SU437102A1 - Device for modeling equipment loading tasks - Google Patents

Description

The invention relates to computing and is intended for the operational management of production. It simulates the activities of shops with a discontinuous production method. The device is designed to analyze the shop's schedule plans with their subsequent improvement, determine the maximum number of products, as well as the optimal number and type of machines required to carry out the production program, optimal connections between machines using conveyors or other lines when designing new enterprises.

A device for simulating equipment loading tasks is known, which contains units for modeling the input and output and units for modeling equipment productivity, interconnected according to the topology of the graph under study.

The purpose of the invention is to increase the speed of the device. For its implementation in the device, each unit for simulating the arrival of the original product is made in the form of a first adjustable pulse generator and the first pulse counter connected in series, each unit for simulating the finished product arrival is made in the form of a second pulse counter, and

2

The unit for modeling the equipment productivity is made in the form of a second adjustable pulse generator, a reversible pulse counter and an adder, the output of the second adjustable pulse generator is connected to one and the output of an adder is connected to another input of the reversible pulse counter. The drawing shows a block diagram of the device.

It contains blocks 1 for simulating the receipt of initial products, blocks 2 for modeling the productivity of equipment, blocks 3 for modeling the receipt of finished products.

Block 1 consists of an adjustable hollow generator 4 and the first pulse counter 5. The generator output is connected to the input of the counter 5, as well as to the input of the block 2.

Unit 2 consists of a similar second pulse generator 4, a reversible counter 6 and an adder 7, the output of which is connected to the input of a reversible counter, which produces the addition of incoming pulses.

In the diagram, it is marked with an @ sign. The output of the generator 4 is connected to the input of the counter 6, which produces the subtraction of pulses and is indicated by the sign 0. The outputs of the adder are also the outputs of the node, the outputs of the node are also the output of the adder 7.

Block 3 is a second counter, similar to counter 5 of block 1.

For the device to work, it is necessary to pre-set the initial data. Using adjustable pulse generators in blocks 1, pulse frequencies are set that are proportional to the frequencies of arrival of parts from warehouses to the workshop through various channels. Adjustable generators in blocks 2 are set frequency, proportional to the productivity of machine tools or other equipment, i.e., the duration of machining parts. The counters are set to zero. The inputs and outputs of the blocks are made in the form of clamps. Using flexible wires with lugs or other switching means, the nodes are previously connected to each other according to the topology of the graph under study.

Following this, for a certain time, all the pulse generators are closed at the same time. After the generators are turned off, the readings of the counters of blocks 2 are analyzed. A negative result of the counters shows that the machine is underloaded, the positive one - the machine is overloaded. After analyzing the readings of all the blocks, the corresponding switching is performed between them, the meter readings are reset to "Zero and the generators are turned on again. A wire of several such procedures, it is possible to achieve such a distribution of connections, in which, after turning off the generators, all the counters of blocks 2 would show results close to zero. This indicates nominal machine loads. It is advisable to use such machines for program execution or to include them in the designed system. The distribution of parts between the machines must be done in ways similar to the connections between the units of the device, and supply parts with a frequency proportional to the frequency of the pulses circulating in these connections.

Using the proposed device

it is possible to solve more complex problems of loading equipment. For example, you can enter certain initial reserves, set predefined block counters to a number. Thus, the device allows you to find the optimal fleet of machines and other equipment.

Electromechanical counters are recommended as counters. (It is possible to use electronic meters with indication. As adjustable pulse generators - blocking generators and multivibrators.

Subject invention

A device for simulating equipment loading tasks, containing blocks for simulating the arrival of source and finished products and blocks for modeling equipment productivity, interconnected according to the topology of the graph under study, characterized in that, in order to improve the speed of the device,

each unit for simulating the arrival of the initial product is made in the form of a serially connected first adjustable pulse generator and a first pulse counter; each unit for simulating the downstreaming of finished products is made in the form of a second pulse counter, and the unit for modeling equipment productivity is made in the form of a second adjustable pulse generator, a reversible pulse counter and an adder, with the output of the second adjustable pulse generator connected to one and the output of the adder to another the inputs of the reversible pulse counter, the output of each first adjustable generator is connected to the corresponding input of the adder of the corresponding block for the model equipment productivity, the output of each of which is connected to the input of the corresponding second pulse counter.

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