SU1399757A2 - Device for modeling request serviicing process - Google Patents

Abstract

The invention relates to specialized computer hardware and can be used to model queuing systems. The purpose of the invention is to expand the functionality by simulating a limitation on the service duration of a charge. The goal is achieved by introducing an AND element, a first pulse exclusion unit and two termination signal generators, each of which includes a trigger, a delay element, and an AND element, and the first pulse elimination unit consists of successively connected delay element, AND element, and . ra. The device allows determining the probabilistic characteristics of the process of servicing the application according to the number of responses of individual elements of the device. 3 il. (L

Description

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The invention relates to specialized computer hardware and can be used to model queuing systems.

The aim of the invention is to extend the functionality by simulating a limitation on the length of service for a quotation.

Figure 1 shows the scheme of the proposed device; Fig. 2 is a block diagram of the exclusion of the first pulse; in fig. 3 is a diagram of the driver for end-of-service signals.

A: The device (Fig.) Contains a generator of 1 random pulses, the first

; 2 and second 3 signal conditioners

ending the service for the wok per; out 4 and second 5 pulse generators of random duration, block 6 eliminating the first pulse trigger 7, third element OR 8, first 9 and second 10 elements OR, first 11 and second 2 prohibition elements, and AND element 13.

Block 6 exclusion of the first pulse (Fig. 2) contains a trigger 14, the element And 15 and the element 16 of the delay.

Shaper 2 and 3 signal termination signals for wok (figvZ)

 contain trigger 17, element 18 and

I element 19 delay.

 The device works as follows;

I In the initial state, trigger 7 is set to state j in which

I at its inverse output has a unitary signal and zero at the direct output. At the same time, by means of the control input, the prohibition element 1 is opened and the prohibition element 12 is closed. The trigger 17 of the driver 2 is set to a state in which there is a single signal at its inverse output. The first short pulse from the generator

I arrives through an open item

I1 prohibits the start of generator A and triggers trigger 7, which is set to the state in which prohibition element P is closed, element 12 is blocked, and the signal is removed from the setup input. The trigger 17 of the driver 2, and the trigger 17 of the driver 3 is set to a state in which a single signal appears at its inverse output. At the same time, the first impulse is

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five

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five

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element I 13 does not pass, since the trigger 14 is established in the single state after a certain time determined by the delay element 16 and longer than the generator 1 pulse. Since the duration of the transients in the circuit; the delay element 11, the trigger 7 is longer than the flip-over time of the flip-flop 17, and the pulse duration of the generator 1 is approximately equal to the flip-flop time of the flip-flop 17, after the first pulse of the oscillator 1 ends, the trigger 17 of the driver 2 remains. in the previous state, and the trigger 17 of the driver 3 is set to the state in which a single signal appears at its inverse output.

The next impulse from generator 1 starts generator 5, resets trigger 17 of driver 2 and overturns trigger 7. At that, trigger 17 of generator 2 is set to the state where a single signal appears at its output, and trigger 17 of generator 3 remains in this state nii similar to the trigger. 7 driver 2 when the first pulse arrives from generator 1.

The magnitude of the pulse delay in the delay element 19 is chosen equal to the maximum service duration of the application in the system and. is t + 1.5 (5 where t, and

. ,

o is, respectively, the mathematical prediction and the standard deviation of random intervals between the pulses of the generator 1.

If generator 4 has finished working before this interval has expired, the signal from the driver 2 output does not affect the operation of the device. If the signal at the output of the imaging unit 2 for wils after the specified delay time has elapsed and after the second pulse arrives from generator 1, but before the generator 4 ends, the signal is stopped and the signal is removed from the corresponding input of the OR 9 element.

If the signal at the output of the delay element 19 is wils in g oment, when the second pulse from generator 1 has not arrived, it does not pass through the element 18, i.e. the latter is closed by a zero signal from trigger 17. It is not necessary to limit the duration of servicing the first application in this case, since the second application will start generator 5.

Similarly, the shaper 3 operates for even-numbered voltages (pulses) coming from the generator 1.

The signal at the output of the element OR 8 reflects the periods when the device is occupied by servicing the charge.

The faithful characteristics of the process of servicing the application are determined by known methods by the number of operations of the individual elements of the device.

Claims (1)

Invention Formula A device for simulating the process of servicing a stockpile according to the auth. No. 1037265, it is distinct from the fact that, in order to expand the function of which the income of which is connected to a different input of the element I of the first pulse exclusion unit, each shaper of service termination pulses consists of a trigger, a delay element and an element And, the first and second inputs of which are connected respectively to the output delay element 10 and inverse trigger output, with the outputs of the elements AND of the first and second signal conditioners of the end of service signal being connected to the stop inputs, respectively, of the first 15 and the second pulse generator of random duration, the output of the random pulse generator is connected with and i the first input element AND device, the input of the delay element, counting 20 input of the first shaper of the end of service signals and the input of the delay element of the first pulse exclusion unit, the direct output of which is connected to the second capabilities due to the model 25 input element AND device, the output of limiting the duration of which is connected to the input element delays and the counting input of the trigger of the second signal conditioner of the end of the service of the order, the installation 30 inputs of the triggers of the first and second signal conditioners of the end These servicing requests, it additionally contains the AND element, the first pulse exclusion unit and the two Formating Service End Formation signals, the first pulse exclusion unit consists of the delayed elements connected in series, the AND element and the trigger, the inverse operation of the request is connected with inverse and direct outputs of the device trigger. the stroke of which is connected to another input of the element I of the first pulse exclusion unit, each driver of the service completion pulses consists of a trigger, a delay element and an element AND, the first and second inputs of which are connected respectively to the output of the delay element and inverse trigger output, with the outputs of the AND elements of the first and second signal conditioners of the end of service signal connected to the input. give a stop according to the first and the second pulse generator of random duration, the output of the random pulse generator is connected with and i the first input element AND device, the input of the delay element, the counting the input of the first shaper of the end of service signals and the input of the delay element of the first pulse exclusion unit, the direct output of which is connected to the second services are connected to the inverse and direct outputs of the device trigger, respectively. 1 Fig 2 0ue.J 18