436-206 Electro-Mechanical Machine Behaviour

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Objectives:

On completion students should:

• be familiar with the concepts and terminology of electrical power engineering;

• be able to describe the construction of common electrical and mechanical power sources;

• understand the operating characteristics of common electrical and mechanical devices used for motive power;

• be able to construct time and frequency - domain models of simple electrical, mechanical, pneumatic and hydraulic engineering components and systems;

• be able to compute time-and frequency-domain responses of linear dynamical systems.

Content:

Electric power systems: d. c. and a. c. power supplies and distribution systems; inverters, transformers and rectifiers; principles and operation of single and multi-phase a. c. machines, induction motors, and d. c. machines; solid-state control of machines.

Mechanical power systems: Principles and operation of electro-hydraulic and electro-pneumatic servo valves and actuators.

System modelling: Unified approach to modelling electrical, mechanical and thermal systems: 'across' and 'through' variables; equilibrium, constraint and constitutive equations; block diagrams, transfer function and state-space representations.

System responses: Computation of transient and steady-state time responses and harmonic frequency responses; Bode plots. Relationship between response characteristics and pole-zero locations. Use of Matlab for system response calculations.

Assessment: