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Closed-Loop control system - Control Systems - Exam

Exams, Control Systems

Post: March 30th, 2013
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Main points of this past exam are: Closed-Loop Control System, Open-Loop System, Differential Equation, Domestic Central Heating, Electric, Transfer Function, Time-Constant
Main points of this past exam are: Closed-Loop Control System, Open-Loop System, Differential Equation, Domestic Central Heating, Electric, Transfer Function, Time-Constant
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Cork Institute of Technology Bachelor of Engineering (Honours) in Electronic Engineering - Stage 3 (EELXE_8_Y3) Autumn 2008 CONTROL SYSTEMS (Time: 3 Hours) INSTRUCTIONS: Answer any FOUR questions. Each question is worth 25 marks. You MUST include a list of all MATLAB commands or Simulink diagrams used to answer a question. Marks will be lost if you fail to do this. Examiners: Dr. T O' Mahony Prof. G. Hurley Dr. S. Foley Q1. (a) In your own words clearly explain the difference between an open-loop control system and a closed-loop control system. Include a block diagram illustrating the difference between an open-loop system and a closed-loop system. Give one example of an open-loop system and one example of a closed-loop system. [5 marks] (b) The thermal response of a domestic central heating system is defined by the differential equation dT (t ) + 0.003T (t ) = 0.02U (t ) dt where T(t) is the building temperature and U(t) is the input signal that switches on/off the electric/gas ..

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