Theory-Lesson 10(Integrated Controls)

Question 1

4 attributes of vehicle dynamics

Answer 1

1)Agility:fun to drive car
2)Stability: driver’s confidence, pretictable car
3)Precision: steering, handling, braking
4)Comfort: controlling roll pitch, minimizing harshness and vibrations

Question 2

Integrated Controls

Answer 2

To introduce integrated controls to cars, we should account that interactions and performance conflicts arise within the system. For example, the use of single-wheel braking to reduce oversteer will certainly conflict with the requirement for traction under forward acceleration.

Question 3

Design tools for integrated vehicle dynamics:

Answer 3

1)Design of computer experimebts.
2)Use of surrogate models
3)Sensitivity analysis
4)Mathematical programming
5)Genetic algorithms
6)Trade-off analysis(Pareto set)

Question 4

Principle of synerginsm

Answer 4

Fundamental for the design of integrated controls. If we consider the variation of the i-th OF of a vehicle fitetd with a number of active controls with respect to a reference vehicle
Δfi=fi-fi.ref

The main idea is that when optimizing the tire and the suspension, I cannot get any better results than optimizinh the tire and the suspension seperately.