Instrumentation and Control

Code:

MEMG0011

Acronym:

IC

Keywords
Classification	Keyword
OFICIAL	Technology and Applied Sciences

Instance: 2009/2010 - 1S

Active?	Yes
Responsible unit:	Mining Engineering Department
Course/CS Responsible:	Master in Mining and Geo-Environmental Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
MEMG	11	Plano de estudos oficial a partir de 2008/09	2	-	4	42	108

Teaching language

Portuguese

Objectives

There are five fundamental aims
Knowledge: Recall basic concepts related to the resolution of ordinary differential equations using the Laplace Transform;
Comprehension: Recognize and explain the behavior of simple paradigmatic systems; create models for systems with a typical behavior; to explain the physical foundation of sensors. To know how to select valves adjusted to their function in a closed loop control system.
Application: To recognize model structures and infer the relevant parameters from the experimental behavior;
Analysis: To use the dynamic simulation as a tool for comprehension and action on the process;
Synthesis: To distinguish and elaborate paradigmatic control strategies.
Evaluation: To evaluate the behavior of a control loop and its field of stability.

Program

UNIT I – INTRODUCTION TO CONTROL THEORY: The process, the system and the model. Integral Transforms. External description: Transfer function (or transmittance). Transmittance as the Laplace transform of the impulsional response. Behaviour of systems of 1st order. Non-linear systems and linearization. Systems of 2nd order. The feedback control loop. Stability: algebraic criteria and frequential analysis. Feedforward control. Introduction to MIMO systems: interactions.
UNIT II - INSTRUMENTATION: Alarms. Physical conception of the main sensors: weight, level, flowrate, density, percentage of solids in a pulp, temperature, grain size, composition and acoustic control of grinding intensity. The actuators. The control room and the main equipment (analogical and digital with short reference to pneumatic equipment).
UNIT III - SIMULATION – Utilization of MATLAB and its module for simulation of control systems. Application to the main problems referred in module I.

Teaching methods and learning activities

Unit 1 will occupy 40% of the time required to contents exposition and the other 60% will be to work the other 2 units. It is aimed that the students gets familiar with the fundamental concepts of control theory. They must also understand the physical grounds of the most commonly used sensors, controllers and actuators. In class we’ll exemplify the use of control software: application to one-variable systems, with external description; study of stability.

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Description	Type	Time (hours)	Weight (%)	End date
Attendance (estimated)	Participação presencial	52,00
	Total:	-	0,00

Eligibility for exams

The frequency of all the classes is compulsory for all students, excepting those whose cases are expressly forecasted on the law.
No frequency will be attained by the students that are not regularly enrolled and those who exceed the absence limit that corresponds to 25% of the number of effective classes. The students WITHOUT FREQUENCY by any of the reasons mentioned above are excluded from the final exam.

Calculation formula of final grade

0.55 * Classification Unit I + 0.25 * Classification Unit II + 0.20 * Classification Unit III

Examinations or Special Assignments

SIMULATION – Practical exam done in one single call, at the end of the semester, on the last weeks of classes. The exam will take place in a computer room and the students must solve a set of questions using the appropriate software. Weight on the final classification: 20%.

Classification improvement

Second final examination.