Industrial Electronics ELEX 4320

SAFETY, SHOCK HAZARD AND GROUNDING

• Test and verify that electrical equipment is safely and effectively grounded.
• Identify key factors affecting the severity of electric shock hazards.
• Draw the schematic for a three-wire electrical service to a residence.
• Explain the significance of hot, neutral and ground conductors in an electrical service.
• Identify and explain the principles of operation of Ground Fault Circuit Interrupters.

POWER SUPPLIES - LINEAR

• Design, construct and test common power supplies for a wide variety of industrial applications.
• Identify the advantages of switching vs. linear power supplies.
• Design L and L-C filtered rectifier power supplies.
• Recognize normal waveforms in linear power supplies.
• Calculate RMS values for waveforms in linear power supplies.

POWER SUPPLIES - SWITCHING

• Design, construct and test various switching power supplies.
• Draw the schematics for series, shunt and flyback switching power supplier.
• Design series, shunt, flyback switching power supplies.
• Recognize normal waveforms in switching power supplies.
• Identify and implement speed-up circuitry for bipolar and MOSFET transistor switches.

THYRISTOR POWER CIRCUITS

• Design DC switching and AC power control systems.
• Select the appropriate thyristor device for a given switching application of SCRs and TRIACs.
• Describe the turn on and turn off characteristics of SCRs and TRIACs.
• Describe with the aid of schematics the operation of solid state switches.
• Design suitable L-C filters for SCR power supplies.
• Design a TRIAC AC power control circuit.

PARTS OF A FEEDBACK SYSTEM.

• Identify the parts of a feedback system
• Identify the forward path.
• Identify the feedback path.
• Identify the comparator.
• Given a physical description, identify the blocks.
• Construct a block diagram of the system.

SYSTEM MODELLING

• Use transfer functions to model feedback systems
• Derive the transfer function for each system block.
• Understand the significance of mathematical modeling of system components.
• Understand and use current driven permanent magnet DC motor transfer functions.
• Understand and use voltage driven permanent magnet DC motor transfer functions.
• Derive and apply gearbox transfer functions.
• Derive and apply electrical network transfer functions.
• Derive and apply the transfer function of a given simple mechanical system.
• Derive the transfer function of the entire system.
• Set up the system transfer function in standard form.
• Understand the significance of the properties of first and second order transfer functions.

STABILITY OF FEEDBACK SYSTEMS

• Recognize the basic stability problem and its cause.
• Recognize there is always time delay in a feedback loop.
• Recognize the consequences of this for system stability.
• Understand and apply the concept of phase margin to stability analysis.

SYSTEM STEP AND FREQUENCY RESPONSE

• Compute the step response and frequency response for a feedback system.
• Use the concepts of over, under and critical damping.
• Use the concepts of natural frequency, damped frequency, damping ratio.
• Use software to evaluate the system step response and frequency response.

CONTINUOUS TIME CONTROLLER DESIGN.

• Design analog compensators.
• Design and test leadlag controllers.
• Design and test PID controllers.
• Understand and apply the Ziegler Nichols tuning method.

BASICS OF DISCRETE TIME CONTROL SYSTEMS.

• Draw a block diagram of a basic digital control system and recognize the significance of each part.
• Describe the action of the shaft encoder, pulse counter, system clock, digital compensator, ADC and DAC.
• Explain the advantages of a digital control system.
• Recognize that compensator transfer functions can be realized in software.
• Recognize that the parameters of a digital system are readily changed via software changes.
• Understand the sampling process and the significance of the Nyquist limit.

DISCRETE TIME CONTROLLER DESIGN

• Analyze and design systems consisting of a mixture of analog and digital components.
• Appreciate the dilemma in analyzing systems consisting of both discrete and continuous time components and the need to perform either s-plane or z-plane analysis.
• Design compensators using the equivalent continuous method.
• Transform s-plane transfer functions to the z-plane using various mapping techniques.

DISCRETE TIME SYSTEM IMPLEMENTATION AND TESTING

• Code and test digital controller for a servo system.
• Design a suitable s-plane controller to stabilize a motor control system.
• Map this into the z-plane.
• Write DSP code to implement the controller.
• Implement the controller using a small microcontroller chip.
• Set up and test the entire digital control system.

Effective as of Winter 2005