نوع مقاله : مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

1 دانشگاه صنعتی مالک اشتر.تهران، ایران

2 دانشگاه صنعتی مالک اشتر، تهران، ایران

3 دانشکده مهندسی برق، دانشگاه صنعتی مالک اشتر، تهران، ایران

چکیده

در این مقاله هدایت مد لغزشی نهایی غیر سینگولار برای برخورد با زاویه خط دید مطلوب در فاز نهایی پیشنهاد شده است. به منظور دستیابی به زاویه خط دید از پیش تعریف شده و برخورد با هدف، یک متغیر لغزش نهایی غیر سینگولار تعریف شده است. در فاز رسیدن در حضور نامعینی­هایی از قبیل مانورهای هدف، هدایت مد لغزشی نهایی غیر سینگولار برای صفر کردن متغیر لغزش در مدت زمان رسیدن محدود طراحی شده است. سپس در فاز لغزش به دلیل تعریف متغیر لغزش به صورت نهایی غیرسینگولار، پایداری زمان محدود خط دید و نرخ چرخش خط دید بدون رخ دادن سینگولاریتی در دستور شتاب به عنوان سیگنال کنترل تضمین می­شود. نتایج شبیه‌سازی عددی برای نشان دادن پتانسیل قانون هدایت پیشنهادی ارائه شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Finite Time Guidance Law to Intercept Desired LOS Angle Using NTSM Control

نویسندگان [English]

  • Vahid Behnamgol 1
  • Ahmadreza Vali 2
  • ali mohammadi 3

1 Department of MalekAshtar University of Technology.Tehran.IRAN

2 Department of Malek Ashtar University of Technology.Tehran.IRAN

3 Department of Electrical Engineering, Malek Ashtar University of Technology, Tehran, Iran

چکیده [English]

Nonsingular terminal sliding mode (NTSM) guidance for intercepting the desired line of sight (LOS) angle in terminal phase is proposed in this paper. In order to satisfy the predefined LOS angle and to intercep into target, a nonsingular terminal sliding variable is introduced. In reaching phase, in the presence of uncertainties such as target maneuvers, robust NTSM guidance law is designed in order forzeroing the sliding variable in finite reaching time. Then, in sliding phase, due to introducing nonsingular terminal sliding variable, finite time stability of line of sight angle and line of sight angular rate is granteed without singularity in commanded acceleration as control signal Numerical simulations are presented to illustrate the potential of the proposed guidance law.

کلیدواژه‌ها [English]

  • Guidance law
  • Impact angle
  • NTSM control
  • Parallel navigation
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