CONTROL AND INSTRUMENTATION

These tutorials are designed for students studying Control Systems and Instrumentation Systems in general but specifically for those studying the Engineering Council Exam D227 - Control Systems Engineering.

 

 

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INSTRUMENT SYSTEMS

Basic Science, displacement, velocity and acceleration.

Newton’s Second Law of Motion.

Springs, Pressure and flow.

Resistance, current, capacitance and inductance, resistivity and temperature coefficient of resistance.

Stress and strain. 

Basic measurement system.

Sensors - Temperature, pressure ,speed, flow meters, force gauges, displacement gauges, level (depth) gauges, strain gauges.

 

Basic measurement system, Signal receivers, signals and their conversion, signal processors and conditioners, Analogue/Digital processing.

 

Model of a basic instrument system, input and output, errors that occur in instrument systems, principles of calibration, primary and secondary standards.

PROGRAMMABLE LOGIC CONTROLLERS

This is a stand alone module for the Edexcel HNC/D Module Programmable Logic Controllers

OUTCOME 1 - Investigate the design and operational characteristics of PLC systems

OUTCOME 2 - Information and communication techniques.

OUTCOME 3 - Programming techniques.

Model Assignments.

 

Control Systems Engineering - D227

 

Models - mechanical, Thermal, Fluid, Electrical, Analogues.

ELECTRIC ACTUATORS - AC, DC, Stepper, Servo, Starting Heavy Motors.

TRANSFER FUNCTION MANIPULATION - Open/Closed Loop, Disturbances, Proportional and Derivative Feedback.

SYSTEM RESPONSE - On/Off, 1st and 2nd order, linear system, step change, ramp (velocity), sinusoidal. Laplace transforms and partial fractions.

SINUSOIDAL RESPONSE - Fourier transform, polar plots for 1st and 2nd Order Systems.

STABILITY - Nyquist diagrams, Routh-Hurwitz criteria, Gain and Phase margins, Bode plots, Root Locus Diagram

MODELLING TO DEFINED PARAMETERS - Nichol's chart, link between open and closed loop gain.

DIGITAL SYSTEMS - Proportional, Integral and Differential (PID), Incremental control, Sampling, z transform.

HYDRAULIC/PNEUMATIC - Valve stability analysis - 3 tutorials

You will also find material of interest  designers of hydraulic and pneumatic systems under FLUID POWER