Research on Architecture for Multi-UAV Systems Based on Autonomous Cooperation

2015 ◽  
Vol 713-715 ◽  
pp. 825-828 ◽  
Author(s):  
Peng Fei Peng ◽  
Li Gong ◽  
Qian Yu
Keyword(s):  
Design Process ◽  
System Architecture ◽  
Cooperative Control ◽  
Engineering Practice ◽  
Reconstruction Method ◽  
Functional Requirements ◽  
Multi Uav ◽  
Application Prospects

The problems confronting multi-UAV systems when carrying out tasks are described from the perspective of architecture. According to the traits of multi-UAV systems and the needs when performing combat tasks, the functional requirements are analyzed. And a scheme of the system architecture for multi-UAV systems based on autonomous cooperation is put forward according to the thoughts of autonomous cooperative control. Meanwhile, the architecture reconstruction method of f multi-UAV system architecture under conditions of uncertainty is further studied. The design process showed that: the proposed architecture can meet the functional requirements and has good application prospects in future engineering practice.

Approach to system functional requirements extraction and methods for its implementation based on the design of user activities in the interface using architectural schemes

2021 ◽  
pp. 100-105
Author(s):  
A.N. Belikov ◽  
◽  
S.A. Belikova
Keyword(s):  
Information Systems ◽  
Natural Language ◽  
Design Process ◽  
Process Model ◽  
Main Idea ◽  
Direct Interaction ◽  
Functional Requirements ◽  
End User ◽  
System Developer ◽  
Statistical Studies

The existing approach to requirements extraction is that the requirements are formed by the system developer through direct interaction with the customer using a number of methods (for example, interviewing; prototyping; analysis of use cases; user stories; seminars, etc.). In this case, most often the requirements are formed by the developer himself, taking into account the opinion of the customer’s representative. The disadvantage of the existing approach is the problem of loss of knowledge transferred from the customer’s representatives to the developer, which results in the failure of projects, which is recorded by the existing statistics. As statistical studies show, more than half of projects for the creation of information systems (IS) are failures or require changes (in terms of budget, time and customer satisfaction). In modern research in the field of__ design and development of information systems, there is a tendency to involve the end user (customer) in the design process. To develop this idea, an approach is proposed to involve the user in the process of extracting requirements, where the developer will no longer be the person forming the requirements. The main idea of the approach is to develop special tools that allow you to independently transform the customer’s natural language into such a form of representation of the model of the process of solving professional problems, from which an interface will be built, which will allow extracting functional requirements from the unity (process model and interface).

A Novel Embedded System Architecture for Fire Detection Based on Image Processing

2014 ◽  
Vol 608-609 ◽  
pp. 454-458
Author(s):  
Wei Bai ◽  
Chen Yuan Hu
Keyword(s):  
Image Processing ◽  
Embedded System ◽  
System Architecture ◽  
Cooperative Control ◽  
Processing System ◽  
Fire Detection ◽  
System Level ◽  
High Definition ◽  
The Embedded System ◽  
Pass Through

This paper presents novel logic/software co-work architecture for embedded high definition image processing platform, which is built by the considerations of system level, board hardware level, and the tasks partition between CPU processing and programmable logic based on the latest launched System on Chip Field Programmable Gate Array (Soc FPGA) – Xilinx ZC7020. For this case, we comprehensive analyze of the critical data paths: the uniform Advanced Extensible Interface (AXI) processing between processing system (PS) and processing logic (PL), including high definition video pass through PL to PS and PS software processing send to PL for speed up. We have included the transplant of opensource Linux, multiprocessing cooperative control and boot loader in PS side. Since the general platform is proposed, a fire detection approach based on high definition image processing is implemented. Experiment results indicated the feasibility and universality of the embedded system architecture.

scholarly journals A Coalition Formation Game Approach for Efficient Cooperative Multi-UAV Deployment

2018 ◽  
Author(s):  
Lang Ruan ◽  
Jin Chen ◽  
Qiuju Guo ◽  
Han Jiang ◽  
Yuli Zhang ◽  
...  
Keyword(s):  
Coalition Formation ◽  
Data Transmission ◽  
Cooperative Control ◽  
Base Station ◽  
Transmission Mechanism ◽  
Coalition Formation Game ◽  
Stable Partition ◽  
Considerable Benefit ◽  
Formation Game ◽  
Multi Uav

UAV cooperative control has been an important issue in UAV-assisted sensor network, thanks to the considerable benefit obtained from cooperative mechanism of UAVs being applied as a flying base station. In coverage scenario, the tradeoff between coverage performance and transmission performance often makes deployment of UAVs fall into a dilemma, since both indexes are related to the distance between UAVs. To address this issue, UAV coverage and data transmission mechanism is analyzed in this paper, then an efficient multi-UAV cooperative deployment model is proposed. The problem is also modeled as a coalition formation game (CFG). The CFG with Pareto order is proved to have a stable partition. Then, an effective approach consisting of coverage deployment and coalition selection is designed, wherein UAVs can decide strategies cooperatively to achieve better coverage performance. Combining analysis of game approach, a coalition selection and position deployment algorithm based on Pareto order (CSPDA-PO) is designed to execute coverage deployment and coalition selection. Finally, simulation results are shown to validate the proposed approach based on efficient multi-UAV cooperative deployment model.

