The design of an automatic patching system

SIMULATION ◽  
1968 ◽  
Vol 10 (6) ◽  
pp. 281-288 ◽  
Author(s):  
David A. Starr ◽  
Jens J. Jonsson
Keyword(s):  
Control System ◽  
Digital Computer ◽  
Analog Computer ◽  
Master Of Science ◽  
The Third ◽  
Specialized Software ◽  
Work Done ◽  
Switching Devices

An automatic patching system for analog computers is proposed. The system patches any set of component ter minals together, yet size and cost are practical. The design is accomplished in three steps: First, a "model" analog computer is defined and its components divided into modules. Components within a module connect to one another through an "intraface" which allows any terminal to connect to any other ter minal. Problem sections are patched within the modules and then joined together by an "intermodular" trunking system. Secondly, the principle of module chaining permits in dividual modules to access a limited number of other modules, rather than all other modules. This reduces the number of patching switches required by the intermodular trunking system and reduces the overall number of switches required. The third step, called concentration, brings the required number of patching switches down to a practical value by assuming that all analog computer terminals will not be in use at once. Switching devices called "concentrators" exploit this fact to reduce switch requirements. The automatic patching system is driven by a digital computer under control of specialized software, and to gether with the automatic patching control system it can patch large problems in times of the order of fifteen sec onds. The information in this paper is a result of work done for a Master of Science thesis.1

Optimization using a remote control console for a digital computer

SIMULATION ◽  
1966 ◽  
Vol 7 (1) ◽  
pp. 36-41 ◽  
Author(s):  
D.B. Kirby
Keyword(s):  
Digital Computer ◽  
Analog Computer ◽  
General Purpose ◽  
Control Console ◽  
Current Interaction ◽  
Equipment Configuration ◽  
Tion System ◽  
Work Done ◽  
Machine Interaction ◽  
Param Eters

A general-purpose optimization program, using the meth ods of steepest descent and multidimensional Newton- Raphson, has been developed for the IBM 7094. The program can be used independently or as part of a man- machine optimization system in which the engineer can quickly appraise the effect of changes in problem param eters. Man-machine interaction at a remote location is provided through an experimental console which con sists of a Packard-Bell PB-250 computer and associated input-output equipment. The program and equipment configuration used for interaction will be described and an example of network optimization using this system will be presented. An optimization scheme which is designed for a digital computer offers a more sophisticated strategy and better accuracy than a scheme designed for an analog computer. The current interaction system is of limited form; never theless, work done with it has aided in defining the ob jectives for a more flexible man-digital machine interac tion system.

scholarly journals Calibration of Transducers and of a Coil Compression Spring Constant on the Testing Equipment Simulating the Process of a Pallet Positioning in a Rack Cell

2019 ◽  
Vol 9 (1) ◽  
pp. 631-640 ◽  
Author(s):  
Leopold Hrabovský ◽  
David Dluhoš
Keyword(s):  
Control System ◽  
Strain Gauge ◽  
Testing Equipment ◽  
Pressure Force ◽  
The Third ◽  
Force Transducers ◽  
Compression Spring ◽  
Computer Controlled ◽  
Automated Process ◽  
Principal Design

AbstractIn a parking house with KOMA TOWER computer-controlled automated parking system it happens that a control system is locked out of service after a pallet has failed to reach the required position during the shifting of pallets, loaded with cars, into rack cells.In this paper is described testing equipment designed by the Institute of Transport, Faculty of Mechanical Engineering, VŠB Technical University of Ostrava for the purpose of simulating the process of pallets shifting into the rack cells in order that the frequency of error messages from the control system during the automated process of cars positioning in rack cells in the parking house may be limited.The paper details two completed parts of the designed testing equipment which provide for the calibration of strain-gauge force transducers and for the detection of coil compressive spring compression in relation to acting pressure force.The description of the third, principal design part will be provided in the next paper, together with the experimentally measured acting forces which generate, in both horizontal and vertical directions, as a pallet brake pulley rolls along a brake haunch length.

scholarly journals Some Problems of Perspective Planning in Pakistan

1964 ◽  
Vol 4 (2) ◽  
pp. 193-202
Author(s):  
Said Hasan
Keyword(s):  
Policy Making ◽  
Time Horizon ◽  
Close Relation ◽  
The Third ◽  
Preceding Period ◽  
The Subject ◽  
Perspective Planning ◽  
Economic Future ◽  
Work Done

