Robust optimization of the inertially stabilized platforms

Sushchenko, Olha; Tunik, A. A.

doi:10.1109/msnmc.2012.6475102

Cited by 14 publications

(6 citation statements)

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“…In addition, in hot rolling mills, loopers electric drives are used to control by strip tension. The strip tension is controlled by a simultaneous change the looper elevation angle and a coordinated change of the rolls rates of the previous and subsequent stands [6][7][8][9]. By means of front and rear winders, the specified strip tension at the inlet and outlet of the rolling mill is controlled.…”

Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

“…In the multi-criteria game (15) the first player is the vector X of the desired regulators parameters, and its strategy is the minimization of the vector gain, and the second player is a parametric external influences vectors  and the strategy of this player is maximization of the same vector gain [6], [7] and [12].…”

Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

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Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Kuznetsov

Nikitina

Bovdui

2020

Electrical Engineering &Amp; Electromechanics

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Aim. Improving of control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters based on structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric uncertainty. Methodology. The method of structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric uncertainty which improves control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters is developed. The method based on the multi-criteria game decision in which payoff vectors are dispersions of longitudinal thickness and tension of the rolled. The calculation of the payoff vector associated with modeling of the synthesized system with different input signals and for various values of the plant parameters for various modes of operation of the system. The multi criterion game solution is calculated based on particles multiswarm optimization algorithms. Results. The results of the structural-parametric synthesis of robust control by 740 three-stand cold rolling mills multi-motor electric drives are presented. Comparisons of the strip thickness and tension accuracy of the synthesized robust system with the existing system are completed. It is showed that the use of synthesized robust controllers allowed to improve strip thickness and tension accuracy and reduce the sensitivity of the system to changes of plant parameters in comparison with the existing system. Originality. For the first time the method of structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric uncertainty based on multi-criteria game decision and particles multiswarm optimization algorithms to improve the control accuracy by rolling strip thickness and tension and to reduce of sensitivity to changes of plant parameters is developed. Practical value. Practical recommendations on reasonable choice of the structure and parameters of robust control by 740 three-stand cold rolling mills multi-motor electric drives to improving of control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters are given. References 20, figures 2.

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Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Kuznetsov

Nikitina

Bovdui

2020

Electrical Engineering &Amp; Electromechanics

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“…Moreover, a backstepping sliding mode controller with an adaptive neural networks approach was designed in [7], and a super-twisting sliding mode controller (STSMC) was introduced in [10]. On the other hand, robust control theory was applied in [8,11] and several other studies. Especially, the study in [8] introduced a new robust double active control scheme for a two-axis gimbal system, where an inner active compensator was combined with a feedback controller designed based on H ∞ framework.…”

Section: Introductionmentioning

confidence: 99%

A Nonlinear Backstepping Controller Design for High-Precision Tracking Applications with Input-Delay Gimbal Systems

Park

Chakir

Kim

et al. 2021

JMSE

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This paper proposes a novel nonlinear control approach for a two-axis gimbal to achieve accurate real-time tracking performance in maritime surveillance applications. For this objective, the control system must overcome system complexities and limitations, including nonlinear dynamics, coupled Euler angle-based measurements, and delay time constraints. The nonlinear backstepping controller was designed, taking into consideration the nonlinearities and system couplings to preserve the system stability. Then, an extra backstep was incorporated to minimize the control errors due to the delay time. The proposed control scheme enhances the tracking performances and expands the system’s bandwidth, which is validated in the simulations and experimental studies in comparison with a super-twisting sliding mode controller introduced in a previous study.

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“…The gimbal itself is a simple structure, but its dynamics are complex with nonlinear factors, coupling, and external disturbances, especially the vehicle motion [5]- [9]. Therefore, popular control schemes for the system are H∞ [10], [11], sliding mode [12]- [14], or active disturbance rejection [15], thanks to their robustness when facing disturbances.…”

Section: Introductionmentioning

confidence: 99%

Design of Robust Fault-Tolerant Control for Target Tracking System With Input Delay and Sensor Fault

Huynh

Kim

2021

IEEE Access

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This paper presents a robust fault-tolerant control scheme that provides reliable tracking and effective disturbance rejection for a low-cost tracking system. As the controlled apparatus, a 2-axis gimbaled mechanism is involved in a networked control system, and an unreliable sensor brings sensor drift into the system. Besides, external disturbances heavily affect the system in practical applications. Representation of the faulty gimbal system with its constraints and disturbances is firstly introduced. Then, the designed fault-tolerant controller consists of two components: (1) an unknown input observer estimates simultaneously information on the fault and effect of disturbances and networked delay, and (2) a robust control law, using the observer estimations, is based on the combination of the super-twisting algorithm, backstepping procedure, and integral sliding mode control technique. Subsequently, simulations and experiments are conducted, in which the performance of the proposed control system is compared to those from the previous studies. The results show the superiority and reliability of the proposed control system.INDEX TERMS Fault tolerant control, target tracking system, time-varying delay, unknown input observer, sensor drift, integral sliding mode control.

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Robust optimization of the inertially stabilized platforms

Cited by 14 publications

References 0 publications

Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

A Nonlinear Backstepping Controller Design for High-Precision Tracking Applications with Input-Delay Gimbal Systems

Design of Robust Fault-Tolerant Control for Target Tracking System With Input Delay and Sensor Fault

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