTED: Flexible performance design for the H_∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

RETRACTED: Flexible performance design for the H_∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

Control Schemes for a Quadruple Tank Process

From local to global control

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The application of scheduled H/sub infinity / controllers to a VSTOL aircraft

Cited by 193 publications

References 13 publications

RETRACTED: Flexible performance design for the H∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

RETRACTED: Flexible performance design for the H∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

Control Schemes for a Quadruple Tank Process

From local to global control

Contact Info

Product

Resources

About

RETRACTED: Flexible performance design for the H_∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter

RETRACTED: Flexible performance design for the H_∞ loop-shaping control based on the linear matrix inequality approach: Application to the coaxial rotor helicopter