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434 Multibody Systems Approach to Vehicle Dynamics
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A B A B C A C B C D E D A D B D C E C D B E A E E
Fig. 7.32 An L (5-1) 16 two-level orthogonal array used for processing five
variables in 16 runs. Columns A B handle interactions between A and B,
and so on.
y
( x, y )
tan 1 ()
Fig. 7.33
Linear form of presumed response
x
related to input in the following manner:
y( xx)
y e
(7.38)
where y is the response, x is the signal, and e is the error. y – and x – are the
averages over the whole experimental data set.
If the system is non-linear (as is typical), the ideal function is defined
such that the linear form of this equation can still be applied. As a further
example, if acceleration performance is being considered then the ideal
function is ‘constant power acceleration’ such that
1 2
Pt mv
(7.39)
2