摘要
Magnetostriction is a phenomenon in which a magneti c field is used to produce a change in size of some materials. This property has b een known in elements such as nickel, iron and cobalt. Because the rare-ear th alloy Terfenol-D can offer much larger strains than nickel, iron, cobalt, an d other smart materials such as piezoelectric materials, it is called giant magn etostrictive material. Making use of the giant magnetostrictive material, the gi ant magnetostrictive actuator has higher bandwidth and rapider response than oth er actuators. So it is widely used in active vibration control, especially in lo w frequency stage. In this paper, a turning vibration control system is develope d. The system has an actuator clamped in a flexor that is rigid in the feed and main cutting force directions, yet is flexible in the radial direction. The stru cture of the giant magnetostrictive actuator is developed after magnetic circuit and some structure parameter are calculated. According to the turning frequency , the transient and stable-state output of the giant magnetostrictive actuator is measured. The test result demonstrated that the actuator responses the input rapidly, and the actuator has perfect stable-state and transient output charact eristic. The characteristic includes the stable-state output linearity, repeata bility and transient delay between output displacement and input current.
Magnetostriction is a phenomenon in which a magneti c field is used to produce a change in size of some materials. This property has b een known in elements such as nickel, iron and cobalt. Because the rare-ear th alloy Terfenol-D can offer much larger strains than nickel, iron, cobalt, an d other smart materials such as piezoelectric materials, it is called giant magn etostrictive material. Making use of the giant magnetostrictive material, the gi ant magnetostrictive actuator has higher bandwidth and r...
作者
LI Guo-ping 1,2, WEI Yan-ding 1, ZHENG Di 2, CHEN Zi-chen 1 (1. Institute of Advanced Manufacture Engineering, Zhejiang University, Hangzhou 310027, China
2. Dept. of Mechanical Engineering, Ningbo University, Ningbo 315211, China)
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第S1期78-79,共2页
Journal of Xiamen University：Natural Science
基金
ZhejiangNaturalScienceFoundation (5 990 85 )
NationalNaturalScienceFoundationofChina(5 0 0 0 5 0 2 0 )
ZhejiangEducationOfficeProjectItem(2 0 0 1 0 2 5 3 )
NingboYouthScienceFounda tion (0 2J2 0 1 0 2 0 7)
