# Notes for ME 345 — Mechatronics

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## Basic electronics

##### HH Section 1.2: voltage, current, and resistance

- Voltage, current, and resistance
- Voltage dividers
- Voltage and current sources
- Thevenin's and Norton's Theorems
- Source/internal/Thevenin/output equivalent resistance and circuit loading

##### HH Section 1.3: signals

##### HH Section 1.4: capacitors and general circuit analysis

##### HH Section 1.5: inductors and transformers

##### HH Section 1.7: impedance and reactance

##### HH Section 1.8: putting it all together–an AM radio

- You must read this section. No notes will be provided.

##### HH Section 1.9: other passive components

- You must read this section. No notes will be provided.

##### HH Section 1.6: diodes and diode circuits

## Introduction to system dynamics

##### RW Chapter 1: Introduction

##### RW Chapter 2: Energy and power flow in state-determined systems

- Energy and power flow
- Mechanical translational elements (springs, masses, dampers, sources)
- Mechanical rotational elements (rot. springs, masses, dampers, sources)
- Electrical elements (resistors, capacitors, inductors, sources)

## Modeling within each energy domain

##### RW Chapter 3: Summary of one-port primitive elements

- Introduction and generalized through- and across-variables
- Generalization of one-port elements (A-type, T-type, D-type, and sources)

##### RW Chapter 4: Formulation of system models

- Introduction to linear graph models
- Linear graph representations of one-port elements
- Sign conventions for electrical elements
- Sign conventions for mechanical elements
- Element interconnection laws (compatibility and continuity)
- Physical source modeling
- Linear graph models of systems of one-port elements

##### RW Chapter 5: State equation formulation

- State variable system representation
- State and output equations
- Linear graphs and system structural properties
- State equation formulation
- State equation formulation example: translational mechanical system
- State equation formulation example: rotational mechanical system

## Modeling among multiple energy domains

##### RW Chapter 6: Energy-transducing system elements

- Ideal transducers (transformers and gyrators)
- State equation formulation for transducer systems
- Motor constants