Experiments

ECEN 2270 Spring 2014

Five multi-part lab experiments and a final project will be performed during the course. Each of these will be performed by a group of two students. Please submit finished work to the D2L dropbox before the deadline. Each experiment will require a live demo in lab and have an accompanying written report and in class quiz.

Please follow these guidelines while writing your lab reports.

Lab 1: Introduction to design, simulations, prototyping and testing of electronic circuits

Objectives: develop laboratory and circuit design skills and techniques, perform simulations, prototyping and testing

  • Setting up and operating laboratory equipment
  • Reverse engineering electronic circuits, being able to recognize and use circuit components, read data sheets, and draw circuit diagrams
  • Designing pulse generation circuits and amplifiers
  • Performing design verification by circuit simulations and experiments
  • Demonstrating and explaining circuit designs and hardware
  • Preparation of written laboratory reports

Tasks

  • Part A: Working with lab equipment
  • Part B: Circuit diagrams, simulation, prototyping and circuit testing

Lectures

Quiz

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Lab 2: Robot DC motor characteristics and speed measurement

Objectives: model characteristics of a DC motor, design a speed sensor cirucit

  • DC motor characteristics
  • Modeling based on experiments
  • Design of pulse-generation circuits, first-order high-pass and and low-pass filters
  • Performing design verification by circuit simulations and experiments
  • Preparation of written laboratory reports

Tasks

Lectures

Quiz

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Lab 3: Robot DC motor driver and speed control circuit design

Objectives: design, simulate, construct and test DC motor driver and speed controller

  • Circuit design with bipolar junction transistors, power, current and thermal considerations
  • Introduction to feedback concepts, open-loop and closed-loop transfer functions, integral compensator
  • Performing design verification by circuit simulations and experiments
  • Preparation of written laboratory reports

Tasks

  • Part A: DC motor driver circuit
    • Intro to soldering video
    • In LTspice simulations you can use npn transistor FZT849 and pnp transistor 2N2905A. These transistors have characteristics that are similar to the characteristics of the transistors used in the motor driver experiments.
  • Part B: Closed-loop speed control circuit

Lectures

Quiz

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Lab 4: Robot speed and position control using a microcontroller

Objectives: design, program, construct and test DC motor speed and position controls using a microcontroller

  • Introduction to embedded microcontroller programming, analog and digital interfaces
  • Position control, incremental encoders and interrupts
  • Project floorplanning, and circuit debugging
  • Preparation of written laboratory reports

Tasks

Lectures

Quiz

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Lab 5: Remote control design

Objectives: design, construct and test a fully functional robot with wireless on/off and speed control

  • Circuit and system construction, testing, debugging
  • Wireless control, frequency division, bandpass filter design, pulse-width modulation, DC level shifting and amplification
  • Approaching complex systems by dividing the system into simpler circuits that can be designed and tested separately

Tasks

Lectures

Quiz

  • No practice quiz: study details of the wireless control circuit (level-shift, PWM, transmitter and receiver, bandpass filter, peak detector)

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Lab 6: Final Project

Objectives: design, construct and test a fully functional robot with wireless on/off and speed control

  • Independent design of a system component: oral and written proposal, circuit design, embedded programming, construction, testing and system integration
  • Project demonstration and project documentation

Lectures

Tasks

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