Vibration Attenuation by Passive Mechanical Networks: Achievable Performance Limitations and Hybrid Optimization
| Project/Area Number |
24560541
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Control engineering
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
Kanno Masaaki 新潟大学, 自然科学系, 准教授 (80554261)
|
|---|
| Research Collaborator |
Smith Malcolm C.
|
|---|
| Project Period (FY) |
2012-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
|---|
| Keywords | 受動的システム / 制振制御 / 達成可能性能 / 国際研究者交流 / イギリス |
|---|
| Outline of Final Research Achievements |
This research project is concerned with analysis of the best achievable performance level of vibration attenuation by means of passive mechanical networks, with the use of the inerter, a recently invented passive mechanical element, in mind. It has been shown that the inerter may improve the performance when measured in terms of the H2 norm or H-infinity norm but that the improvement can be marginal for a system with a soft spring. Also, it is shown that the inerter may be beneficial when there is a constraint on the travel of the vibration absorption part. An algebraic method is developed that tunes system parameters in order to optimize the H-infinity performance. Moreover, the notion of `average damping ratio' is introduced, and it is shown that the quantity can algebraically be characterized, which further leads to an approach that minimizes the H2 performance under a constraint on the average damping ratio.
|
Report
(5 results)
Research Products
(3 results)
