제어로봇시스템학회:학술대회논문집
- 1992.10a
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- Pages.474-478
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- 1992
Zero locus of a beam with varying actuator and sensor locations and dynamical analysis
Actuator와 sensor의 위치 변화에 따른 beam의 zero궤적과 동역학적 해석
Abstract
The non-rational transfer function of a Bernoulli-Euler beam, as an important component of a flexible structure, is analyzed. The true pattern of zeros of that transfer function is investigated as a function of sensor and actuator seperation. Translational displacement sensors are used for two cases in which a force input and a moment input are seperately applied. When the displacement sensor is located at a certain point, the first pair of zeros on the real axis of the s-plane arrive at the origin and cancel the rigid-body mode. The location of the translational displacement sensors on the beamat which the rigid-body mode of the beam is unobservable is analyzed as the center of percussion and is uniquely located for each case. If sensor is moved beyond such a point, a pair of zeros appear on the imaginary axis and move away from the origin along the imaginary axis of the s-plane.
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