SU1156003A1 - Time master device - Google Patents

Abstract

TEMPORARY TASK DEVICE, containing a pulse generator, connected by an output to the counting input of a first reversible pulse counter, connected by discharge outputs to the inputs of a decoder, connected by outputs to the inputs of the program set, characterized in that, in order to increase reliability and expand the field of application of the device, it has a second reversible pulse counter, a digital-to-analog converter, the first OR element, a scale amplifier, and a control unit containing the first, second, and third triggers, second, third, fourth, fifth, sixth OR elements and the seventh GSH element connected by the first input to the fault inputs of the first and second reversible counters and to the bus St - “Vfi. ::, 4--“ Reset, the second input - to the bus Prohibit and output to the first inputs of the fifth and third elements OR and to the zero of the first trigger connected by the direct output to the control input of the pulse generator, and the single input to the output of the sixth element OR connected by the first input to the unit the input of the second trigger and the output of the fourth element I.Sh1 connected with the first input with the bus Addition, and the second input with the bus Resolution and with the second input of the third element OR connected by the output to the zero input of the third trigger, with the first input of the second element OR connected to the next input of the fifth element. OR and bus Reverse, the second input is with the bus with: Subtraction, and the output is with the second input of the sixth element OR and the single input of the third trigger connected to the direct output to the subtractor. the input of the first reversing counter ate and to the subtractive input of the second reverOS of the coded; counter, connected summing input with the direct output of the second trigger n with the summing input of the first peaepcHBHorjo counter, counted input with the output of the first OR element, and the output output of the first peaepcHBHorjo counter; the inputs of a digital-to-analog converter connected by an output to the input of a large-scale amplifier, the inputs of the first element OR are connected to the outputs of the program set block.

