| Project/Area Number |
09650479
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
計測・制御工学
|
|---|
| Research Institution | Kumamoto University |
|---|
Principal Investigator |
ISHITOBI Mitsuaki Graduate School of Science and Technology, KUMAMOTO UNIVERSITY, Professor, 大学院・自然科学研究科, 教授 (40159752)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ZHU Qin Faculty of Engineering, KUMAMOTO UNIVERSITY, Research Assistant, 工学部, 助手 (00264317)
|
|---|
| Project Period (FY) |
1997 – 1999
|
| Project Status |
Completed (Fiscal Year 1999)
|
| Budget Amount *help |
¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1999: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1998: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1997: ¥1,400,000 (Direct Cost: ¥1,400,000)
|
|---|
| Keywords | control engineering / digital control / computer control / discrete-time system / adaptive control / sampling / zeros / hold |
|---|
| Research Abstract |
1. Analysis of stability of zeros for systems with approximate fractional-order holds.
When a fractional-order hold is implemented by an approximate fractional-order hold, the stability of zeros is analyzed theoretically. It is cleared that the approximate fractional-order hold has the same properties of stability of zeros as the ideal fractional-order hold. As a result, the approximate fractional-order holds can improve the stability properties of zeros compared with a zero-order hold.
2. Experimental confirmation of the advantages of the approximate fractional-order holds through adaptive control.
We implemented the approximate fractional-order holds with two, three and four steps, and confirmed the effectiveness of the approximate fractional-order holds experimentally.
3. Development of software for control system analysis with fractional-order holds
MATLAB software was developed for system analysis when fractional-order holds or approximate fractional-order holds are used for design of digital control systems. The software is opened in the internet. The address is as follows:
http://www.mech.kumamoto-u.ac.jp/Info/lab/control/zeroopen.html
|