Information Architecture for Design Tolerancing: From Conceptual to the Detail Design

1999 ◽  
Author(s):  
U. Roy ◽  
R. Sudarsan ◽  
R. D. Sriram ◽  
K. W. Lyons ◽  
M. R. Duffey
Keyword(s):  
Design Process ◽  
Tolerance Analysis ◽  
Detailed Knowledge ◽  
Functional Requirements ◽  
Physical Entity ◽  
Data Set ◽  
Analysis And Synthesis ◽  
And Behavior ◽  
Synthesis Of Tolerances ◽  
Assembly Models

Abstract Tolerance design is the process of deriving a description of geometric tolerance specifications for a product from a set of specifications on the desired properties of the product. Existing approaches to tolerance analysis and synthesis entail detailed knowledge of geometry of assemblies and are mostly applicable during advanced stages of design, leading to a less than optimal design process. During the design process of assemblies, both assembly structure and associated tolerance information evolve continuously and significant gains can be achieved by effectively using this information to influence the design of an assembly. Any pro-active approach to the assembly or tolerance analysis in the early design stages will involve decision making with incomplete information models. In order to carry out early tolerance synthesis and analysis in the conceptual stages of the product design, we need to devise techniques for representing function-behavior-assembly models that will allow analysis and synthesis of tolerances, even with the incomplete data set. A ‘function’ (what the system is for) is associated with the transformation of an input physical entity into an output physical entity by the system. The problem or customer’s need, initially described by functional requirements on an assembly, and associated constraints on the functional requirements derives the concept of an assembly. This specification of functional requirements and constraints define a functional model for the assembly. Many researchers have studied functional representation (function based taxonomy and ontology), function to form mapping, and behavior representation (behavior means how the system/product works). However, there is no comprehensive function-assembly-behavior (FAB) integrated model. In this paper, we discuss the integration of function, assembly, and behavior representation into a comprehensive information model (FAB models). To do this, we need to develop appropriate assembly models and tolerance models that would enable the designer to incrementally understand the build-up or propagation of tolerances (i.e., constraints) and optimize the layout, features, or assembly realizations. This will ensure ease of tolerance delivery.

scholarly journals Research on the Multiagent Joint Proximal Policy Optimization Algorithm Controlling Cooperative Fixed-Wing UAV Obstacle Avoidance

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4546
Author(s):  
Weiwei Zhao ◽  
Hairong Chu ◽  
Xikui Miao ◽  
Lihong Guo ◽  
Honghai Shen ◽  
...  
Keyword(s):  
Reinforcement Learning ◽  
Attitude Control ◽  
Cooperative Control ◽  
Learning Algorithm ◽  
State Equations ◽  
Learning Agent ◽  
Environmental Adaptability ◽  
Decentralized Execution ◽  
Policy Optimization ◽  
Multi Uav

Multiple unmanned aerial vehicle (UAV) collaboration has great potential. To increase the intelligence and environmental adaptability of multi-UAV control, we study the application of deep reinforcement learning algorithms in the field of multi-UAV cooperative control. Aiming at the problem of a non-stationary environment caused by the change of learning agent strategy in reinforcement learning in a multi-agent environment, the paper presents an improved multiagent reinforcement learning algorithm—the multiagent joint proximal policy optimization (MAJPPO) algorithm with the centralized learning and decentralized execution. This algorithm uses the moving window averaging method to make each agent obtain a centralized state value function, so that the agents can achieve better collaboration. The improved algorithm enhances the collaboration and increases the sum of reward values obtained by the multiagent system. To evaluate the performance of the algorithm, we use the MAJPPO algorithm to complete the task of multi-UAV formation and the crossing of multiple-obstacle environments. To simplify the control complexity of the UAV, we use the six-degree of freedom and 12-state equations of the dynamics model of the UAV with an attitude control loop. The experimental results show that the MAJPPO algorithm has better performance and better environmental adaptability.

scholarly journals Design of a tablet holder with the help of Axiomatic Design International Conference of Axiomatic Design 2017