Description

MUjf peTcM-jHt oTHiH tsi t automatized cargo systems () dwelin1 1x t-processons, where aiaiog electronic jHMvjiRTOpb are used; with ynp "BJHHiiPM from rt 4.i; uiKifn, ero V11tde to rot, F partoggles of akto-gptiznronyyny sshsgemakh upranleiya teploznetitetksksm bleszhlMI; for example, when starting psits. It is well known that it is equipped with a pulse generator containing a pulse shaper, 1CED1- e. HHhUi CROCK TO NYX5g ug; equal to the dividers of the frequency block, the TajiaiiHH level block, and 1 block 11 block. Device in C) kiln in years in (gm, 1; flexibility / change nporpaMMiii bone by changing the coordinates of the program sections of the technological hp curve (process, which is speed-time 1) However, this device T1) ebits additional devices for storing relocation coordinates or their Bivalents (block for setting the speed and block for adani level), the complexity of which increases with increasing) the number of approximation area and the number of realizables) x curves. The closest technical peni (according to the invention; is; a time setting device for issuing a mouth; 1 analogue controllers containing a control unit; a hall; ayupi1; 1 teners torus pulses.) Connected to the counters input of the reverse counter of the time counter and outputs; the decoder is associated with the n inputs of the node of time points, the outputs of which are connected to the inputs of the conversion unit, in part 1L1 of the current key block. This sets the speed of the device to The redundancy account of switching functions in the digital part of the device, which ensures the implementation of C time dependencies without a backup device, and in real, slowed down and accelerated time scales 2}, H (the wealth of a known timelamping device is the presence of an conversion block, which is B. This is due to the fact that the reforming block contains m TOKOBIIIX keys, which are successively Wk, 1, the switch of the node of the partial sight points, 1Ps I tslsa, the coordinates of which I am summed up with, carried out I ask 1 (to deliver the analogue controller to the controller. In this way, we eat more, and we need key keys and precise resisors, that we, d (T c us; false constructs and organizers, reduce reliability and increase power consumption. In addition, this solution is difficult for micropr (1DeSSORN {.) М 1С ОЛНеН П). The current user of the X keys in the transducer block (is O1 ravanpym at tri ± -2 1s due to technical DIFFICULT. The number of splits of the FUNCTIONS by the level of P1 was 60. With a temporally setpoint set 11 5Ys: two numbers: d) by the level of 200-250. The purpose of the invention is the reliability of the 1st of 1 and the expansion of the area of the device. This goal is achieved by the fact that in time mode a setting device containing an impuser generator, a subroutine output to the counting first reversible pulse counter connected by the discharge outputs to the inputs of the deflector connected by the outputs to the inputs of the program set block, entered 2b reversible counter, digital-to-analog converter, first element OR, scale, w amplifier and control unit containing the first, BTopofi and third triggers, second, third, fourth, fifth, and the sixth element OR and seventh element AND And connected by the first input to the fault inputs of the first and second reversing of the 1st counters and to the bus Reset, the second input to the bus, and the output to the first inputs of the fifth and third OR elements and to the zero input of the first trigger connected directly The output from the control input of the pulse generator and the single input to the sixth OR input, connected by the first input to the single input of the second trigger and the output of the fourth OR element connected to the first input, and W (with the third input - bus) with the second entrance of the third element and OR is a scaled output to the zero input of the third trigger, with the first input of the second element OR connected to the second input of the fifth element OR and the bus Reverse, the second input to the bus you read, and the output to the second input of the sixth element OR and one the third input of the third trigger connected to pr. No. 1m output to the readout input of the first reversible counter and to the readout input of the second reversible counter connected by the summing input to the forward output of the BTop trigger and to the summing input of the first reversing counter; s input - with the output of the first OR gate, and outputs bit dnymi - with WMOs rows analog converter connected to the output of scaling amplifier input, wherein the inputs of the first OR gate coupled to the outputs of a set program block. Figure 1 is a block diagram of the proposed device; FIG. 2 is a graph of temporal function quantization, explaining the principle of operation of the device; FIG. FIG. 3 is a functional block diagram of the control unit. The device (FIG. 1) contains a pulse generator 1, a first reversible counter 2, a decoder 3, a program set block 4, a control block 5. converting unit 6, including the first element OR 7, the second reversible counter 8, the digital-analog converter 9, the scale amplifier 10. The control unit contains the first, second and third triggers 11, 12 and 13 of the seventh, sixth, fifth, fourth, third, second element OR 14-19. The pulse generator contains the generator of the reference frequency 20, the frequency divider 21, the group of elements And 22; .switch 23, eighth element OR 24, resistor 25. In Figure 1, the following symbols are introduced: 0 - manual control from the operator; ACP is an automatic control system. Resolution is a signal of permissions. The change of the driver is upward; F-faith is a signal that requires a change in the delaying influence in the direction of decreasing J A ban is a signal that blocks the change in the setting effect, i.e. requiring its stabilization in time. Pulse generator 1 provides a set of frequencies Фр1СлФ where Фр is the main operating frequency; DF - frequency increment; C - coefficient. The possibility and nature of the change in the course of the technological process over time is determined by technological limitations. For example, when starting and stopping energy blocks, the rate of change of the task is not. should exceed 4-4,5 (deg / s). Therefore, the values of DF and C are chosen based on technological requirements. - I-1-- - - --J with - - in particular, where 0, 1,2. This leads to a simplification of the frequency divider 21, which can be implemented on the basis of a conventional binary counter, for example K155IE5, in the integral design. The start of the pulse generator 1 is carried out from the 5-control unit with the arrival of a signal at the control i input of the reference frequency generator 20. At the same time, the pulses arriving from the divider 21 to the first inputs of the And 22 elements pass through that And element, to which through the switch 23 the potential (+ E) from the power source, for example Fr, is applied, as shown in Fig.4. A reversible counter 2 (current time intervals) is used to count all pulses arriving at its counting input with a period — i.e. for podde