A new pattern based Petri net to model sintering production process

2017 ◽  
Vol 40 (9) ◽  
pp. 2771-2778 ◽  
Author(s):  
Jinxia Wu ◽  
Chuang Liu
Keyword(s):  
Production Process ◽  
Petri Net ◽  
Discrete Event ◽  
Main Idea ◽  
Recognition Method ◽  
Pattern Class ◽  
Practical Applications ◽  
State Variable ◽  
Plant Data ◽  
Class Variable

In this paper, a new Petri net model based on pattern recognition method is presented for describing a certain stochastic hybrid systems. The application of this method concerns sintering production process. The main idea consists in describing the variation of patterns over time through the so-called ‘pattern class variable’ rather than state variable or output variable. A new petri net control model is constructed based on pattern class variable. The marks are defined as posterior probability of the cluster. By redefining the marks and transition on the basis of ordinary Petri nets, it can represent any combination of discrete-event and continuous element and has probability property. The simulation results are provided based on real plant data to illustrate the effectiveness of the proposed approach. This method might provide the satisfied results for the practical applications without having the exact mathematical models.

scholarly journals Electrostatic Sensor Application for On-Line Monitoring of Wind Turbine Gearboxes

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3574 ◽  
Author(s):  
Huijie Mao ◽  
Hongfu Zuo ◽  
Han Wang
Keyword(s):  
Wind Turbine ◽  
Wear Debris ◽  
Bench Test ◽  
Recognition Method ◽  
Wind Turbine Gearbox ◽  
Practical Applications ◽  
Electrostatic Induction ◽  
Oil Flow ◽  
On Line ◽  
Application Potential

The oil-line electrostatic sensor (OLES) is a new online monitoring technology for wear debris based on the principle of electrostatic induction that has achieved good measurement results under laboratory conditions. However, for practical applications, the utility of the sensor is still unclear. The aim of this work was to investigate in detail the application potential of the electrostatic sensor for wind turbine gearboxes. Firstly, a wear debris recognition method based on the electrostatic sensor with two-probes is proposed. Further, with the wind turbine gearbox bench test, the performance of the electrostatic sensor and the effectiveness of the debris recognition method are comprehensively evaluated. The test demonstrates that the electrostatic sensor is capable of monitoring the debris and indicating the abnormality of the gearbox effectively using the proposed method. Moreover, the test also reveals that the background signal of the electrostatic sensor is related to the oil temperature and oil flow rate, but has no relationship to the working conditions of the gearbox. This research brings the electrostatic sensor closer to practical applications.

scholarly journals Neutrosophic Number Optimization Models and Their Application in the Practical Production Process

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Angyan Tu ◽  
Jun Ye ◽  
Bing Wang
Keyword(s):  
Production Process ◽  
Optimal Solution ◽  
Optimization Models ◽  
Optimal Solutions ◽  
Practical Applications ◽  
Linear And Nonlinear Programming ◽  
Constrained Conditions ◽  
Minimum Objective Function ◽  
Maximum Minimum ◽  
Neutrosophic Number

In order to simplify the complex calculation and solve the difficult solution problems of neutrosophic number optimization models (NNOMs) in the practical production process, this paper presents two methods to solve NNOMs, where Matlab built-in function “fmincon()” and neutrosophic number operations (NNOs) are used in indeterminate environments. Next, the two methods are applied to linear and nonlinear programming problems with neutrosophic number information to obtain the optimal solution of the maximum/minimum objective function under the constrained conditions of practical productions by neutrosophic number optimization programming (NNOP) examples. Finally, under indeterminate environments, the fit optimal solutions of the examples can also be achieved by using some specified indeterminate scales to fulfill some specified actual requirements. The NNOP methods can obtain the feasible and flexible optimal solutions and indicate the advantage of simple calculations in practical applications.

scholarly journals Development of the electronic physics textbook for students of secondary school

2020 ◽  
Vol 100 (4) ◽  
pp. 87-94
Author(s):  
A.S. Prutko ◽  
◽  
A.S. Kudussov ◽  
E.K. Mussenova ◽  
Zh.T. Kambarova ◽  
...  
Keyword(s):  
Secondary School ◽  
Main Idea ◽  
Control Mode ◽  
Practical Skills ◽  
School Students ◽  
Software Environment ◽  
Practical Applications ◽  
Electronic Textbook ◽  
Is Implementation ◽  
Testing Module

