
ME
360/390: VSDC  Course Log for Spring 2016  Last updated 5/3/16THE CONTENTS BELOW WILL BE UPDATED IN SPRING 2016
Week
1
 Lecture 1 (Tu, 1/19)  last updated 1/19/16
 Course Introduction  01 Intro/Overview slides
 Animations from slides:
 split mu
 animation from CarSim simulation; illustrates loss of yaw stability
due to lock up of rear wheels during braking on a split mu (friction)
road
 icy yaw instabilities  video demonstrating loss of yaw stability by vehicles on icy bridge
 big air  animation from CarSim simulation; extreme vertical vehicle dynamics with loss of contact
 rover  bus
 two different animations of ADAMS simulations of multibody vehicles;
rover was a demo from MSC of a small robotic vehicle; the bus animation
is for a model of a bus that has a 'tag axle', studied to evaluate tax
axle influence on stability of steering
 Review course syllabus, prerequisites, course materials, and homework and project requirements
 Review problems in dynamics with solutions
 these are some selected problems from Meriam and Kraige. This
is where we will begin next time, but show how these types of problems
might be worked so we can build model simulations, solve for motion
over time. Here is the relevant chapter discussion related to those problems.
Week
2
Week 3 
Week
4 
 Lecture 7 (Tu, 2/9)
 Recap relevant parts from Thursday's discussion, since so many of you missed that day.
 models for longitudinal and lateral tire forces
 bicycle model
 reduced model  no effect from traction / braking forces
 Stability of the vehicle under traction/braking (slides)
 Let's first discuss braking a single wheel / tire
 Reference to braking a
twoaxle vehicle
 Discuss the 6 cases of locked wheels during
braking without steering
 Is it possible to evaluate stability for these cases with bicycle model?
 This may be first course project  run simulations; animate the 6 cases (actually 7)
 The locked wheel cases motivate looking at ways to regulate slip, and need for feedback control
Week
5 
 Lecture 9 (Tu, 2/16) 
 no class meeting held today; you should be working toward HW2 and Project #1
 Lecture 10 (Th, 2/18) 
 Review an approach for completing HW 2; rubric; one solution; simulation code
 Two matlab files that may help with HW 2 and Project 1. Lots of
gaps, but there are parameters, initial conditions, etc., that I have
used in past. It is offered as is for you to use as you will.
 Control Concepts  1 (slides)  quick preview of topics
Week
6 
 Lecture 11 (Tu, 2/23) 
 Control Concepts  1 (slides)  cont.
 HW #2 due next time; Project 1 due by 3/3
Week
7
 Lecture 13
(Tu, 3/1)
 Open questions on Project #1  due on Thursday
 Oops. still have not posted slides, but you're all working on Project #1
 Lecture
14 (Tu, 3/3)
 Spent more time on project #1 discussion
 Project #1 is due today  extended to Monday
Week
8 
 Lecture 15 (Tu, 3/8)
 Longitudinal dynamics and control  (presented, but not posted until 3/21/16)
 Lecture 16 (Th, 3/10)
Week 9  Spring Break (March 1418)
Week
10 
 Lecture 17 (Tu, 3/22)
 Lecture 18 (Th, 3/24) 
 Spent more time today reviewing the longitudinal model (see slides posted on 3/22)
 Review basic cruise control concept
 Discussed how you can implement speed control in HW #3 (need PWM on the pmdc motor)
 Code examples for PID  started this discussion
Week
11 
 Lecture 19 (Tu, 3/29) 
 Show some more examples on closing loop  linear cases
 Continue with Code examples for implementing PID for HW #3
 Slides from today
Week
12   Lecture 21 (Tu, 4/5) 
 HW # 3 is due today
 Today's discussion meant to transition to vertical dynamics / ride
 Suspension concepts  today's slides
 Lecture 22 (Th, 4/7)
 Vertical dynamics and ride  1  today's slides
 Quartercar vibration/ride models
 Timedomain response of simple, baseexcited massspringdamper
 1/2car model
 Frequency response from transfer functions (for insight into vehicle vibration response)
 Terrain descriptions for vehicle vibration analysis
 Supplemental reading: Random vibrations
Week
13   Lecture 23 (Tu, 4/12)
 Lecture 24 (Th, 4/14)
Week
14   Lecture 25 (Tu, 4/19) 
 Lecture 26 (Th, 4/21) 
Week
15   Lecture 27 (Tu, 4/26) 
 HW #4 due today
 How will we finish the semester?
 Rollover, extended vehicle handling with suspension and roll
 Twowheeled bicycle dynamics and control
 Ford presentation
 Lecture 28 (Th, 4/28)
 Vehicle rollover dynamics and control  description of 6 problems
 HW
#5  work problems as given in the slides provided above. Must
submit solutions to problems 1 and 6 +select either of 2, 3, or 5.
Submit 3 problems total.  due date is 5/6/16
 NOTE:
Must show fully rationalized solutions from basic NE equations  not
the shortcut solutions as provided in the slides. I will be
looking for well defined coordinate frames, vector definitions, etc.
 a little more help on problem 1  part (b)
Week
16   Lecture 29 (Tu, 5/3)
 Project
2  twowheel bicycle model and simulation to be discussed today.
You will read and report on the model and simulations in the
article: Lowell and McKell (1982), The Stability of Bicycles
 Requirements / expectations for Project #2 to be discussed
 Additional articles for reference:
 Lecture 30 (Th, 5/5)
 Submit your plans for Project 2 (which is due 5/13/16)
 Course review  last meeting day




Last updated April 28, 2016 
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