de T „account current time intervals. The initial setting or Reset - to the zero state is performed by the operator Ots. The reversible counter 2 has 1i bits: 1, ..., j, ..., c. Its bit depends on the number of time divisions n and is defined as i. Its single outputs are connected to the corresponding inputs of the decoder 3. The decoder 3, having II outputs, is used to decipher the state of the reversible counter 2 of the current time intervals. At each moment of time, one of the ft nsnn is excited and: at its output there is, for example, a positive potential, which arrives at the switch inputs of 4 dolphins. The block of program set 4 (node time intervals) is intended; chl connections m node intervals and n current time intervals to the corresponding inputs of the OR element 7. The control unit 5 is used to form the device operation control signals (1Power from external circuits, which are Operator control circuits Op and the logic circuit, in particular, of the power unit. The manual control signals and signals from the power unit logic circuit are similar. The operation of the control unit 5 is carried out in accordance with the truth table. reversible counters 2 and produced only by the operator. Resetting the Inhibit About the H × Resolution- Reversal A large-scale amplifier 10 connected to the output of the digital-analogue driver 9, and the output to the input of the automatic control system (ACP), is designed to match the output signal Converter with ACP signals 9. Thus, in modern control equipment, for example, GSP Cascade, unified current signals of 0-5 mA are used. Thus, the scale amplifier 1 (in this case, the current one) should have such a gain factor so that the maximum current output does not exceed 5 mA at the maximum code of the nodal time intervals. those. at the maximum setting of the ACP input. When implementing a scale amplifier 10, it can be used (5 van, for example, a differential amplifier in integrated design, for example, K140UD6. The proposed temporal master device is based on the piecewise-step approximation method 1 and time function j-Ut) with uniform division by function (Fig. 2), i.e. H til where l (the increment of the function f is the number of partitions according to the function, which is chosen from the condition of obtaining the required accuracy. At that, each value of the function i) --- Y corresponds to the time instant it, ... ... t n, t. e. this increments the argument:. ,, At., .... i which are not equal in general to each other. The points on the graph (Fig. 2) with coordinates i, -, Lj, where 0,1,2, ..., are called nodal time intervals (they are located at the intersection of the flop lines). However, the algorithm for finding these knot points during such a partitioning schedule (t remains unknown. In order to obtain an algorithm for finding node points, an additional partitioning of the increments of the argument Aiiv.dtj is performed. Outgoing from the smallest possible increment d1 "; which must be reproduced using a time reference device. The value of Ai can be calculated using the formula tnin (c) where Uppmx is the maximum rate of change of functions from a possible set. Equation (2) allows you to select the period T of the partition of the function by argument. Then the main operating frequency of the master oscillator and pulses is defined as. P T Splitting the graph y -Ut) by argument with an increment of T by formula (3) generally leads to n uniform partitions by argument, moreover, m. This means that the proposed device has the redundancy of switching functions in the digital part, which allows you to connect the corresponding increments of functions at any time, a multiple of the quantization step T. Consequently, by dividing any graph from a given set of functions into tons of equal parts, time intervals are obtained, and by dividing the time axis into n equal parts with period T, n current time intervals are obtained, with i current points with a sufficient degree of accuracy when the inequality is fulfilled (3 ) always coincide with the nodal points (figure 2). In practice, the temporary function y – i (.i) is superimposed on a template that has coordinate axes with a grid of m horizontal and m vertical lines at a certain scale. In this case, the numbers of the nodal time intervals are recorded in the table. According to this table, for example, jumpers between the pair of pins on the switch are installed (Fig. 2) Before starting, the operator checks (or establishes) the communication in block 4 according to the table corresponding to the temporary function of the required task. Then turns on the device, gives commands of the initial setting (Reset) to control unit 5, then to reset busses of reversible counters 2 and 8. Zero states of reversible counters 2, and 8 correspond to zero initial conditions, i.e. LJJ, O, as shown in Fig. 2. sets that the same frequency of operation of the oscillator 1 of the driving pulses on the basis of technological requirements, for example, Fr as shown in Fig. 1. Starting up the device is either manually performed by the operator in the test mode by applying the Addition command, or in the operating mode when the Resolution command is received from the logic circuit The pulses from the pulse generator 1 are fed to the reversible counter of the current time intervals 2. Its state is decoded by the decoder 3, and at each current time, short-g. now, in this case) one of the tires is excited (for example, a transition from zero to a positive potential). If the decoder bus 3 corresponds to a nodal time interval, then the potential is transmitted through the block of 4 nodal time intervals and enters the transforming unit 6, and namely through the OR element 7, to the counting input of the reversing counter 8, which changes its state, which leads to a change (increase) in the analog signal at the output of the digital-to-analog converter 9, which is transmitted through the large-scale amplifier 10 to the input of the ACP. If the Inhibit signal is received from the logic circuit of the power unit, the control unit 5 generates a command that prohibits the generation from the generator 1 of the driving pulses. In this case, the task is stabilized in time at the output of the device. When a signal arrives, the resolution of the task starts to grow again. Short-term reductions are possible due to technological limitations. This occurs when the Reverse signal is received from the logic circuit of the power unit, which, through control unit 5, switches the reversible counters 2 and 8 to the subtraction mode, allowing pulses to be generated from generator 1. After the Reverse command, the Restriction command is possible to stabilize or Enable to increase the reference. When the controlled parameter leaves, for example, a hot steam or pressure temperature, a blocking signal is applied to the setpoint from the logic of the power unit, after which the operator can disconnect the temporary task from the ACP circuit input (by connecting, for example, the setting knob, the output signal of which corresponds to the maximum output device signal). The device can be used to implement both increasing and destroying temporal dependencies.

