Evolvable hardware: on the automatic synthesis of analog control systems

2002 ◽  
Author(s):  
R.S. Zebulum ◽  
M. Vellasco ◽  
M.A. Pacheco ◽  
H.T. Sinohara
Keyword(s):  
Control Systems ◽  
Evolvable Hardware ◽  
Automatic Synthesis ◽  
Analog Control

scholarly journals THE AUTOMATIC SYNTHESIS OF PETRI NETS BASED ON THE FUNCTIONING OF ARTIFICIAL NEURAL NETWORK

2021 ◽  
pp. 84-92
Author(s):  
A. A. Gurskiy ◽  
A. V. Denisenko ◽  
S. M. Dubna
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Automatic Control ◽  
Petri Nets ◽  
Control Systems ◽  
Automatic Synthesis ◽  
Temporal Characteristics ◽  
Complex Control ◽  
Automatic Control Systems ◽  
Artificial Neural

Context. The important task was solved during the scientific research related to the development of the methods for automatic synthesis of Petri nets while tuning up of the coordinating automatic control systems. The importance of development of these methods is due to the evolution of intelligent systems. These systems provide the automation of labor intensive processes in the particular case this is the tuning of the certain type of complex control systems. Objective. The purpose of the scientific work is to minimize the time and automation of process in tuning of the multilevel coordinating automatic control systems. Method. The principle of automatic synthesis of Petri nets and the implementation of certain algorithms for tuning complex control systems based on the functioning of an artificial neural network are proposed. The mathematical description of the method for changing the coefficients in neural connections of network in the synthesis of Petri nets is presented. Results. The experiments were conducted in the Matlab\Simulink 2012a environment. These experiments were bound to the joint functioning of an artificial neural network and Petri nets. The functioning of Petri nets was presented in the Matlab \ Simulink environment using Statflow diagrams. As a result of the experiments we have obtained the temporal characteristics of the functioning of artificial neural network providing the composition of Petri nets. The fundamental suitability of using artificial neural network to provide the automatic composition of Petri nets was determined on the basis of analysis of temporal characteristics. Conclusion. The problem linked to the development of system for the joint functioning of neural network and Petri nets for the formation of algorithms and sequential calculations was solved in this work. Thus the method of automatic synthesis of Petri nets and the method of developing of the certain algorithms based on the functioning of a neural network were further developed.

Full Authority Digital Control (FADC) Local Operating Panels (LOCOPs)…The Foundation for Improvement

2011 ◽  
Author(s):  
Christopher Corso ◽  
Andrew Bigley ◽  
Brian Connery ◽  
Jeremy Nichols
Keyword(s):  
Control System ◽  
Control Systems ◽  
Digital Control ◽  
Power Plants ◽  
Network Connectivity ◽  
Assessment System ◽  
Loop Control ◽  
Digital Control Systems ◽  
Analog Control ◽  
System Data

Full Authority Digital Control systems are the premier control system. The applications are limitless (motorcycles to power plants and everything in between). Over the past 15 years, the US Navy has worked successfully with Woodward Governor Co. to develop and implement FADC LOCOPs for use in a number of applications including DDG and CG class ships gas turbine generators. The FADC LOCOPs provide closed loop control features as did the old analog control systems. But the FADC LOCOPs add the ease and speed of control improvements via software change, constant data monitoring/recording and network connectivity. The network connectivity advantage is still early in development; however this key feature of the control system opens up many doors. Distance support can be taken to an entirely new level via the network. Imagine a setup where if the control detects an abnormality…an email containing control system data gets sent to the blackberry of the In Service Engineering Agent (ISEA) so immediate action can be taken to maintain system reliability and reduce overall system cost. This future can help save money and avoid expensive catastrophic failure via condition based maintenance. In this future, it is possible that eventually the ISEA suggestions can be prompted right back to the FADC LOCOP so the sailors onboard can communicate with the ISEA via the FADC LOCOP. Essentially, every ship could have the ISEA (or an ISEA representative)onboard 24 hours a day seven days a week via FADC LOCOP communicating over a network. The system is not this evolved yet. However, several Navy Programs are working in conjunction towards a similar future including DDG Modernization and Integrated Condition Assessment System (ICAS) via Maintenance Engineering Library Server (MELS) and Integrated Performance Analysis Reports (IPAR). FADC LOCOPs are the foundation upon which these improvements rely to be implemented…thus the premier control system.

scholarly journals Developments in Programmable Analog Control Systems

1974 ◽  
Author(s):  
J. R. Dent ◽  
G. D. Bergman
Keyword(s):  
Control System ◽  
Control Systems ◽  
Gas Turbine ◽  
Low Cost ◽  
Computer Control ◽  
Analog Computer ◽  
Basic Element ◽  
Programmable Analog ◽  
Analog Control ◽  
Optimum Solution

The advantages of programmable control systems for gas turbine engines have been recognized for some time. In the exotic climate of the aerospace industry some progress has been achieved by the use of digital computer control. This approach, however, cannot be justifed on an economic basis for industrial or vehicular applications. A programmable analog control system is described which provides the optimum solution to the twin problems of control capability and low cost. The basic element of this system is an analog computer which is programmed from a stored digital program. This computer performs calculations directly on sensor signals in analog form to provide analog signals that can be used directly to drive the system actuators. This programmable analog computer is described in detail, and an example is given of its application to a practical gas turbine control system. The size, cost, and reliability of the final programmable analog control system is shown to be attractive.

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