The results of experiments and numerical simulations of the interaction of a plane shock wave with an area of ionization strata formed by a glow gas discharge are presented. For the experimentally obtained phenomena t...
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作者:
Shang, JunZhang, HanwenZhou, JingChen, TongwenTongji University
Shanghai Research Institute for Intelligent Autonomous Systems National Key Laboratory of Autonomous Intelligent Unmanned Systems Frontiers Science Center for Intelligent Autonomous Systems Department of Control Science and Engineering Shanghai200092 China University of Science and Technology Beijing
Key Laboratory of Knowledge Automation for Industrial Processes of Ministry of Education School of Automation and Electrical Engineering Beijing100083 China University of Alberta
Department of Electrical and Computer Engineering EdmontonABT6G 1H9 Canada
This study addresses linear attacks on remote state estimation within the context of a constrained alarm rate. Smart sensors, which are equipped with local Kalman filters, transmit innovations instead of raw measureme...
In the conventional robust optimization(RO)context,the uncertainty is regarded as residing in a predetermined and fixed uncertainty *** many applications,however,uncertainties are affected by decisions,making the curr...
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In the conventional robust optimization(RO)context,the uncertainty is regarded as residing in a predetermined and fixed uncertainty *** many applications,however,uncertainties are affected by decisions,making the current RO framework *** paper investigates a class of two-stage RO problems that involve decision-dependent *** introduce a class of polyhedral uncertainty sets whose right-hand-side vector has a dependency on the here-and-now decisions and seek to derive the exact optimal wait-and-see decisions for the second-stage problem.A novel iterative algorithm based on the Benders dual decomposition is proposed where advanced optimality cuts and feasibility cuts are designed to incorporate the uncertainty-decision *** computational tractability,robust feasibility and optimality,and convergence performance of the proposed algorithm are guaranteed with theoretical *** motivating application examples that feature the decision-dependent uncertainties are ***,the proposed solution methodology is verified by conducting case studies on the pre-disaster highway investment problem.
To solve the problems of long running time and high energy consumption of existing high-speed railways, intercity railways and other trains between stations. The study adopts a four-phase operation control strategy to...
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ISBN:
(纸本)9798400715198
To solve the problems of long running time and high energy consumption of existing high-speed railways, intercity railways and other trains between stations. The study adopts a four-phase operation control strategy to drive trains, and investigates the impact of operating condition transition points on running time and energy consumption. The particle swarm optimization algorithm is used to find the global optimal solution that balances running time and energy consumption in the solution space of operating condition transition points. The research results indicate that a method has been designed to determine the four-phase train operation control strategy by only solving the speed of two points: acceleration-cruising transition point and coasting-braking transition point. This reduces the particle dimension of particle swarm optimization algorithm and improves the efficiency of using particle swarm optimization algorithm to solve the four-phase train operation control strategy. An equivalent method for calculating energy consumption during the cruising phase is proposed to ensure more accurate calculation of energy consumption during train running. By configuring appropriate time and energy consumption coefficients and using particle swarm optimization algorithm, the four-phase train operation control strategy can be solved to obtain the optimal position and speed of the operating condition transition point. This can achieve dual objective optimization of running time and energy consumption, reducing train running energy consumption while ensuring on-time operation. Using the line data from Xinmin North Station to Heishan North Station on the Beijing Shenyang High speed Railway, with CR400BF-A high-speed multiple unit parameters as input, a time coefficient of 0.6 and an energy consumption coefficient of 0.4, the four-phase train operation control strategy solved by particle swarm optimization algorithm was used to drive the train. The running time was 1010 seconds
Constants in Esseen–Rozovskii type inequalities proposed by Gabdullin, Makarenko, and Shevtsova (2018) are improved for one of the most important special cases: independent identically distributed random summands. Th...
Constants in Esseen–Rozovskii type inequalities proposed by Gabdullin, Makarenko, and Shevtsova (2018) are improved for one of the most important special cases: independent identically distributed random summands. The considered inequalities are used to estimate the uniform distance between the distribution function of the standardized sum of independent identically distributed random summands with finite second moments and the standard normal distribution function. As in the work by Gabdullin, Makarenko, and Shevtsova (2018), an estimate is made in terms of a truncated algebraic third-order moment and the tail of the second-order moment of the general distribution of random summands.
This paper presents FeatSense, a feature-based GPU-accelerated SLAM system for high-resolution LiDARs, combined with a map generation algorithm for real-time gener-ation of large Truncated Signed Distance Fields (TSDF...
This paper presents FeatSense, a feature-based GPU-accelerated SLAM system for high-resolution LiDARs, combined with a map generation algorithm for real-time gener-ation of large Truncated Signed Distance Fields (TSDFs) on em-bedded hardware. FeatSense uses LiDAR point cloud features for odometry estimation and point cloud registration. The registered point clouds are integrated into a global Truncated Signed Distance Field (TSDF) representation. FeatSense is intended to run on embedded systems with integrated GPU-accelerator like NVIDIA Jetson boards. In this paper, we present a real-time capable TSDF-SLAM system specially tailored for closely coupled CPU/GPU systems. The implementation is evaluated in various structured and unstructured environments and benchmarked against existing reference datasets. The main contribution of this paper is the ability to register up to 128 scan lines of an Ouster OS1-128 LiDAR at 10Hz on a NVIDIA AGX Xavier while achieving a TSDF map generation speedup by a factor of 100 compared to previous work on the same power budget.
While in 1971 the Earth Overshoot Day was on December 25th, in 2022 this day for Austria was already reached on July 28th. And since uncertainties in the remanufacturing production planning occur, companies are forced...
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While in 1971 the Earth Overshoot Day was on December 25th, in 2022 this day for Austria was already reached on July 28th. And since uncertainties in the remanufacturing production planning occur, companies are forced to take in trade-offs like increased production capacity available at short notice. These uncertainties result in financial losses and production waste, as well as bottlenecks in the supply of materials for gas engine assembly. For this reason, this paper explores the use of a grey wolf optimizer for the reduction of the cycle time of a gas engine remanufacturer. A discrete event simulation is used for evaluation purposes and the results from the scheduler are compared with benchmarks of the current production planning of manufacturers.
This paper presents control strategies based on time-varying convergent higher order control barrier functions for the coordination of networks of platoons. This network could be modelled by a class of leader-follower...
This paper presents control strategies based on time-varying convergent higher order control barrier functions for the coordination of networks of platoons. This network could be modelled by a class of leader-follower multi-agent systems, where the leaders have knowledge on the associated tasks and control the performance of their platoon involved vehicles. The followers are not aware of the tasks, and do not have any control authority to reach them. They follow their platoon leader commands for the task satisfaction. Signal temporal logic (STL) tasks are defined for the platoons coordination. Robust solutions for the task satisfaction, based on the leader’s accessibility to the follower vehicles’ states are suggested. In addition, using the notion of higher order barrier functions, decentralized barrier certificates for each vehicle evolving in a formation dynamic structure are proposed. Our approach finds solutions to guarantee the satisfaction of STL tasks independent of the agents’ initial conditions.
作者:
Tamás, AmbrusCsáji, Balázs CsanádSZTAKI
The Institute for Computer Science and Control ELKH: Eötvös Loránd Research Network 13-17 Kende utca Budapest1111 Hungary
Budapest Hungary
One of the key objects of binary classification is the regression function, i.e., the conditional expectation of the class labels given the inputs. With the regression function not only a Bayes optimal classifier can ...
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Smart cities have been a very active research area in the past 20 years, while continuously adapting to new technological advancements and keeping up with the times regarding sustainability and climate change. In this...
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