SU1303995A1 - Device for programmed control of analog xy-recorder - Google Patents

Abstract

The invention relates to automation and computing and can be applied when building software systems to control devices powered by an AC drive. The invention makes it possible to reduce the occupancy of the computer processor while simultaneously maintaining speed by providing the device with a continuous tracking mode for the process of working out the movement of the recorder pen specified by the programming unit. With small movements of the pen of the recorder along the X and Y coordinates, the device performs a temporary pause with a single-vibrator 12 and 13 duration. With large displacements, feedback from the AC amplifiers of the analog two-coordinate recorder that forms in the drivers 9 begins to form unavailable. and 10 clock pulses. The single vibrator 14 forms the time delay necessary for lifting and lowering the pen. 1 hp f-ly. 7 il. S (L e O5 O CO SO G SL fa. /

Description

11303995

The invention relates to automation and computer technology and can be applied in building software control systems for devices driven by an alternating current drive.

The purpose of the invention is to reduce the occupancy of the processor of the programming block while maintaining speed.

Computer 1 contains a program containing the coordinates of the points of the graph and the control algorithm, an analogue of the two-axis recorder 2, when constructing this graph. According to the readiness signal, the incoming from element VZ 16 to computer interface 1, the latter gives the X and Y coordinate values of the graph point and control signals, which are the control signal AND, (Figs. 6 and 7)

Fig. 1 shows a structured circuit; they are input to the inputs of the decoder 3 of the command of the device for program control of the analogue two-coordinate plane; figure 2 is a functional diagram of the computer; Fig, Pro, b - algorithm

the output of the decoder records the digital data received from the computer 1 in the registers 4 and 5 of the displacement value of the pen bots 3BMj HB of FIG. 4, the analogue circuit of the X and Y coordinates, respectively,

a two-coordinate recorder; 5 shows a control unit; Fig. 6 shows the time diagrams of the operation of the device with large movements of the pen of the analog two-coordinate recorder; 7 is the same with small movements of the pen of the analog two-coordinate recorder,

The device contains a computer 1, analog 25

arrives at. the third input element ZI-NOT 11, the output of which is connected to the input of the one-shot 12 with a restart, which serves to work out the pause required for a small movement of the pen, A transition of the control signal and J from one to zero starts the one-shot 12, forming an inverse signal at its output U which

the left two-coordinate recorder 2, the decoder of 3 commands, registers 4 and 5 of the magnitude of displacement, respectively, in X and Y coordinates, digital-to-analog converters 6 and 7, respectively

on X and Y coordinates, the node 8 of the control-element serves for temporal filling, the first 9 and, the second 10 forming the j-signal of the readiness signal, the pulse pulses, the element ZI-NE 11, the first to calm the mechanical system - the first single-vibrator 12c is restarted, the second one-shot 13, the third one-shot 14, the delay element 15, the GI element 16,

Programming unit 1 contains a central processor 17, a generator 18, a system controller 19, a controller of 20 alarms, an interval time-zero pulse. Entry appearance

element ZI 16 inverse pulses u, 3 and forms the output element interface 26, interfaces 27 and ZI 16 an inverse pulse of length and 28 successive exchanges, with finiteness equal to the sum of a long-term driver 29 and those pulses of one-shot 12 and 13,

Analog two-coordinate self-occurrence The appearance at the output of element 16 of Logic 2 contains dividers 30 and 31 of the indirect zero U., indicating that the device is not ready. With large displacements (the mechanized ones are input to the input of the one-shot 13 and to the first input of the ZI element 16 through the delay element 15,

Single Vibrator 13 (with regulating

recorder topics and for restoring the one-shot 12, Element GI 16 gives 35 delay of the back edge of the pulse U, (dd / AO ms), formed by the single-vibrator 12, necessary for the operation of the one-shot 13 and appearance at the second input; element ZI 16 inmer 21, memories 22 and 23, transceivers 24 and 25, parallels, RC filters 32 and 33, rheohords 34 and 35, sources 36 and 37 of stabilized power, amplifiers 38 and 39, -50 of the recorder over time t 20 ms) in transformers 40 and 41, reversible rigid feedback circuits of amplifiers of alternating current of the recorder, coordinator motors 42 and 43, electromagnet 44 and diode 45,

