In this paper we study state-space realizations of Linear and Time-Invariant (LTI) systems. Motivated by biochemical reaction networks, Gonçalves and Warnick have recently introduced the notion of a Dynamical Str...
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In this paper we study state-space realizations of Linear and Time-Invariant (LTI) systems. Motivated by biochemical reaction networks, Gonçalves and Warnick have recently introduced the notion of a Dynamical Structure Functions (DSF), a particular factorization of the system's transfer function matrix that elucidates the interconnection structure in dependencies between manifest variables. We build onto this work by showing an intrinsic connection between a DSF and certain sparse left coprime factorizations. By establishing this link, we provide an interesting systems theoretic interpretation of sparsity patterns of coprime factors. In particular we show how the sparsity of these coprime factors allows for a given LTI system to be implemented as a network of LTI sub-systems. We examine possible applications in distributed control such as the design of a LTI controller that can be implemented over a network with a pre-specified topology.
This paper describes a methodology to identify all the parameters of a quadrotor system including the structure parameters and rotor assembly parameters. A CAD model is developed using SOLIDWORKS to calculate the mass...
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ISBN:
(纸本)9781467353199
This paper describes a methodology to identify all the parameters of a quadrotor system including the structure parameters and rotor assembly parameters. A CAD model is developed using SOLIDWORKS to calculate the mass moment of inertia and all the missing geometrical parameters. A three simple test rigs are built and used to identify the relationship between the motor input Pulse Width Modulation (PWM) signal and the angular velocity, the thrust force, and drag moment of the rotors. A simple algorithm is implemented to an inertial measurement unit (IMU) for estimating the attitude and altitude of the quadrotor. Experimental set up is built to verify and test the accuracy of these proposed techniques. A controller is designed based on the feedback linearization method such that the quadrotor attitude can be stabilized. Finally, the experimental results show the effectiveness of the proposed techniques and the controller design.
This paper proposes a simple method to determine the laser beam wandering and scattering in free space optics. The main application of this method is to determine the dimensions of a device required to compensate for ...
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This paper proposes a simple method to determine the laser beam wandering and scattering in free space optics. The main application of this method is to determine the dimensions of a device required to compensate for beam wandering and scattering due to the air turbulences in FSO communications. The method uses color image analysis for automatic determination of the shape of the laser spot, which provides information about the spot area and the maximum amplitude of beam wandering. Results show that when the spot is photographed on a non-colored paper screen, the method is able to determine the laser spot shape accurately. Moreover, the method is robust to the variation of the screen background illumination.
This paper describes a method for controlling a solenoid-operated valve (SOV) so that it can detect mechanical vibrations or shocks (accelerations, in general). This feature can be an important safety measure since SO...
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According to the principles of quantum physics, the computing power of a quantum machine is immense compared to that of a classical one. Encouraged by this idea important applications of quantum computation to compute...
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This paper presents a single multiplicative neuron model based on a polynomial architecture. The proposed neuron model consists of a non-linear aggregation function based on the concept of generalized mean of all mult...
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A multi-objective optimization of an induction device used for heating thin flat semiconductor plates is performed. Two conflicting targets are considered: increase of the uniformity of dissipated power (and thus of t...
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ISBN:
(纸本)9781467359795
A multi-objective optimization of an induction device used for heating thin flat semiconductor plates is performed. Two conflicting targets are considered: increase of the uniformity of dissipated power (and thus of the temperature) and the increase of total power absorbed by the semiconductor. Three optimization techniques, mono-objective aggregation, Deb's algorithm and cluster groups, all implemented using genetic algorithms, are used.
Heterogeneous high-computing distributed systems need to process tasks as efficiently as possible by mapping each task to the most suitable machine from the system. Mapping heuristics can be used to solve this problem...
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The main objective of this work is the design and implementation of a hierarchical control solution for chemical and petrochemical processes, namely the control and optimization of the ethylene reactor, the key-instal...
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Usually when modeling a real process the effects of nonlinearities must be taken into account. A road traffic sector is one such process. Considering it from a macroscopic point of view, the sector is modeled both as ...
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