طراحی رویتگر رخداد-تحریک در سیستم‌های غیرخطی تحت شبکه

نویسنده

گروه مهندسی برق - دانشکده مهندسی- دانشگاه کردستان

چکیده

در این مقاله، با استفاده از روش طراحی معادلات ریکاتی وابسته به حالت (SDRE)، روشی جدید جهت طراحی رویتگر غیرخطی رخداد-تحریک در کلاس وسیعی از سیستم‌های کنترل تحت شبکه ارائه می‌شود. برای این منظور، یک شرط نامساوی جهت تشخیص زمان لازم ارسال اطلاعات از حسگرها به کنترل‌کننده به‌دست می‌آید که با بررسی این شرط، ارسال اطلاعات تنها در برخی از زمان‌ها لازم بوده و لذا نرخ استفاده از شبکه کاهش می‌یابد. همگرایی تخمین حاصل از رویتگر به حالت سیستم از قالب یک قضیه بررسی و کارایی روش پیشنهادی از طریق دو مثال (نوسان‌ساز وندرپل و سیستم سه تانک) ارزیابی شده است.

کلیدواژه‌ها


عنوان مقاله [English]

Event-triggered Observer Design for Nonlinear Networked Control Systems

نویسنده [English]

  • Y. Batmani
Department of Electrical Engineering, University of Kurdistan, Sanandaj, Iran
چکیده [English]

In this paper, based on the state-dependent Riccati equation (SDRE) technique, a new method is proposed to design nonlinear observers in a  broadclass of networked control systems. Towards this end, an inequality condition is obtained to detect the time-instants of sending messages from the sensors to the controller. In this way, the data transmission is done in some specific instants and therefore, the proposed method can considerably reduce the information exchange between the sensors and the controller in a nonlinear networked control system. It is also proved that the obtained estimation converges to the system state. Two numerical simulations are worked to illustrate the design procedure and the flexibility of the proposed observer.

کلیدواژه‌ها [English]

  • Nonlinear systems
  • event-triggered
  • networked control systems
  • SDRE observer
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