نویسندگان

چکیده

شبیه‌ساز زیرسیستم کنترل وضعیت ماهواره یک سیستم آزمایشگاهی است که به‌منظور توسعه و تست الگوریتم‌های مختلف کنترلی در یک محیط با ریسک و هزینة پایین طراحی شده است. این سیستم آزمایشگاهی قادر است تا شرایط واقعی ماهوارة چابک در فضا را با دقت بسیار خوبی در روی زمین ایجاد کند. شبیه‌ساز توسعه داده شده از چهار بخش‌ مهم سیستم تأمین توان، سیستم کنترل آن‌بورد، نگهدارندة شبیه‌ساز و کامپیوتر زمینی تشکیل شده است. سیستم کنترل آن‌بورد شامل یک کامپیوتر صنعتی، چهار عملگر ژایروی کنترل ممان تک‌جیمبال و یک حسگر تعیین وضعیت است. نگهدارندة شبیه‌ساز شامل یک صفحه پلتفرم به‌منظور نصب تجهیزات، یاتاقان هوایی نیم‌کروی و پایه است. ارتباط بین کامپیوتر زمینی و شبیه‌ساز به‌صورت بی‌سیم فراهم شده است. در این مقاله، ابتدا مراحل طراحی، ساخت و تست شبیه‌ساز ارائه شده و سپس به منظور تست آن، نتایج پیاده‌سازی الگوریتم‌ کنترلی PID بر اساس زوایای اویلر و نیز فیدبک کواترنیون به همراه نتایج شبیه‌سازیارائه می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Design, Manufacturing and Test of a Three Degrees-of-Freedom Attitude Control Simulator for an Agile Micro-Satellite Based on Single Gimbal Control Moment Gyros

نویسندگان [English]

  • A.R. Aghalari
  • A. Kalhor
  • S. M. M. Dehghan
  • S. H. Cheheltani

چکیده [English]

The Agile Satellite Attitude Control System Simulator (ASACSS) is a laboratory system designed for the purpose of developing and testing attitude control algorithms in a low-risk, low-cost environment. In this paper, the design and development of the ASACSS is described, including hardware and software. There are many papers that present a new mathematical technique or prove a new theory, but this study presents the design and development of a new experimental system. This simulator consists of four main components: 1) power supply system 2) on-board control system 3) supporting equipments and 4) monitoring computer. On-board control system includes a industrial computer, four single gimbal control moment gyros and a sensor for attitude determination. Supporting equipments include a platform for installing simulator subsystems, a semi-spherical air bearing and a pedestal. A high-speed wireless LAN connection enables remote command initiation, monitoring and data collection for post-experimental analysis. In this paper, The design and construction process of the simulator are described. More over some experimental results presented from the application of a simple PID attitude controller on the spacecraft simulator. Finally, experimental results are compared with those obtained from simulation.

کلیدواژه‌ها [English]

  • simulator
  • Agile satellite
  • Attitude control
  • Single
  • gimbal control moment gyro
  • Air bearing
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