ABSTRACT
Vibration control is a major problem in many mechanical systems. Continuous mild vibrations may interfere with the system’s performance and/or cause a rapid weathering of physical elements. Intensive vibrations may even cause immediate damage to the system. In active control systems, the actuators need external energy source in order to generate control forces. Semi-active control strategy is sometimes referred to as a class of active control. Similar to an active one, a semi-active control system can alter its properties in real-time, however, it can do this by a very small amount of external power, compared to an active control system. The chapter also provides an overview of the key concepts discussed in this book. The book deals with several optimal control design problems, which are related to passive and semi-active controlled structures, and with their solutions.
