the problems of water quality sensors and actuators placement in drinking water distribution systems (DWDSs) are addressed as separate, primarily. However, against the background of control systems theory, the nature ...
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ISBN:
(纸本)9781728173818;9781728173801
the problems of water quality sensors and actuators placement in drinking water distribution systems (DWDSs) are addressed as separate, primarily. However, against the background of control systems theory, the nature of DWDSs dynamics indicates that these both problems are interdependent and impact the design of related water quality monitoring and control structures and algorithms. the research work presented in this paper is to investigate the state-of-the-art in this field and discuss the problems of water quality sensors and actuators placement within DWDS and to highlight the potential benefits of considering the joint task of their allocation.
Efficient maintenance of industrial equipment requires degradation monitoring and prediction. Currently used prediction models are mostly deterministic and cannot consider uncertainty inherent to degradation measureme...
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ISBN:
(纸本)9781728173818;9781728173801
Efficient maintenance of industrial equipment requires degradation monitoring and prediction. Currently used prediction models are mostly deterministic and cannot consider uncertainty inherent to degradation measurements. In this paper we propose using time series models obtained using Facebook Prophet algorithm to predict the evolution of degradation of turbomachinery. We Illustrate our considerations with data from large scale industrial centrifugal compressors. Our predictions are promising and confidence intervals cover the predictions well.
Deformable models have bad great successes over the past 20 years in medical applications. We have recently developed new classes of deformable models which we term hybrid deformable models to automate the model initi...
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ISBN:
(纸本)9781424403417
Deformable models have bad great successes over the past 20 years in medical applications. We have recently developed new classes of deformable models which we term hybrid deformable models to automate the model initialization process and make improvements in segmentation and registration. In this paper we present several hybrid deformable methods we have been developing for segmentation and registration. these methods include Metamorphs, a novel shape and texture integration deformable model framework and the integration of deformable models with graphical models and learning methods. We first present a framework for the robust segmentation and tracking of the heart from tagged MRI images and second applications involving brain tumor segmentation as well as brain and cardiac shape registration.
Marine sciences require the use of Autonomous Underwater Vehicles (AUV) for their missions in order to perform unmanned duties like deep-sea explorations. AUV require to reject turbulence disturbances while regulating...
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ISBN:
(纸本)9781728173818;9781728173801
Marine sciences require the use of Autonomous Underwater Vehicles (AUV) for their missions in order to perform unmanned duties like deep-sea explorations. AUV require to reject turbulence disturbances while regulating their trajectory. In this paper, a position controller applying the Generalized Proportional Integral (GPI) observer to an Autonomous Underwater Vehicle (AUV) in order to maintain the desired trajectory and reject the environment perturbations is given. the mathematical model and the performance of the GPI shows a precise and fast tracking control through simulations.
When studying or designing a large-scale network system, a simpler representation of the dynamics of the system is often needed. this is because, for a very large scale system where the dynamics of all the nodes are c...
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ISBN:
(纸本)9798350311075
When studying or designing a large-scale network system, a simpler representation of the dynamics of the system is often needed. this is because, for a very large scale system where the dynamics of all the nodes are coupled, the system of differential equations describing the system are very high order. In such cases, engineers are faced with determining a "lower-order" model that provides a good enough representation of the large-scale dynamics. Prior work by the author has identified fractional-order dynamics in large, scale-free networks and noted that fractional-order models often better match the dynamic response of the network when the stiffness relationship (a spring constant) in the relationship between nodes in the network is larger. this work extends those results by systematically determining what parameters in the network are statistically significantly correlated with fractional-order models better matching the large-scale dynamics than integer-order models. Specifically we find a weak correlation between the degree of connectivity of the network, the spring constant, the distance in the network between the two nodes, and the size of the network to be statistically significantly correlated to whether fractional-models are better. Interestingly, in contrast to the stiffness, the damping is statistically uncorrelated with fractional-dynamics.
Object detection in 3D is a crucial aspect in the context of autonomous vehicles and drones. However, prototyping detection algorithms is time-consuming and costly in terms of energy and environmental impact. To addre...
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ISBN:
(纸本)9798350311075
Object detection in 3D is a crucial aspect in the context of autonomous vehicles and drones. However, prototyping detection algorithms is time-consuming and costly in terms of energy and environmental impact. To address these challenges, one can check the effectiveness of different models by training on a subset of the original training set. In this paper, we present a comparison of three algorithms for selecting such a subset - random sampling, random per class sampling, and our proposed MONSPeC (Maximum Object Number Sampling per Class). We provide empirical evidence for the superior effectiveness of random per class sampling and MONSPeC over basic random sampling. By replacing random sampling with one of the more efficient algorithms, the results obtained on the subset are more likely to transfer to the results on the entire dataset. the code is available at: https://***/vision-agh/monspec.
Robots are increasingly performing complex tasks in industrial settings, such as welding, painting, and cutting, but their lower stiffness and repeatability, especially in the cheaper end of the market, limit performa...
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ISBN:
(纸本)9798350311075
Robots are increasingly performing complex tasks in industrial settings, such as welding, painting, and cutting, but their lower stiffness and repeatability, especially in the cheaper end of the market, limit performance. While previous research aimed to improve robot repeatability by optimizing the pose of the workpiece, these approaches were not feasible for large and complex paths. this paper proposes a novel approach of incorporating a second robot to adjust the workpieces position during the manufacturing process, thereby forming a single high-precision robotic system. this paper aims to investigate the feasibility of this approach. For this purpose, it presents a path planner to leverage the resulting additional degrees of freedom to achieve greater repeatability. the effectiveness of this planner is then compared to previous approaches.
there is presented a method for calculation of inertial model for astatic system based on system step response. the method is simple and can be easily used in automatic control practice. Identified model can be applie...
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ISBN:
(纸本)9781467355087;9781467355063
there is presented a method for calculation of inertial model for astatic system based on system step response. the method is simple and can be easily used in automatic control practice. Identified model can be applied in control algorithms more advanced than PID controller, for instance in predictive control.
Presented are results of simulations of B-dot detumbling for satellites with different types of non-symmetrical mass distributions. Results are next compared withthe theoretical derivation of the problem made for the...
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ISBN:
(纸本)9781467355087;9781467355063
Presented are results of simulations of B-dot detumbling for satellites with different types of non-symmetrical mass distributions. Results are next compared withthe theoretical derivation of the problem made for the case of spherically symmetrical bodies.
the problem of partially hinged partially free rectangular plate that aims to represent a suspension bridge subject to some external forces (for example the wind) is considered in order to model and simulate the unsta...
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ISBN:
(纸本)9798350362350;9798350362343
the problem of partially hinged partially free rectangular plate that aims to represent a suspension bridge subject to some external forces (for example the wind) is considered in order to model and simulate the unstable end behavior. Such a problem can be modeled by a plate evolution equation, which is nonlinear with a nonlocal stretching effect in the spanwise direction. the external forces are periodic in time and cause the vortex shedding on the structure (on the surface of the plate) and thus it may cause damage to the material. Numerical study of the behavior of steady state solutions for different values of the force velocity are provided with two finite element methods of different type.
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