The growing confidence of Pakistan's planners in the nation's economic future is indicated by the boldness of their successive plans and by the lengthening of their time horizon. As far as the latter is concerned, the First Five-Year Plan did not reflect any thinking on economic and social development beyond a specific five-year period; the Second Plan, however, contained some remarks on long-term growth; the Third Plan is being prepared in close relation to the work being done on the Perspective Plan. What fifteen years ago would have been regarded as a waste of time is now considered to be of basic import¬ance for sound planning. What nobody dared think about in the earlier days is now the subject of serious analysis and policy-making. The need for a Perspective Plan is there not only from an economic angle but there are also sound political reasons for it. From the economic angle, we realized that the five-year periods chosen for our plans are only arbitrary periods in a process stretching over a much longer time. Our decisions and policies during one plan influence the pattern of growth in the next one, and influence also the effectiveness of established policies. Therefore, any particular five-year plan has to be part of a whole chain of plans, all fitting together and building further on the work done in the preceding period.

scholarly journals Objektivnost različitih načina procjenjivanja školskih pisanih zadaća

2018 ◽  
Vol 29 (6) ◽  
Author(s):  
Tomislav Grgin ◽  
Bogdana Marinković
Keyword(s):  
Middle School ◽  
Third Graders ◽  
School Work ◽  
The Third ◽  
School Subjects ◽  
The Subject ◽  
Work Done

The investigation was conducted In order to evaluate the objecitivily of the three ways of grading school work: classical way which is used most in schools, then grading with the help of "standard notebook" lor the grade "C" and the grading of work comparatively in pairs. The subject of evaluation was the school work of the third-graders in middle school. Subjects were history and biology, The independent graders were the teachers of these subjects from different middle schools.The results showed that all of these ways of grading do not ensure the same objectivity of grades. The least objective is the classical way, more reliable is one with "standard notebook" and relatively most reliable is the comparison of school work done in pairs.

Design of a Disturbance Accommodating Adaptive Control System and Its Application to a DC-Servo Motor System With Coulomb Friction

1988 ◽  
Vol 110 (4) ◽  
pp. 343-349 ◽  
Author(s):  
P. N. Nikiforuk ◽  
K. Tamura
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Coulomb Friction ◽  
Motor System ◽  
Position Control ◽  
Adaptive Controller ◽  
Analog Computer ◽  
Adaptive Control System ◽  
Servo Motor ◽  
Analytical Functions

This paper discusses the design of a model reference type of adaptive control system for a linear unknown plant with system and observation disturbances. The disturbances are assumed to be approximately expressed by step, sinusoidal, and other analytical functions. The design of a controller, called a disturbance accommodating adaptive controller (DAAC), which eliminates the effect of these disturbances at the plant output, is described. Two types of bias DAAC are given as examples and are applied to the adaptive control of a DC-servo motor system. The plant (the DC-servo system) consists of two unknown loads connected through an electrical clutch and Coulomb friction. The effect of the friction on the plant is considered as an unknown bias disturbance and the DAAC is implemented on an analog computer. Experimental results for the position control of the DAAC system are given.

The law of the sea and the deep seabed

1978 ◽  
Vol 290 (1366) ◽  
pp. 21-31
Keyword(s):  
United Nations ◽  
International Law ◽  
Mineral Resources ◽  
Law Of The Sea ◽  
International Agreement ◽  
Exploration And Exploitation ◽  
The Third ◽  
Sea Bed ◽  
The Law ◽  
Work Done

It is the object of the third United Nations Conference on the Law of the Sea to obtain broad international agreement on the limits to the territorial sea, on that area beyond these limits within which the coastal state may exercise rights over living and non-living resources and on the nature and manner of exercise of those rights. The Conference is also required to establish an international regime to deal with the exploration and exploitation of the deep seabed beyond the limits of coastal states’ rights. The work done by the Conference in five sessions since 1973 will have its effect on international law and practice but, partly owing to differences between the view-points of less industrialized and the more industrialized states (not confined to marine matters), the global solution essential for the orderly regulation of movement of shipping, scientific research and development of fisheries and sea-bed mineral resources may yet elude the Conference, to the detriment of the participating states and of the international community as a whole.

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