The Design and Implementation of a Digital Integrator for Use in an Active Vibration Control System

Immroslany situations arise in valid: the control of Vibration is necessary; for example.reciprocating machinery may tranmit large periodic forces Which result in excessive vibration levels at another point.in space structures, vibration may cause problem; where high accuracy is required in devices such as space telescopes or satellite transmission systems.'No broad categories of vibration control system: exist: passive systems which contain energy storing and dissipative commute.and active systems which use secondary sources of energy to attain : to reduce the overall system energy in some Eyre-determined way.In my situations,_ use pf passive mthods of isolation will give adequate results.active control, Muevar.may be used togood effect in situations more passive systems are less efficient.such as at low frequencies.or where use of passive methods would lead to the addition of too much maseto a. system. in addition.an active systemcan be made adaptive so that parameter" variations may be tracked, and for deterministic inputs in particular, the system may actually preview the disturbance and then attempt to control it in son way,