The dynamical, boundary optimal controlproblems on networks are considered. The domain of definition for the distributed parameter system is given by a graph G. The optimal cost function for control problem is furthe...
详细信息
ISBN:
(纸本)9798350311075
The dynamical, boundary optimal controlproblems on networks are considered. The domain of definition for the distributed parameter system is given by a graph G. The optimal cost function for control problem is further optimized with respect to the shape and topology of the graph O. The small cycle is introduced and the topological derivative of the cost with respect to the size of the cycle is determined. In this way, the singular perturbations of the graph can be analyzed in order to change the topology O. The topological derivative method in shape and topology optimization is a new tool which can be used to minimize the shape functionals under the Partial Differential Equations (PDEs) constraints. The topological derivative is used as well for solution of optimum design problems for graphs. In optimal controlproblems the topological derivative is used for optimum design of the domain of integration of the state equation. As an example, optimal controlproblems are considered on a cross with a small cycle. The state equation is the wave equation on the graph. The boundary control problem by Neumann conditions at a boundary vertex is solved for a tracking cost function. The shape functional is given by the optimal value of the control cost. The topological derivative of the shape functional is determined for the steady state model with the size of a cycle epsilon -> 0. Numerical results for a model problem are presented.
The inherent complexity of large ships makes it challenging to construct appropriate indicator systems for evaluating and selecting optimal ship designs. Knowledge-based expert systems can be reasonable solutions. How...
详细信息
ISBN:
(纸本)9780791886878
The inherent complexity of large ships makes it challenging to construct appropriate indicator systems for evaluating and selecting optimal ship designs. Knowledge-based expert systems can be reasonable solutions. However, this problem needs more rationality and better operability, especially in complicated multi-criteria decision-making (MCDM) problems with numerous indicators and complex structures. This paper aims to present a universal methodological approach for constructing indicator systems in MCDM problems using an improved total interpretive structural modeling (TISM) method. The classical TISM method is extended under group decision-making settings and interval type-2 fuzzy sets (IT2FS) environment to deal with the uncertainties and variances in expert knowledge. To ensure the rationality and operability of indicator system construction, two novel cardinal and ordinal indices are proposed to quantify the degree of group consensus, and an interactive group consensus improvement algorithm is further developed to assist experts in reviewing their opinions to achieve acceptable group consensus. Finally, a case study of constructing a ship-equipment environmental suitability indicator system is examined to illustrate the feasibility and effectiveness of the proposed method, with the results indicating that the improved TISM method can deal with the uncertainties and variances in expert knowledge, promote rationality and operability in indicator system construction, and can be applied to numerous group decision-making problems.
Aiming at the tracking control for an unmanned aerial vehicle (UAV) with uncertainty and external disturbances, an adaptive optimization control method is proposed based on the backstepping method. The model uncertain...
详细信息
This paper introduces NeuroPhysNet, a novel hybrid neural network architecture designed for enhanced prediction and control of cyber-physical systems (CPS). The increasing complexity and dynamic nature of CPS present ...
详细信息
We present Ungar, an open-source library to aid the implementation of high-dimensional optimal controlproblems (OCPs). We adopt modern template metaprogramming techniques to enable the compile-time modeling of comple...
详细信息
The use of Unmanned Ground Vehicles (UGVs) and Unmanned Aerial Vehicles (UAVs) has seen significant growth in the research community, industry, and society. Many of these agents are equipped with communication systems...
详细信息
ISBN:
(纸本)9798350310375
The use of Unmanned Ground Vehicles (UGVs) and Unmanned Aerial Vehicles (UAVs) has seen significant growth in the research community, industry, and society. Many of these agents are equipped with communication systems that are essential for completing certain tasks successfully. This has led to the emergence of a new interdisciplinary field at the intersection of robotics and communications, which has been further driven by the integration of UAVs into 5G and 6G communication networks. However, one of the main challenges in this research area is how many researchers tend to oversimplify either the robotics or the communications aspects, hindering the full potential of this new interdisciplinary field. In this paper, we present some of the necessary modeling tools for addressing these problems from both a robotics and communications perspective, using the UAV communications relay as an example.
A strategy for correcting PID parameters in real time for fuzzy control is proposed for the problem of the difficulty of correcting traditional PID control parameters. Exploring the effect of three PID control paramet...
详细信息
The multi-lane roundabout poses significant challenges for autonomous driving due to its complex road structure and traffic conditions. To address these challenges, this paper proposes a novel Neural Model Predictive ...
详细信息
ISBN:
(纸本)9798350399462
The multi-lane roundabout poses significant challenges for autonomous driving due to its complex road structure and traffic conditions. To address these challenges, this paper proposes a novel Neural Model Predictive control (NMPC)-based decision-making framework that integrates prediction, planning, and control for autonomous vehicles to navigate multi-lane roundabouts. The proposed NMPC framework learns a dynamical model, incorporating interaction data, to accurately predict the behavior of surrounding traffic participants. Multiple candidate static paths are then generated based on the road structure, and the decision-making problem is formulated as a series of parallel static path tracking controlproblems subject to safety constraints. The static path with minimal tracking cost is selected as the target reference path, and the tracking control is generated simultaneously. To enhance computational efficiency, NMPC utilizes a critic network and an actor network to approximate the tracking cost and the control policy, respectively. Experimental evaluation on a multi-lane roundabout simulator, based on a real roundabout in Beijing, demonstrates that the proposed method performs better in terms of driving safety and efficiency compared to several baseline algorithms across various traffic densities.
Recently, the hybrid electric vehicle is more and more popular due to its advantage on the energy solution. Hence, the research of further optimizing the energy management of hybrid electric vehicle is crucial. Beside...
详细信息
The introduction of digitalization contributes to solving the priority task of the Russian Ministry of Emergency Situations - the transition from a system of responding to emergencies to their prevention. The purpose ...
详细信息
暂无评论