Control Systems and Instrumentation notes KNEC

Introduction:

Engineering control systems are used for the control of physical quantities such as temperature, flow rates, liquid levels, chemical composition, speed of prime movers, position of ships and aircrafts, radar guidance, and machine tool operations.

Control system elements include various physical quantities measuring devices, springs levers, gears, valves, gyroscopes, compressors, accumulators, bellows, motors, resistors, relays, transistors among others. Transducers which convert such quantities into electrical signals are commonly used and the microprocessor is involved in the sophisticated control of medical equipment, engine ignition systems and domestic appliances.

The instructional approach will lay emphasis on demonstration, industrial visits, practical and project work.

TOPICS COVERED:

Temperature Sensors

• and Transducers
• Temperature Sensors and Transducers
• Operation of Temperature Sensors and Transducers
• Test on temperature sensors and transducers
• Assembly of temperature sensors and transducers

Level Sensors and Transducers

• Level Sensors And Transducers
• Operation of level sensors and transducers
• Test on level sensors and transducers
• Assembly and dismantling of level sensors and transducers

Displacement and Proximity Sensors and Transducers

• Displacement And Proximity Sensors and Transducers
• Operation of displacement and proximity sensors and transducers
• Test of displacement and proximity sensors and transducers
• Assembly and dismantling of displacement and proximity sensors and transducers

Viscosity Sensors and Transducers

• viscosity sensors and transducers
• Assembly and dismantling viscosity sensors and transducers

Moisture and Humidity Sensors and Transducers

• Moisture And Humidity Sensors And transducers
• Operation of moisture and humidity sensors and transducers
• Test of moisture and humidity sensors and transducers
• Assembly and dismantling moisture and humidity sensors and transducers

Flow Sensors and Transducers

• Flow sensors and transducers
• Operation of various types of flow sensors and transducers
• Test of flow sensors and transducers
• Assembly of flow sensors and transducers

Pressure Sensors and Transducers

• pressure sensors and transducers
• Application of pressure sensors and transducers
• Test of pressure sensors and transducers
• Assembly of pressure sensors and transducers

Radiation Sensors and Transducers

• Radiation Sensors And transducers
• Pyroelectric
• Application of radiation sensors and
• Test of radiation sensors and transducers
• Assembly of radiation sensors and transducer

Stress and Strain Sensors and Transducers

• Stress and strain sensors and transducers
• Application of stress and strain sensors and transducers
• Test of stress and strain sensors and transducers
• Assembly of stress and strain sensors and transducers

Force Sensors and Transducers

• Force sensors and transducers
• Application of force sensors and transducers
• Test of stress and strain sensors and transducers
• Assembly of stress and strain sensors and transducers

Measuring Instruments

• Types of Measuring Instruments
• Factors Affecting Instruments Selection
• Sources of Error in Measuring Instruments
• Basic Components of An Instrument
• Calibration

Measurement of Physical Variables

• Measurements of Physical Variables

Fundamentals of Control System

• Control system terminology
• Open and Closed loop

Block Diagrams

• Transfer function of systems with feedback
• Block diagram
• Superposition theorem

Signal Flow Graphs

• Conversion of block diagrams to signal flow
• Simplification of complex loops
• Masons rule

System Modelling

• Need for modelling
• Laplace transforms and differential equations of transfer functions
• Transfer functions of simple networks
• Practical systems

Controllers and Control Modes

• Definitions
• Modes of control

Actuators

• Function of an actuator
• Types of actuators

Process Control

• Block diagram of a process loop
• Structural model of a manufacturing process
• Process control strategies
• Distributed versus central control

Sequence Control

• Differences between computer and PLC
• Special Features of PLC
• Architecture of PLCs
• Operation of PLCs
• Applications of PLCs
• Computer Integrated Manufacturing

Digital Control Systems

• Definition of D D.C.
• D D.C. block diagram
• Application of D D.C.
• Components of a D D.C. system
• Supervisory computer control

Servo Systems

• Control of servo system
• Servo amplifiers
• Stepper motor
• Characteristics curves of AC and D.C. servo motors