document: Vibration control of structure by using tuned mass damper -LRB- development of system which suppress displacement of auxiliary mass -RRB- In vibration control of a structure by using an active tuned mass damper -LRB- ATMD -RRB- , stroke of the auxiliary mass is so limited that it is difficult to control the vibration in the case of large disturbance input . In this paper , two methods are proposed for the problem . One of the methods is a switching control system by two types of controllers . One of the controllers is a normal controller under small relative displacement of the auxiliary mass , and the other is not effective only for first mode of vibration under large relative displacement of the auxiliary mass . New variable gain control system is constructed by switching these two controllers . The other method is the brake system . In active vibration control , it is necessary to use actuator for active control . By using the actuator , the proposed system puts on the brake to suppress displacement increase of the auxiliary mass under large disturbance input . Finally , the systems are designed and the effectiveness of the systems is confirmed by the simulation
doc_bio_tags: B I O O O O B I I O O O O O O O O O O O O B I O O O O O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I I O O O O O O B O O O O O O B I O O O B I O O O O O O B O B I O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
extractive_keyphrases: tuned mass damper vibration control variable gain control system brake system actuator active control controllers
abstractive_keyphrases: auxiliary mass displacement suppression