제어로봇시스템학회:학술대회논문집
- 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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- Pages.593-596
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- 1997
Limiting zeros of sampled systems with approximated fractional order hold
- Ishitobi, Mitsuaki (Department of Mechanical Engineering and Materials Science Faculty of Engineering, Kumamoto University) ;
- Zhu, Qin (Department of Mechanical Engineering and Materials Science Faculty of Engineering, Kumamoto University)
- 발행 : 1997.10.01
초록
This paper is concerned with the properties of zeros of discrete-time systems which are composed of a hold, a continuous-time plant and a sampler in cascade. Here the signal reconstruction is based on the fractional order hold. In order to overcome the implementing problem of the fractional order hold, the piecewise constant reconstruction method by use of the zero order hold is introduced. The properties of the zeros are explored in the limiting cases when the sampling period tends to zero. The stability conditions of the zeros for sufficiently small sampling periods are also presented.