Selective Control Program for the Pear Pest Complex in Southern Oregon

P. H. Westigard; L. J. Gut; W. J. Liss

doi:10.1093/jee/79.1.250

On the systematic method of conditional control program execution by a PLC

Bulletin of the Polish Academy of Sciences Technical Sciences ◽

10.1515/bpasts-2016-0018 ◽

2016 ◽

Vol 64 (1) ◽

pp. 161-170 ◽

Cited By ~ 2

Author(s):

A. Milik ◽

M. Chmiel ◽

E. Hrynkiewicz

Keyword(s):

Program Analysis ◽

Formal Method ◽

Control Program ◽

Program Execution ◽

Task Partitioning ◽

Selective Control ◽

Conditional Control ◽

Changes Detection ◽

Plc Program ◽

Selective Program

Abstract The paper presents an original idea of the selective control program execution that allows significant response time reduction. The exhaustive analysis of the PLC program performance is given. An analytic approach explains the idea of the selective control program evaluation and gives the requirements for its feasibility. There is presented a systematic and formal method of program analysis based on a data flow graph approach. The method generates acyclic graph from the control program that is subject of optimization, variable allocation and instruction generation. The graph approach allows determining variables dependencies and task partitioning required by selective program execution. The method utilize the hardware supported variable changes detection. It is transparent for system operation and enables evaluation of blocks that require update.

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Automated mineral analysis in TASK8

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100134661 ◽

1990 ◽

Vol 48 (2) ◽

pp. 212-213

Author(s):

William F. Chambers ◽

Arthur A. Chodos ◽

Roland C. Hagan

Keyword(s):

National Laboratory ◽

Control Program ◽

Mineral Analysis ◽

Alamos National Laboratory ◽

Mineral Phase ◽

Los Alamos National Laboratory ◽

California Institute Of Technology ◽

Mineral Phases ◽

Letter Code ◽

Institute Of Technology

TASK8 was designed as an electron microprobe control program with maximum flexibility and versatility, lending itself to a wide variety of applications. While using TASKS in the microprobe laboratory of the Los Alamos National Laboratory, we decided to incorporate the capability of using subroutines which perform specific end-member calculations for nearly any type of mineral phase that might be analyzed in the laboratory. This procedure minimizes the need for post-processing of the data to perform such calculations as element ratios or end-member or formula proportions. It also allows real time assessment of each data point.The use of unique “mineral codes” to specify the list of elements to be measured and the type of calculation to perform on the results was first used in the microprobe laboratory at the California Institute of Technology to optimize the analysis of mineral phases. This approach was used to create a series of subroutines in TASK8 which are called by a three letter code.

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A computer-control program for TEM in situ fatigue experiments

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155074 ◽

1989 ◽

Vol 47 ◽

pp. 620-621

Author(s):

Kenneth S. Vecchio ◽

John A. Hunt

Keyword(s):

Slow Crack Growth ◽

Computer Control ◽

Control Program ◽

Video Tape ◽

Computer Control System ◽

Transmission Electron ◽

In Situ Experiments ◽

Tremendous Amount ◽

And Control

In-situ experiments conducted within a transmission electron microscope provide the operator a unique opportunity to directly observe microstructural phenomena, such as phase transformations and dislocation-precipitate interactions, “as they happen”. However, in-situ experiments usually require a tremendous amount of experimental preparation beforehand, as well as, during the actual experiment. In most cases the researcher must operate and control several pieces of equipment simultaneously. For example, in in-situ deformation experiments, the researcher may have to not only operate the TEM, but also control the straining holder and possibly some recording system such as a video tape machine. When it comes to in-situ fatigue deformation, the experiments became even more complicated with having to control numerous loading cycles while following the slow crack growth. In this paper we will describe a new method for conducting in-situ fatigue experiments using a camputer-controlled tensile straining holder.The tensile straining holder used with computer-control system was manufactured by Philips for the Philips 300 series microscopes. It was necessary to modify the specimen stage area of this holder to work in the Philips 400 series microscopes because the distance between the optic axis and holder airlock is different than in the Philips 300 series microscopes. However, the program and interfacing can easily be modified to work with any goniometer type straining holder which uses a penrmanent magnet motor.

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