Using Pounds-Solids to Optimize Plant Efficiency

1982 ◽  
Author(s):  
Gordon P. Gerow ◽  
Robert C. Stanley
Keyword(s):  
Automatic Control ◽  
Physical Variable ◽  
Processing Plant ◽  
Engineering Systems ◽  
First Words ◽  
Plant Efficiency

The first words in Dransfield’s book on “Engineering Systems and Automatic Control” are: “A machine or process is restrained to operate in a predetermined manner; that is, it is controlled. Restraint is usually achieved by controlling a selected physical variable vital to the performance of the particular machine.” It is the intent of this paper to propose pounds-solids as the variable, vital to the operation of a citrus processing plant. Contents of this paper describe a methodology for commercially measuring pounds-solids and using this information to optimize plant efficiency. Paper published with permission.

scholarly journals Automation of Batch Production in Paint Industry using PLC

2019 ◽  
Vol 9 (2S4) ◽  
pp. 435-440 ◽  
Keyword(s):  
Automatic Control ◽  
Batch Processing ◽  
Processing Plant ◽  
Programmable Logic ◽  
Short Term ◽  
Batch Production ◽  
Batch Type ◽  
Decision Variables ◽  
Compute Model ◽  
Paint Industry

This paper presents the development of automatic control over batch type production in the paint industry. The automation technique for the manufacturing of paint industry is applied wit0068 the help of programmable Logic Controller. In this task, the analytical compute model for optimizing the functions of the volume processing plant is capable of handling all possible decision variables in the setup. The synthesized function is used in a dominant paint construct plant. This workconcentrate plant is a multi-product, batch processing plant, with a ample variety of products, challenge for various process apparatus at the manufacturing site. The plant under consideration working in accordance with the principle of "order-based" production. Therefore, this application can be classified as a short-term organize of a real case multi-product module alter plant

Teaching Automatic Control of Engineering Systems Using Open Source CH Control System Toolkit and Web-Based Design and Analysis System

2008 ◽  
Author(s):  
Bo Chen ◽  
Yu-Cheng Chou ◽  
Harry H. Cheng
Keyword(s):  
Control System ◽  
Automatic Control ◽  
System Design ◽  
Open Source ◽  
Control Systems ◽  
Control System Design ◽  
Engineering Systems ◽  
Web Based ◽  
Practical Engineering ◽  
Analysis System

Ch Control System Toolkit (CCST) is a software package for design and analysis of control systems. It is implemented as a class with member functions to run in the user-friendly C/C++ interpreter Ch. Based on the CCST, a Web-based Control System Design and Analysis System (WCDAS) has been developed. In this article, using CCST and WCDAS to teach automatic control of engineering systems is presented. Using CCST, students are able to write programs easily with a few lines of C/C++ code to solve practical engineering problems. By solving control system design and analysis problems in C/C++, the programming skills gained in the course are applicable to other areas of engineering. CCST and WCDAS are open source. Students are able to examine the source code to understand the implementation of theories and algorithms in software. Based on CCST and WCDAS, the Web-based Controller/Compensator Design Module (WCCDM) has also been developed for teaching and student learning. Using these Web-based tools, students can perform design and analysis of control systems interactively through a Web browser remotely. The CCST, WCDAS, and WCCDM have been used to teach an undergraduate course on Automatic Control of Engineering Systems at the University of California, Davis. All software packages and teaching materials for this course are available on the internet. They can be downloaded and modified to teach similar courses with different requirements.

scholarly journals Synthesis of Automatic Control Systems for Technological Processes of the Gas-Air Path of the Organic Waste Processing Plant

2020 ◽  
Vol 18 (4) ◽  
pp. 86-105
Author(s):  
Stanislav R. Shakirov ◽  
Alexandr G. Kvashnin ◽  
Artem V. Pisarev
Keyword(s):  
Mathematical Modeling ◽  
Automatic Control ◽  
Combustion Chamber ◽  
Pilot Plant ◽  
Organic Waste ◽  
Control Method ◽  
Industrial Plant ◽  
Processing Plant ◽  
Technological Parameters ◽  
Technological Processes

A research team from ICT SB RAS is actively developing a system to control a pilot plant for processing organic waste automatically. The pilot plant can produce thermal energy and energy carriers (solid products, e.g. bio-coal, liquid products, e.g. bio-oil, and gaseous products, i.e. synthesis gas), for example, from biomass with different chemical composition and physical properties. The equipment can process "complex" types of waste characterized mainly by high moisture and high ash content. During tests of the pilot plant, the complexity of stabilizing the parameters of technological processes and ensuring the stability and reliability of operation of the equipment of the complex as a whole were identified. This is especially important when implementing high-temperature modes of biomass processing. In order to primarily solve these most important tasks, an automatic control system of the plant is being created. When a system for automatic control of technological parameters of the gas-air path of the pilot-industrial plant is developed, a mathematical model that describes the dynamic characteristics of the gas and air paths under various throughput rates of the plant was used. When determining mathematical models, a two-way relationship between the gas path and air path was identified (interchannel connections). When technologically complex real objects of control are being automated, in the inaccuracy of a priori information about the object, when the system operates in various uncertain external and internal situations, disturbing influences, a robust control method should be used. PID controllers were selected as corrective devices for stabilizing the technological parameters that characterize the operation mode of the gas-air path of the plant including pressure in the lower part and rarefaction in the upper part of the combustion chamber. The most appropriate method for determining the PID controller settings has been elected. Synthesis and simulation of the operation of the controllers of the pressure in the lower part and rarefaction in the upper part of the combustion chamber are performed. Basing on the results of mathematical modeling, the efficiency of the controllers of the pressure in the lower part and the rarefaction in the upper part of the combustion chamber for various loads of the plant has been shown, and their stability reserves by amplitude and phase are determined. The results of mathematical modeling of the stabilization contours of the technological parameters of the gas-air path of the plant are presented for two cases: without inter-channel connections and without the account of these connections. A simulation of the joint operation of the control circuits of the gas-air path of the plant is performed. Compensators for adjacent (interchannel) connections of the gas and air paths of the plant have been developed. The advantage of the proposed automation schemes is shown.

Respect-PTSD: Re-Engineering Systems for the Primary Care Treatment of PTSD

2012 ◽  
Author(s):  
Paula Schnurr ◽  
Matthew Friedman ◽  
Thomas Oxman ◽  
Allen Dietrich ◽  
Mark Smith ◽  
...  
Keyword(s):  
Primary Care ◽  
Engineering Systems ◽  
Care Treatment
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