The building automation and control network (BACnet) standard defines all the elements of communication between devices, from the abstract language of the objects and services right down to the physical local area net...
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The building automation and control network (BACnet) standard defines all the elements of communication between devices, from the abstract language of the objects and services right down to the physical local area networks (LAN). With its adoption as an ANSI standard and the interest shown worldwide, BACnet points the way to the future of communication within building automation controls.
Quantitative Feedback Theory (QFT) was applied successfully to enhance the robust stability and tracking performance of the pitch flight controlsystem for a remote pilotless vehicle (RPV), within its full flight enve...
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Quantitative Feedback Theory (QFT) was applied successfully to enhance the robust stability and tracking performance of the pitch flight controlsystem for a remote pilotless vehicle (RPV), within its full flight envelope. The influence of control surface loss or damage to the dynamic derivatives of the aircraft model can be treated as an extension of the model uncertainty robustness problem. QFT is applied to the analysis and design of the fault tolerant flight controlsystem allowing for possible control surface damages.
In this paper, we propose a design method of an output feedback-based adaptive model output following controlsystem based on backstepping strategy for MIMO plants. It is shown that the proposed adaptive control syste...
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In this paper, we propose a design method of an output feedback-based adaptive model output following controlsystem based on backstepping strategy for MIMO plants. It is shown that the proposed adaptive controlsystem has robustness with regard to output-dependent disturbances. Further, the proposed adaptive control method is applied to the parallel inverted pendulums with output-dependent disturbances and the effectiveness of the controlsystem is confirmed through experiments.
Linear movement of open containers containing liquid is considered. The design is based on a simple linearized slosh model. An open-loop acceleration trajectory is calculated using optimal control techniques. The calc...
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Linear movement of open containers containing liquid is considered. The design is based on a simple linearized slosh model. An open-loop acceleration trajectory is calculated using optimal control techniques. The calculated acceleration profiles are evaluated using experiments with a laser-based sensor and recordings by a video camera. The performance is better than previous ad-hoc controllers.
We consider an integrated design problem of structural and controlsystems. Using reduced-order H∞ controller design method proposed by Mustafa and Glover, we formulate the integrated design as a simultaneous design ...
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We consider an integrated design problem of structural and controlsystems. Using reduced-order H∞ controller design method proposed by Mustafa and Glover, we formulate the integrated design as a simultaneous design of the structural design parameter and the reduced order H∞ controller. The formulated problem does not need to take an iterative procedure (controller synthesis and structural modification) which is employed in most integrated design.
This paper discusses in detail the α-β-γ filter which is a sampled data target tracker which can asymptotically track a constant acceleration target. The α-β-γ filter is analyzed by determining the bounds on the...
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This paper discusses in detail the α-β-γ filter which is a sampled data target tracker which can asymptotically track a constant acceleration target. The α-β-γ filter is analyzed by determining the bounds on the α-β-γ parameters for stability. A closed form equation for the mean square response of the system to white noise is derived to characterize its ability to filter noise.
By applying a NN (neural network), this paper proposes an adaptive controlsystem for the two types of JIT (Just-in-Time) production systems with unstable changes in demand. In the proposed system, a multi-layered NN ...
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By applying a NN (neural network), this paper proposes an adaptive controlsystem for the two types of JIT (Just-in-Time) production systems with unstable changes in demand. In the proposed system, a multi-layered NN is applied to detecting the pattern change in the time series data on demand, and the detected pattern change is utilized for adjusting the buffer size in the JIT production systems. The performance of the proposed system is investigated and compared with that of the previous system by simulation experiments.
In this paper, system identification of semiconductor exposure apparatus is discussed. It has a multi-degrees-of-freedom mechanism which includes anti-vibration units for microvibration control. A dynamical model of t...
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In this paper, system identification of semiconductor exposure apparatus is discussed. It has a multi-degrees-of-freedom mechanism which includes anti-vibration units for microvibration control. A dynamical model of the mechanism is necessary in order to design the microvibration controller. The model is practically constructed in a short time using subspace method. Identification results are evaluated through experimental data in comparison with conventional frequency response method.
A strategy for detecting control law calculation errors in critical flight controlcomputers during laboratory validation testing is presented. This paper addresses Part I of the detection strategy which involves the ...
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A strategy for detecting control law calculation errors in critical flight controlcomputers during laboratory validation testing is presented. This paper addresses Part I of the detection strategy which involves the use of modeling of the aircraft control laws and the design of Kalman filters to predict the correct control commands. Part II of the strategy which involves the use of the predicted control commands to detect control command errors is presented in the companion paper.
This paper shows that traditional methods for design of PID controllers can be related to robust H∞ control. In particular it is shown that the specifications in terms of maximum sensitivity and maximum complementary...
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This paper shows that traditional methods for design of PID controllers can be related to robust H∞ control. In particular it is shown that the specifications in terms of maximum sensitivity and maximum complementary sensitivity are related to the weighted H∞ norm introduced by Glover and McFarlane (1989). It is also shown that the Vinniecomb metric can be used to classify the classes of systems that can be stabilized with the design methods in Astrom et al. (1998) and Panagopoulos (1998).
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