The work the results of using the developed electronic textbook on physics for organizing the independent work of secondary school students is analyzed. The possibilities of an electronic textbook are shown, the advantages of using the textbook in the learning process are noted. For the development of the electronic textbook, the C# programming language was used in the Microsoft Visual Studio software environment. The main idea of developing an electronic textbook is the relationship between theoretical teaching and practical skills. The electronic textbook provides two modes of operation: training mode and control mode, thus the electronic textbook contains a block of theoretical material and a module for interactive testing of students' knowledge. The theoretical material of the textbook has been developed in accordance with the standard curriculum for the subject “Physics”. The interactive testing module includes standard physical problems of different degrees of complexity, as well as practice-oriented problems on physics. A set of practice-oriented problems has been developed, the use of which in the process of teaching physics will allow to ensure the formation of students' theoretical knowledge and practical skills, to prepare students for practical activities.The main advantage of an electronic textbook is interactivity. The novelty of the development of an electronic textbook is implementation in accordance with a new approach aimed at shaping students' knowledge about the practical applications of physics and developing their practical skills.

A Simple Petri Net controller in Discrete Event systems

2012 ◽  
Vol 45 (6) ◽  
pp. 188-193 ◽  
Author(s):  
M. Zareiee ◽  
A. Dideban ◽  
A.A. Orouji ◽  
H. Alla
Keyword(s):  
Petri Net ◽  
Discrete Event Systems ◽  
Discrete Event ◽  
Event Systems

The Growing of Plants by Children—The School-Garden

2019 ◽  
pp. 65-68
Keyword(s):  
Main Idea ◽  
School Gardens ◽  
School Garden ◽  
Practical Applications ◽  
New Varieties

The main idea in this chapter is that the "love of plants should be inculcated in the school." While there "are many practical applications" for children to gain knowledge of "plants and horticulture," Bailey indicates that the knowledge is more than "information of plants themselves." Rather, such knowledge "takes one into the open air… It increases his hold on life." The chapter concludes with types of school gardens: ornamenting the grounds, establishing a collection, making a garden for instruction, and providing a test ground for new varieties.

Petri Net Model Based Design and Control of Robotic Manufacturing Cells

2012 ◽  
pp. 393-408
Author(s):  
Gen’ichi Yasuda
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Manufacturing Systems ◽  
Discrete Event ◽  
Manufacturing Cells ◽  
Modeling And Control ◽  
Complex Manufacturing Systems ◽  
Task Specification ◽  
And Control ◽  
The Coordinator

The methods of modeling and control of discrete event robotic manufacturing cells using Petri nets are considered, and a methodology of decomposition and coordination is presented for hierarchical and distributed control. Based on task specification, a conceptual Petri net model is transformed into the detailed Petri net model, and then decomposed into constituent local Petri net based controller tasks. The local controllers are coordinated by the coordinator through communication between the coordinator and the controllers. Simulation and implementation of the control system for a robotic workcell are described. By the proposed method, modeling, simulation, and control of large and complex manufacturing systems can be performed consistently using Petri nets.

Petri Net Model Based Design and Control of Robotic Manufacturing Cells

2013 ◽  
pp. 385-400 ◽  
Author(s):  
Gen’ichi Yasuda
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Manufacturing Systems ◽  
Discrete Event ◽  
Manufacturing Cells ◽  
Modeling And Control ◽  
Complex Manufacturing Systems ◽  
Task Specification ◽  
And Control ◽  
The Coordinator

The methods of modeling and control of discrete event robotic manufacturing cells using Petri nets are considered, and a methodology of decomposition and coordination is presented for hierarchical and distributed control. Based on task specification, a conceptual Petri net model is transformed into the detailed Petri net model, and then decomposed into constituent local Petri net based controller tasks. The local controllers are coordinated by the coordinator through communication between the coordinator and the controllers. Simulation and implementation of the control system for a robotic workcell are described. By the proposed method, modeling, simulation, and control of large and complex manufacturing systems can be performed consistently using Petri nets.

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