Control node 8 contains RS-trignat X and Y, respectively, there are variable voltages U, When

tension X and Y, respectively, there are variable voltages U, When

a ger 46, a transistor 47 and a resistor 48 55 entering them into the formers 9 and the computer 1 is used as a program; 10 pulses are converted into a synchronic block "chroning pulses U q and U ,, c

The device operates as follows: f 50 Hz, t, e; a variable, for example, feedback feedback acts as computer 1; a program is recorded containing the coordinates of points of the graph and the control algorithm, an analogue of two-axis recorder 2, when plotting this graph. According to the readiness signal coming from the output of the ZI element 16 to the computer interface 1, the latter outputs the coordinate value X and Y of the graph point and control signals, which are fed to the inputs of the decoder 3 commands

The control signal And, (Fig, 6 and 7)

blunt on the inputs of the decoder 3 commands

the output of the decoder writes digital data received from the computer 1 in registers 4 and 5 of the magnitude of the movement of the pen of the coordinates X and Y, respectively,

0

five

arrives at. the third input element ZI-NOT 11, the output of which is connected to the input of the one-shot 12 with a restart, which serves to work out the pause required for a small movement of the pen, A transition of the control signal and J from one to zero starts the one-shot 12, forming an inverse signal at its output U which

enters the input of the one-shot 13 and the first input of the element ZI 16 through the element 15 of the delay,

Single Vibrator 13 (with regulating

- element) is used to temporarily delay the ready signal, it is not necessary to calm the mechanical system

0 versa pulse. Appearance

recorder topics and for restoring the one-shot 12, Element GI 16 gives 35 delay of the back edge of the pulse U, (dd / AO ms), formed by the single-vibrator 12, necessary for the operation of the one-shot 13 and appearance at the second input; of the element ZI 16 inn X and Y, respectively, there appear variable voltages U, When

when they are received by shapers 9 and 10 pulses, they are converted into blue

Twa clock synchronization generator. The pulses arrive at the first and second inputs of the ZI-NO 11 element, the output of which is connected to the single-vibrator 12 with a restart, and carry out its subsequent starts. At its output an inverse signal is formed, the leading edge of which depends on the sound-triggering control signal U, which came from the decoder, and the falling edge is from the last incoming signal of the synchronizing pulses Ug and, Duration

7 to

pulses at the output of the one-shot 12 is equal to

and. -f- + t,

where t is the pulse duration in

restart mode; t is the pulse duration in the startup mode (t 25 ms);

t j t + t2 + t + t - the sum of time

between the first and last launches.

Consequently, at small displacements of an analog two-coordinate recorder along the X and Y coordinates, the device performs a temporary pause with elements 12 and 13 (about 40 ms), and at large displacements, feedback from the analog two-coordinate amplifiers begins to take part in the formation of the unavailability signal. recorder.

The readiness signal generated by the element ZI 16 after moving the pen to the specified point, computer 1

the next value is issued

nat X and Y points of the graph.

A single vibrator 14 (with a regulating element) forms a time delay and, necessary for the ascent (descent). The one-shot 14 is triggered by the control signal Ug coming from the control unit 8.

The operation of the analog two-coordinate recorder 2 is based on the compensation method.

DC voltage is applied to the input dividers 30 and 31 of the voltage. The voltage is then filtered by R (f-shits 32 and 33, compared to the compensating voltage, taken from the reichords 34 and 35, which are connected to the sources 36 and 37 of the stabilized power supply.

with O

five

0

with

0

0

e

0

and the compensating voltages eI are fed to the inputs of the amplifiers 38 and 39, where they are converted into voltages with a frequency of 50 Hz (using a vibration converter) and amplified, after which they are fed through separation transformers 40 and 41 to the control windings of the reversible motors 42 and 43. The engines move the reichord engines until the supplied voltages are compensated for by voltages from the reichords. A writing device (pen), controlled by an electromagnet 44, is connected with the sliders of reichords, which draws on paper the dependence of two quantities in the rectangular coordinate system.

The third windings of transformers 40 and 41 are introduced into hard negative feedback voltage amplifiers 38 and 39, which increase the stability of the gain factors and reduce the output impedance of the amplifiers.

When motors 42 and 43 are controlled, a sinusoidal alternating voltage is induced in the feedback circuit, which is lost after processing by engines 42 and 43 of moving the sliders 34 and 35. T, e., When the pen moves, these windings a signal is removed reporting this movement.

Control node 8 is an RS flip-flop with a powerful transistor (Fig. 4).