R) In this case, the operator prepares the device for operation. establishes -pkpko one line between a pair of pins to tmyt.topa hail points. He then kg; yuchaet ycTpoiioTHo, Gives the command; The initial installation (Reset) in the control unit 5, then to the reset buses of the reversible counters 2 and 8, sets the frequency of the generator 1 of the driving pulses. After this, the reversive C et 1-: ki 2 8 are switched to subtraction mode. In this case, the generator 1 of the driving pulses 1 begins to work. After a certain time interval, sufficient for loosening at least one or several pulses from the pulse generator 1 to the countable Bypass of the reversing counter; - 1 2 current time scales: lost: g. . The operator gives the command Reset ;; control unit 5 and bus reset, reversible

General;

is terminated.

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the reversible counter 2 is in the zero state .., and the reversal counter is 8 nodal ;; p rsnpyl intervals - in a single condition (as it is countable - the entrance to the subtraction city could pass only one pulse from the decoder 3 through bhgk 4 and the element OR 7 due to the fact that only one language was installed in the node A of node points, i.e., it contains the reverse code of the current state zero). The unit status of the reversible counter, 8 point nodes, corresponds to the maximum output value of the temporal setting device.

After that, the operator establishes the necessary connections in bpocr. 4 nodal times (x intervals. According to the table corresponding to the time functions of the descending task.

It should be noted, that when implementing a decreasing function, f) -) is always absent, since it corresponds to a zero time count.

The device is put into operation either by the operator in the subtitle command feed test mode, or in the operating mode with the arrival of the Reverse command from the power unit logic circuit 1 1 (this happens when the power unit stops, unlike its start, where an increasing time function is required) for the period of pulsing pulses T, the device begins the implementation of a decreasing assignment, while the delay is due to the fact that during the first.; p7.pee from the output of the generator 1 imp.; g; - gov reversible counting. 2 current time intervals transition into a single state and then starts to count the time intervaga to zero.

The device can be used not only under zero initial 1x conditions, as shown in FIG. 2 ,, where

.: and c J- O, then the number of yariOi ix points is determined :-( corresponding to

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2Q to .. The day was recorded in the p eiBepCHBtsbm counter for 8 node time intervals. This is equivalent to the transfer of the time axis by the value of c.

and compiled 1e of the specified tables of the new time points for block 4 is carried out by T-r.iK x (; as well as Hp: i zero leading levels (see fig, 2).

Removing the initial conditions in re; -:; . from 1; 8 1 1 account counts 8 nodal points ensure the device is prepared for operation in the following manner. In block; nodal points of the installation. pkzaetsa podrl, 1, f ;, links, starting with the first (:, ej with. the seal of the pair of pggyrk), including.:. astg; .1 istruyshstvo, produced source; g - Oros, g generator 1 nodal points per.ocl: it drops to the maximum frequency of operation: (in the dюмyum cjr / dah and acceleration g; prepare the device for operation) and node; -c; t Addition command, As a result, in a reversible counter, there are 8 spacing points through time ffio T fix the code, corresponding to I1,. Posj; (; this ID operator gives the command

The reset to the control unit 5 and to the cOijoca bus of the reversible counter 2 of the current MpeMefiHbix I {Tervalov, establishes, for example, the operating frequency Фр and communication in switch 4 according to

Ta6j4Viu, e, corresponds to the boomie of the temporary fukkady of the required task as under zero initial conditions, after which the device is ready for operation and starts up in the same way as indicated

Гlepi5o fy occasion ..

The device can also be used to implement a decreasing time task, smaller than the maximum chadapi. In this case, the device is being prepared for slave (5th is performed by log1-pc1.) In an internal review of the situation with the pa-jiufueii that CTtaia.ia is switched on ns op, pa l-Sh1na, and nth moi is defined as the difference between the maximum possible value of function 1 for a given device and the maximum value of a given function j, t (referred to), i.e. MtTiav Chglcn Then, the same operations are performed as in the second case. However, in the block of 4 nodal points with the establishment of links according to the table, there are no links, starting with p-and. Since in this case the delay in work is (T7о + 7) T and if this is unacceptable, then the exit to the working schedule can be included in preparatory operations. Thus, in a device with a large splitting in function, as is the case for energy objects, for example, t 250, the number of component resistors to reduce the realization of the conversion unit is about i IB times, where, and the number of precision resistors where the coefficient 3 takes into account the resistor grid in the diffraction analogue converter, which consists of only two nominal values, in contrast to the m needed for the realization of current switches in the known device. At the same time, the device is simplified, reliability is increased and technological capabilities are expanded.

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Claims (1)

A TEMPORARY DRIVER, containing a pulse generator, connected by an output to the counting input of the first reversible pulse counter, connected by discharge outputs to the inputs of a decoder, connected by outputs to the inputs of a program set block, characterized in that, in order to increase reliability and expand the scope of application of the device, a second reversible pulse generator, a digital-to-analog converter, a first OR element, a large-scale amplifier, and a control unit containing the first, second, and third triggers are introduced s, second, third, fourth, fifth, sixth and seventh element or an OR gate, a first input connected to the reset input of the first and second counters and reversing the bus