CCMAS Course Search

Introduction to control system: Concept of feedback and Automatic control, Effects of feedback, Objectives of control system, Definition of linear and nonlinear systems, Elementary concepts of sensitivity and robustness. Types of control systems, Servomechanisms and regulators, examples of feedback control systems. Transfer function concept. Pole and Zeroes of a transfer function. Properties of Transfer function. Mathematical modelling of dynamic systems: Translational systems, Rotational systems, Mechanical coupling, Liquid level systems, Electrical analogy of Spring– MassDashpot system. Block diagram representation of control systems. Block diagram algebra. Signal flow graph. Mason’s gain formula. Control system components: Potentiometer, Synchros, Resolvers, Position encoders. DC and AC tachogenerators. Actuators. Block diagram level description of feedback control systems for position control, speed control of DC motors, temperature control, liquid level control, voltage control of an Alternator. Time domain analysis: Time domain analysis of a standard second order closed loop system. Concept of undamped natural frequency, damping, overshoot, rise time and settling time. Dependence of time domain performance parameters on natural frequency and damping ratio. Step and Impulse response of first and second order systems. Effects of Pole and Zeros on transient response. Stability by pole location. Routh Hurwitz criteria and applications. Error Analysis: Steady state errors in control systems due to step, ramp and parabolic inputs. Concepts of system types and error constants. Stability Analysis: Root locus techniques, construction of Root Loci for simple systems. Effects of gain on the movement of Pole and Zeros. Frequency domain analysis of linear system: Bode plots, Polar plots, Nichol’s chart, Concept of resonance frequency of peak magnification. Nyquist criteria, measure of relative stability, phase and gain margin. Determination of margins in Bode plot. Nichol’s chart. circle and Contours in Nichols chart. Control System performance measures: Improvement of system performance through compensation. Lead, Lag and Lea lag compensation, PI, PD and PID control.

Feedback concept, advantages, system classification, structures; Control system components - mechanical, electronic hydraulic, thermal, position control; Transient analysis of servo- mechanism, signal regulators compensation techniques; Series/parallel feedback controllers. System transfer functions, signal flow graphs, stability, Routh-Hurwitz criteria.

Basic concepts and examples of control systems; Feedback, Time response analysis, concept of stability, Routh-Hurwitz criterion; Root-locus techniques, Frequency-response analysis, Polar and Bode plots, Nyquist stability criteria. Nichol’s chart, compensation techniques; introduction to non-linear systems.

Introduction to optimum systems control problems in engineering. Calculus of extrema and single-stage decision processes. State estimation techniques and design of linear filters. Vibrational calculus and continuous optimal control. Design of Linear Quadratic Regulators; the minimum time, minimum fuel, and minimum energy control policies. The maximum principle and Hamilton Jacobi theory. Applied optimum systems control examples.

Dynamic systems. Time domain and frequency domain modelling and response analysis of linear control systems. State Space representations, the exponential matrix and transfer functions. Detailed time response analysis of linear second order control systems. Routh’s method for determination of BIBO stability of linear control systems. Steady State Error Analysis and Design of Feedback Control Systems. Discrete time analysis for digital control systems. 400 Level GET 402 Engineering Project I (2 Units: C; PH 90) Learning Outcomes At the end of this course, the students should be able to: 1. Complete the design phase of a complex engineering problem sourced from industry or community during the SIWES III programme. 2. Demonstrate the connection between engineering product-making and the theoretical courses they have learned following the applicable industry best practices. Course Contents In the second semester of the 400-level students, preferably in groups, work from the university on the identified industry or organization to tackle industry complex engineering problems. Theoretical issues may be provided by the department faculty or industry experts. During the vacation, students will now work full time with the organisation/industry on the project as part of the SIWES III. The students can also go beyond the department and engage in multidisciplinary undertakings. Literature survey, review of existing systems etc. must be achieved to a satisfactory extent. GET 404 Engineering Valuation and Appraisal (2 Units: C; LH 30) Learning Outcomes At the end of this course, the students should be able to: 1. Identify at least three (3) objectives of engineering valuation work, valuer's primary duty and responsibility and valuation terminologies. 2. Describe at least four (4) Valuer's obligation to his or her client, to other valuers, and to the society. 3. Demonstrate with example the engineering valuation methods, valuation standards, and practices. 4. Prepare engineering valuation and appraisal reports and review 5. Discuss expert witnessing and ethics in valuation. 6. Determine price, cost, value, depreciation and obsolescence in real property, personal property, personal property, machinery and equipment, oil, gas, mines, and quarries valuation.

Theories, principles/mechanisms of operation, calculations with necessary examples and design features of machineries which underpin the following operations in food industries: Conversion operations including size reduction. Mixing. Emulsification. Homogenization. Ancillary operations including: Plant sanitation and hygiene. Water and waste water treatment. Solid waste disposal. Food waste and management. Hygienic design. Material handling of liquid and solid foods in food industry. Concepts in energy utilization in food processing (steam generation, fuel utilization, electric power utilization). Energy mix in food industries. Prospects of renewable energy in food industries.

Two view points on corrosion: extractive metallurgy in reverse and electrochemical degradation of materials which is within the purview of physical metallurgy and electrochemistry; socio-economic implications of corrosion and need to prevent it; emphasis on the thermodynamics and kinetics of electrochemical corrosion of metals and alloys; description of metallurgical factors, effect of applied stress corrosion, cracking corrosion fatigue and passivity; methods of corrosion control and prevention including alloy selection, inhibitors, anodic and cathodic protection, coating and electroplating.

The course is aimed at investigating the underlying fundamental causes of corrosion problems and failures. Emphasis is placed on the electrochemical reactions occurring and the tools and knowledge necessary for predicting corrosion, measuring corrosion rates, and combining these with prevention and materials selection.

Review of electrochemistry: Electrochemical basis of corrosion; electrode potentials, etc. Basic principles of corrosion: definition; classification; mechanisms and factors affecting corrosion, types of corrosion, de-alloying (dezincification). Hydrogen damage, corrosion fatigue etc. Concept of polarization (over potentials): activation, concentration (transport); and resistance polarisation. Passivity/Passivation and Potential-pH (Pourbaix) diagram. High temperature oxidation (mechanism of oxidation, oxidation laws and Pilling-Bedworth ratio). Case studies: corrosion of steel in the atmospheres, waters, and some chemicals, rebar corrosion, microbial corrosion, corrosion in oil and gas environment e.g., sweet and sour corrosion and corrosion of metals and alloys in high temperature gases and salts. Pre-requisite: MAE 302. 500 Level

Classification and ecology of crops in Nigeria. Nutrient requirements and mineral nutrition of plants. Manures and fertilizers. Plant growth and development. Growth stages. Tillage and weed control. Other cultural practices. Cropping sequences and rotation. Farming systems. Production practices for specified crops. Conservation agriculture and sustainability in tropical agriculture.