Carl Q. Howard and Colin H. Hansen
Recent
research on the selection of a cost function for active vibration isolation
has considered the minimization of the weighted sum of squared force and squared
velocity. The minimization of this cost function can provide isolation performance
that is close to that achievable when minimizing the total power transmission.
One advantage of using the weighted sum of squared force and squared velocity
as a cost function, is the independence of the phase accuracy of the force
and velocity transducers on the magnitude of the cost function, thus eliminating
the problem that plagues structural intensity type cost functions.
Here, experimental results are presented that compare the effectiveness of
various cost functions and demonstrate the advantage of using the sum of squared
force and squared velocity.
Presented at ICSV7, Germany