Fuzzy-PID Controller Design for Random Vibration Attenuated Smart Cantilever Timoshenko Beam based on MOGA

  • سال انتشار: 1396
  • محل انتشار: سومین کنفرانس بین المللی پژوهش در علوم و مهندسی
  • کد COI اختصاصی: ICRSIE03_017
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 645
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نویسندگان

M Hasanlu

Department of Mechanical Engineering, Faculty of Engineering, University of Guilan, P.O. Box ۳۷۵۶, Rasht, Iran

M Siavashi

Department of Mechanical Engineering, Faculty of Engineering, University of Guilan, P.O. Box ۳۷۵۶, Rasht, Iran

M Soltanshah

Faculty of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran

M Zamanian

Department of Mechanical Engineering, Faculty of Engineering, Kharazmi University, Tehran, Iran.

چکیده

Today, vibration control of continuous systems that is also referred as structure has been remarkably developed. Due to varied application of structures such as beam, plate, shell, panel, truss, etc., engineers have faced with new and more complex challenges in order to control these structures for their own purposes. The life of an engineering structure in each industry is a major factor for maintenance of equipment. The life of engineering structures reduces due to vibration amplitude or the design for mechanical system can be far from the goals of designers. In this study, a thin cantilever Timoshenko beam has been considered. A smart structure model has been designed using PID controller combined with fuzzy logic for vibration attenuation. Here, PID controller has been used in order to control the structure. In this controller there are three unknown coefficients in Kp, Ki and Kd matrices using multi-objective genetic algorithm for or MOGA, and the unknown coefficients are determined as result of searching this algorithm during the beam in order to determine an optimal point or points of beam to place sensor and piezoelectric actuator in the top and down for the structural suppression at the least possible time. Vibration beam model is based on finite element numerical method. It has been embedded on the beam regarding the piezoelectric direct and inverse property as the sensor and actuator in order to be a factor of active control for attenuation of transverse displacement.

کلیدواژه ها

vibration attenuation, cantilever Timoshenko beam, Fuzzy-PID controller, piezoelectric, Genetic Algorithm

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