02 آبان 1400
ولي اله غفاري

ولی اله غفاری

مرتبه علمی: دانشیار
نشانی: دانشکده مهندسی سیستم های هوشمند و علوم داده - گروه مهندسی برق
تحصیلات: دکترای تخصصی / مهندسی برق گرایش کنترل
تلفن: 07733442269
دانشکده: دانشکده مهندسی سیستم های هوشمند و علوم داده

مشخصات پژوهش

عنوان
طراحی قانون هدایت بهبود یافته در یک مساله هدایت دو بعدی با در نظر گرفتن دینامیک سنسور و عملگر
نوع پژوهش پارسا
کلیدواژه‌ها
line of sight angle, Proportional guidance, Closing velocity, Sensor and actuator dynamic, Time delay
پژوهشگران علی یوسف پور (دانشجو) ، ولی اله غفاری (استاد راهنما)

چکیده

This thesis mainly concerns on designing of modified guidance law in a two-dimensional guidance system with considering of sensor and actuator dynamic. Utilizing a first-order dynamic model is the most common way to describe the sensors and actuators in the guidance problems‎. The guidance system stability would be disturbed if the sensor and/or actuator are added to the closed-loop system. ‎So it is evident that the expected performance would not be achieved if the sensor and actuator dynamics are considered‎. Furthermore, in a typical guidance problem, ‎the actuators and sensors would have some unmolded dynamics‎. Hence, ‎in this study‎, ‎a first-order and high-order transfer functions will be taken into account for the actuator‎. ‎Then, the proportional navigation (PN) guidance law would be modified via the back-stepping idea. Similarly, a first-order transfer function plus time-delay is used for the sensor in such a guidance system‎. ‎Then, the PN guidance law is modified using the time-delay approximation technique‎. Therefore, first, the PN guidance algorithm is evaluated in presence of senseor and actuator dynamic. Thus‎, ‎the PN guidance law will be corrected in such a way that the actuator and the sensor effect is compensated on the closed-loop performance‎. ‎Finally‎, ‎to demonstrate the effectiveness of the proposed method‎s, ‎the results are simulated in some guidance examples‎.