Chaotic behaviors at the current mode controlled boost converter were demonstrated by computer simulation studies (Chan and Tse, 1997; Banerjee et al., 2000). The proposed control strategy OGY (Ott Grebogi-Yorke) trie...
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Chaotic behaviors at the current mode controlled boost converter were demonstrated by computer simulation studies (Chan and Tse, 1997; Banerjee et al., 2000). The proposed control strategy OGY (Ott Grebogi-Yorke) tries to stabilize one unstable trajectories from an chaotic attractor. The result of this method is the transformation from a chaotic trajectory in a periodic one
The success of TURING Test technologies for system validation depends on the quality of the human expertise behind the system. As an additional source of human experts' validation knowledge a Validation Knowledge ...
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This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers a...
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ISBN:
(纸本)9780780397958
This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers are proposed based on the backstepping control technique. The experimental setup used is a 6-story test structure equipped with shear-mode semiactive magnetorheological dampers being installed in the Washington University Structural Control and Earthquake Engineering Laboratory (WUSCEEL). The experimental results obtained have verified the effectiveness of the proposed control algorithms.
The paper summarizes knowledge acquired from analysis of automatic control of municipal solid waste incinerator plant during the reduction of nitrogen oxides (NOx). On the base of theoretical analysis and practical me...
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ISBN:
(纸本)8086059456
The paper summarizes knowledge acquired from analysis of automatic control of municipal solid waste incinerator plant during the reduction of nitrogen oxides (NOx). On the base of theoretical analysis and practical measurement it was derived that the standard control concept is not suitable. The reason is a lacking influence of ammonia during reduction of nitrogen oxides and this non-linearity of plant is contradicted for utilization of integral component in controller's transfer function.
The international standard IEC 61499 defines an event-driven, distributed application based on Function Blocks. Such a block represents a kind of object with an internal behaviour. The blocks interact via input and ou...
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Control concepts for mobile service robots are a key issue in robotic research. With the use of mobile robots in the domestic area, further challenges entails new designs facilitating efficient control concepts for fa...
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Modern complex system design demands modeling on a high level of abstraction together with the system environment components. Such model enables mission level system simulation in the context of its operational condit...
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Modern complex system design demands modeling on a high level of abstraction together with the system environment components. Such model enables mission level system simulation in the context of its operational conditions. A mission level design language providing mission and system level verification is presented in this paper. Also, this language enables designers to describe some of the components at implementation level to test and validate the system implementation at mission level. In this way a uniform design framework is achieved from mission/system down to implementation level
Continuing the papers by Tulbure et al. (2004), are presented some significant results of numerical simulations for railway traction motors, which can be treated as components of electrical locomotives EC-43, by 3.6 M...
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Continuing the papers by Tulbure et al. (2004), are presented some significant results of numerical simulations for railway traction motors, which can be treated as components of electrical locomotives EC-43, by 3.6 MW, with 80t mass. For the starting mode of operation in frequency steps of Deltaf=2.5 Hz, with the slip S c =0.1, are interesting the evolution and interpretation of r.m.s. values of input voltage U 1 [V], stator current I 1 [A], traction force F T [t], developed power P[kW] and speed v[km/h]. It is imposed the maintenance of excitation flux at nominal value Psi=2.73[Wb]
This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers a...
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Underwater vehicles are highly nonlinear and complex systems, that makes designing autopilots extremely difficult. This paper presents autotuning as a method for tuning parameters of a micro-ROV autopilot. The main be...
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Underwater vehicles are highly nonlinear and complex systems, that makes designing autopilots extremely difficult. This paper presents autotuning as a method for tuning parameters of a micro-ROV autopilot. The main benefit of this procedure is that the model of the process does not have to be known. Autotuning is often used for industrial processes but not on marine vessels. This procedure, which is performed in closed-loop, is completely automated and enables the operator to retune an autopilot whenever ROV performance is degraded (due to different operating points, tether influence, currents, etc.). In this article we use already known different autotuning recommendations (primarily designed for type 0 processes) with some modifications which we recommend for micro-ROVs. We also give results of using different types of PID controllers, whose parameters are being tuned. A real life demonstration on a VideoRay Pro II micro-ROV is provided
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