Details
| Original language | English |
|---|---|
| Pages (from-to) | 7-33 |
| Number of pages | 27 |
| Journal | Dynamics and Control |
| Volume | 3 |
| Issue number | 1 |
| Publication status | Published - Jan 1993 |
| Externally published | Yes |
Abstract
A control scheme is designed for the purpose of suppression of vibratory motion of a dynamical system. The efficacy and robustness of the controller vis a vis unknown but bounded disturbances and state measurement errors is investigated analytically and numerically. As an example of a dynamical system we consider a single degree of freedom mass-spring-damper system that is excited by an unknown force. The control scheme presupposes that the spring and damping coefficients can be varied within prescribed bounds, albeit not independently. The construction of such a semiactive controller can be realized by using the properties of so called electrorheological fluids (see [1] for relevant experimental investigations). The called for changes in spring and damping properties can be effected in microseconds since the control does not involve the separate dynamics (inertia) of usual actuators. The design of the controller is based on Lyapunov stability theory which is also utilized to investigate the stabilizing properties of the controller. To accommodate state measurement errors the proposed control scheme is combined with a fuzzy control concept. Simulations are carried out for examples of periodic, continuous nonperiodic, discontinuous periodic and random excitation forces.
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
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In: Dynamics and Control, Vol. 3, No. 1, 01.1993, p. 7-33.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Semiactive control of a vibrating system by means of electrorheological fluids
AU - Leitmann, G.
AU - Reithmeier, E.
PY - 1993/1
Y1 - 1993/1
N2 - A control scheme is designed for the purpose of suppression of vibratory motion of a dynamical system. The efficacy and robustness of the controller vis a vis unknown but bounded disturbances and state measurement errors is investigated analytically and numerically. As an example of a dynamical system we consider a single degree of freedom mass-spring-damper system that is excited by an unknown force. The control scheme presupposes that the spring and damping coefficients can be varied within prescribed bounds, albeit not independently. The construction of such a semiactive controller can be realized by using the properties of so called electrorheological fluids (see [1] for relevant experimental investigations). The called for changes in spring and damping properties can be effected in microseconds since the control does not involve the separate dynamics (inertia) of usual actuators. The design of the controller is based on Lyapunov stability theory which is also utilized to investigate the stabilizing properties of the controller. To accommodate state measurement errors the proposed control scheme is combined with a fuzzy control concept. Simulations are carried out for examples of periodic, continuous nonperiodic, discontinuous periodic and random excitation forces.
AB - A control scheme is designed for the purpose of suppression of vibratory motion of a dynamical system. The efficacy and robustness of the controller vis a vis unknown but bounded disturbances and state measurement errors is investigated analytically and numerically. As an example of a dynamical system we consider a single degree of freedom mass-spring-damper system that is excited by an unknown force. The control scheme presupposes that the spring and damping coefficients can be varied within prescribed bounds, albeit not independently. The construction of such a semiactive controller can be realized by using the properties of so called electrorheological fluids (see [1] for relevant experimental investigations). The called for changes in spring and damping properties can be effected in microseconds since the control does not involve the separate dynamics (inertia) of usual actuators. The design of the controller is based on Lyapunov stability theory which is also utilized to investigate the stabilizing properties of the controller. To accommodate state measurement errors the proposed control scheme is combined with a fuzzy control concept. Simulations are carried out for examples of periodic, continuous nonperiodic, discontinuous periodic and random excitation forces.
UR - http://www.scopus.com/inward/record.url?scp=0027149231&partnerID=8YFLogxK
U2 - 10.1007/BF01968357
DO - 10.1007/BF01968357
M3 - Article
AN - SCOPUS:0027149231
VL - 3
SP - 7
EP - 33
JO - Dynamics and Control
JF - Dynamics and Control
SN - 0925-4668
IS - 1
ER -