2018 ◽  
Vol 223 ◽  
pp. 01009
Author(s):  
Auðunn Herjólfsson ◽  
Haraldur Helgason ◽  
Sindri S. Ingvason ◽  
þráinn þórarinsson ◽  
Joseph Timothy Foley
Keyword(s):  
Design Process ◽  
Axiomatic Design ◽  
Design Parameters ◽  
Smart Devices ◽  
Functional Requirements ◽  
Modern Life ◽  
Customer Needs ◽  
International Conference ◽  
Viewing Experience

With the explosion of smart devices, tablets can currently be found everywhere. From schools to kiosks to watching movies in bed, these devices are prevalent everywhere in modern life. The problem with watching movies in bed using tablets is the necessity of hand usage. The market currently holds a few products that attempt to solve this, but none truly frees the user, allowing them hands-free usage with an easy exit of the bed. In this paper, we will describe a design which, utilizing axiomatic design, will out-perform anything currently existing in the same field, by giving a stable viewing experience while fitting to nearly any bed or sofa. Axiomatic Design ensured a comprehensive design process by ensuring customer needs were transformed into carefully thought out functional requirements and design parameters while maintaining modularity.

Product Reverse Engineering Based on Growth Design Process

2007 ◽  
Author(s):  
Kezheng Huang
Keyword(s):  
Reverse Engineering ◽  
Design Process ◽  
System Architecture ◽  
Conceptual Structure ◽  
Prototype System ◽  
Fixture Design ◽  
Engineering Technology ◽  
Key Techniques ◽  
Process Reconstruction ◽  
Structure And Design

Current reverse engineering approach is an effective way for technology progress of developing countries. Based on analysis of existing reverse engineering technology, a new concept of Product Reverse Engineering (PRE) is proposed and its theoretical framework is discussed first in this paper in order to extend its application from components to the overall product structure and design process. Then a brief introduction is made to the technical system architecture and key techniques for PRE, which include the rapid solid modeling, integrating with existing CAD systems through STEP file, assembly modeling for conceptual structure, and reverse design process reconstruction. Finally, a prototype system PRE-DARFAD is developed with initial verification by a fixture design example.

A Model-Based Failure Identification and Propagation Framework for Conceptual Design of Complex Systems

2012 ◽  
Author(s):  
Hoda Mehrpouyan ◽  
David C. Jensen ◽  
Christopher Hoyle ◽  
Irem Y. Tumer ◽  
Tolga Kurtoglu
Keyword(s):  
System Architecture ◽  
Early Identification ◽  
Mitigation Strategies ◽  
Functional Requirements ◽  
Environmental Disturbances ◽  
Safety Issues ◽  
Model Based ◽  
Potential Safety ◽  
Failure Propagation ◽  
Failure Identification

In this paper, a model-based failure identification and propagation (MFIP) framework is introduced for early identification of potential safety issues caused by environmental disturbances and subsystem failures within a complex avionic system. The MFIP framework maps hazards and vulnerability modes to specific components in the system and analyzes failure propagation paths. Block definition diagrams (BDD) are used to represent system functional requirements in the form of demonstrating the relationships between various requirements, their associations, generalizations, as well as dependencies. These concept models help to identify hazardous factors and the relationships through which their detrimental effects are transferred through-out the proposed system architecture. As such, the approach provides the opportunity to reduce costs associated with redesign and provide important information on design viability. Using this technique, designers can examine the impacts of environmental and subsystem risks on the overall system during the early stages of design and develop hazard mitigation strategies.

Design and Verification of a New Computer Controlled Seating Buck

2006 ◽  
Author(s):  
Nanxin Wang ◽  
Vijitha Kiridena ◽  
Gianna Gomez-Levi ◽  
Jian Wan ◽  
Steven Sieczka ◽  
...  
Keyword(s):  
Design Process ◽  
Cycle Time ◽  
Dimensional Accuracy ◽  
Vehicle Design ◽  
Functional Requirements ◽  
Package Design ◽  
Design Concepts ◽  
Design Cycle ◽  
Computer Controlled ◽  
High Level

Appraising vehicle package design concepts using seating bucks — physical prototypes representing vehicle package, is an integral part of the vehicle package design process. Building such bucks is costly and may impose substantial burden on the vehicle design cycle time. Further, static seating bucks lack the flexibility to accommodate design iterations during the gradual progression of a vehicle program. A “Computer controlled seating buck”, as described in this paper, is a quick and inexpensive alternative to the traditional seating bucks with the desired degree of fidelity. It is particularly useful to perform package and ergonomic studies in the early stages of a vehicle program, long before the data is available to build a traditional seating buck. Such a seating buck has been developed to accommodate Ford vehicle package design needs. This paper presents the functional requirements, the high level conceptual design of how these requirements are realized, and the methods to verify, improve and sustain the dimensional accuracy and capability of the new computer controlled seating buck.

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