The signal of the control unit 8 controls the electromagnet 44 retracting the pen, the RS flip-flop memorizes the state of the pen (raised-down) using control signals from the decoder of the 3 commands.

Lift signal - lower the pen is fed from the computer 1 according to the program. For example, the execution of the schedule is possible in continuous mode (the pen is lowered), in the point mode (the pen is raised - lowered - raised). It is also possible to design graphs and drawings (writing numbers, letters, coordinate axes).

The operation of the device during small movements differs from the operation of the device during large movements in that a sinusoidal feedback signal is not generated by the recorder (due to the rapid movement processing), as a result of which no synchronization occurs in the formers 9 and 10

impulses and the one-shot 12 does not restart with repeated start

The time diagram of the operation of the device for large movements of the pen is shown in FIG. 5.

The operation of the device at small displacements is presented in FIG.

The signal and 3 from the decoder 3 is fed to the first input of the element ZI-NOT 11,

13039956

A driver whose output is connected to the corresponding control input of an analog two-coordinate recorder, in which the pen control input is connected to the control output of the control unit, to the inputs of which are connected the first and second outputs of the command decoder connected to the inputs of the address bus and the system bus

The transition from 1 to O of the signal of the descramble-fO control of the computer, to the data bus of the kotor is inverted in element 11 (into the transition from O to 1) and is the trigger for the one-shot.

The signals of the sync serials from the formers 9 and 10 are fed to the second and third inputs of the ZI – NE element 11, the output of which is connected to the single-oscillator 12 with a restart. The transition from 1 to O of the last pulse of the sync series restarts the one-shot 12 last time,

The series of pulses is synchronizing, since it synchronizes the operation of the analog two-coordinate recorder with the software control device, since at this time it is go. The value for receiving the next displacement amount is removed,

As a one-shot 12 with a restart, you can use a K155AGZ type microcircuit. The use of a device for programmed control of an analog two-coordinate recorder with asynchronous drive engines provides the transmission of information from a computer and graphically with maximum speed. depending on the magnitude of the movement. In addition, by reducing the time taken for the computer by continuous monitoring by the device of the process of working out the movement of the pen in the X and Y coordinates, and the readiness coming from the device gives

Significant value about pen relocation,

Claims (1)

Invention Formula 1, A device for programmed control of an analog two-coordinate recorder containing a computer, a decoder for command, a control node and, in each X and Y coordinate, serially connected displacement value register and digital-to-analog conversion 50 0 the swarm is connected by information inputs registers of the magnitude of movement along the X and Y coordinates, the control inputs of which are connected to the third output 5 command decoder, characterized in that, in order to reduce the occupation of the computer processor while maintaining speed, two pulse shapers, a ZI-NE element, a first one-shot restart, a second one-shot, a delay element, a variable resistor, a GI element connected by an output are introduced with the interface of the computer, the inputs of the first and 5 of the second pulse formers are connected respectively to the output of the feedback X and Y coordinates, analog two-coordinate recorders, the outputs of the pulse shaper are connected to the first and second inputs of the ZI-NE element, the third input of which is the sub-switch. to the third output of the command decoder, the output of the NE element is connected to the first input of the second single vibrator through the first one-shot one-shot with the second restart and the second input to the output of the second one-shot through the delay element. the output of the first variable resistor connected by the second output to the common bus device, 2, The device according to claim, 1, characterized in that in order to form a time delay for raising and lowering the pen of the analog two-coordinate recorder, a third one-shot is inserted into the device, the first 0 whose input is connected to the zero output of the control unit, the second input of the third one-oscillator is connected to the first output of the variable resistor, the second output of which is connected to the common bus of the device, and the output of the third one-oscillator is connected to the third input of the ZI element, five SHOCK /, Tire iowiur Sptemna UIUHO  checkout V3MfpfHUU FIG. 2 Nacha / ioj {Initialization of the Congüento Nikra ZVN  Measurement Disconnect ftacffi / interrupt | th "device / py UoAj / ivto t OffpaSomKa come interrupt  Check on HeoffjroffufKxmt LiL} Lg graphic inforg Gvil graphic i / Hipopfta- 4iftf naamameyovy somot / set US / Juno8gt ftacKU mfptfSff no eSoiOfetfSo t devices (Dui3fii FIG. five Editor M.Petrova Compiled by A. Ispravnikova Tehred I.Popovich Proofreader S.Shekmar Order 1310/48 Circulation 864 Subscription VNINPI USSR State Committee on cases of inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4