A methodology for identification and control of electro-mechanical actuators

Tutunji, Tarek A.; Saleem, Ashraf

doi:10.1016/j.mex.2015.04.001

Cited by 16 publications

(9 citation statements)

References 16 publications

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“…In this control system, the TEC is switched ON as the temperature is more than 25 ºC. Based on the dynamic behavior, resonance frequency of the actuator [5,31] and model identification [32][33][34][35] of actuator, a Proportional-Integral (PI)…”

Section: Resultsmentioning

confidence: 99%

Elimination of thermal instability in precise positioning of Galfenol actuators

et al. 2016

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This paper presents a new method to eliminate deviation in positioning caused by coil's heat generation in magnetostrictive actuators. The advantages of the proposed system are compactness, high controllability and high reliability. The actuator package consists of Galfenol as active element and a magnification mechanism combined with a Peltier element or thermoelectric cooler (TEC). By using the temperature sensor, a thermoelectric cooler (TEC) is activated to reduce the temperature of the coil. However, the reduction of temperature by TEC alone is not enough to eliminate the error and controlling of applied voltage is also required. A simple PI controller for coil's current is combined with TEC and by reducing the temperature and current simultaneously, the positioning error is vanished completely.

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Section: Resultsmentioning

confidence: 99%

Elimination of thermal instability in precise positioning of Galfenol actuators

et al. 2016

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“…In the experimental set‐up, a mixed‐reality environment is used to facilitate the implementation of the proposed gating signal generation technique for the five‐phase LCR. A mixed‐reality environment is an environment where virtual components can be applied onto a real system's components [25]. It offers rapid prototyping and supports easy testing.…”

Section: Experimental Set‐upmentioning

confidence: 99%

Real‐time gating signal generation and performance analysis for fully controlled five‐phase, ten‐pulse, line‐commutated rectifier

Masoud

Saleem

Abri

2018

IET Power Electronics

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Fossil fuel prices and air pollution impel many countries to concentrate on renewable energy sources, of which wind energy is considered to be a pillar. Owing to the numerous advantages when compared with its three-phase counterpart, fivephase direct-drive permanent magnet (PM) generators are a key area of focus in power generation with renewable and wind energy systems. The generator output requires a converter, such as an AC-DC rectifier, to match load requirements. The objective of this work is to generate in real time the gating signals of a fully controlled five-phase, line-commutated rectifier, fed from a five-phase PM generator. A mixed-reality environment is used to implement the gating signal generation algorithm for the five-phase rectifier, where the required gating signals are successfully generated, even with some distorted prototype generator voltage waveforms. The performance of the rectifier is investigated practically and validated by using the MATLAB/SIMULINK platform. Moreover, a comparison with a five-phase pulse-width modulated current source rectifier in terms of losses, size, weight, and cost is presented.

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“…Hardware-In-the-Loop (HIL) test system has been employed in this work for experimental verification. HIL is an environment where software components are working in conjunction with real system components implementing an integrated system (Tutunji and Saleem, 2015). This technique facilitates monitoring the system's behaviour by observing its response using virtual monitoring components.…”

Section: Experimental Verification Through Hardware-in-the-loopmentioning

confidence: 99%

Regional pole placement with saturated control for DC-DC buck converter through Hardware-in-the-Loop

Benzaouia

Soliman

Saleem

2016

Transactions of the Institute of Measurement and Control

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In this paper, the problem of robust stability and tracking of saturated control systems for buck DC-DC converters is considered. Linear Matrix Inequalities (LMIs) are used to insert the constraints in the design phase while imposing positivity in the closed-loop state. The control objective is to design a control law for the converter that limit duty ratio between 0 and 1. This will allow the system to switch between two topologies in the continuous conduction mode (CCM), to achieve a tracking reference condition. This has been developed using uncertain saturated control and regional pole placement techniques. The proposed controller is applied to a real DC-DC buck converter through a Hardware-In-the-Loop (HIL) test system. Experimental and simulation results show the effectiveness and the success of the proposed controller in tracking a reference voltage with limiting the duty ratio between 0 and 1. Results also show that the proposed controller performed better than the conventional one.

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A methodology for identification and control of electro-mechanical actuators

Abstract: Graphical abstract

Cited by 16 publications

References 16 publications

Elimination of thermal instability in precise positioning of Galfenol actuators

Elimination of thermal instability in precise positioning of Galfenol actuators

Real‐time gating signal generation and performance analysis for fully controlled five‐phase, ten‐pulse, line‐commutated rectifier

Regional pole placement with saturated control for DC-DC buck converter through Hardware-in-the-Loop

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