SU1343391A1 - Two-channel step optimizer - Google Patents

Abstract

The invention relates to adaptive systems and is intended to automatically determine and maintain optimal operation of objects with high inertia and transport delays, operating under intense disturbances and having statistical characteristics in the form of a monotonically varying curve or with a weakly pronounced extremum. The purpose of the invention is to expand the functionality and improve the accuracy of maintaining the optimal value of the output parameter of the object com. The two-channel stepper optimizer contains an optimized parameter sensor 1, a block 2 for determining the magnitude and increment sign of the parameter to be optimized, a control pulse shaping unit 3, a first 4 and a second 5 comparison blocks, a control channel switching block 6, a switching block 7 on the main channel, an actuator control unit 8, a command unit 9 and a power supply unit 10. 9 il. with (6 (L with 4 WITH with WITH

Description

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The invention relates to adatin systems and is intended for the automatic determination and maintenance of an optimal mode of operation for OB-1, those with high inertia and transport delay, operating under intense disturbing effects, mainly in a variety of control channels, and having statistical characteristics in the form of mono-TON1GO a changing curve or with a weakly pronounced extremum.

The purpose of the invention is to expand the functional capabilities and improve the accuracy of maintaining the optimal value of the output parameter of the objects.

FIG. 1 shows a block diagram of a two-channel step optic holder in FIG. 2 - circuit diagrams of the sensor of the parameter being optimized, the unit for determining the values and the sign of the increment of the parameter being optimized and the control pulse forming unit; in fig. 3 shows the circuit diagrams of the first and second comparison units, the control channel switching unit, the main unit switching unit and the executive control unit with mechanisms; in fig. 4 - the principle of the electrical circuit of the command block; in fig. 5 is a sequence diagram of the operation of the control unit; 1a, n1, by automatic mechanisms; in fig. 6 and 7, respectively, a cyclogram of the operation of the device and a graph characterizing the process of finding the optimal value of the output parameter of an object in the absence of an extremum in the static characteristic of the object; in fig. 8 and 9, respectively, is a sequence diagram of the operation of the device and a graph characterizing the process of finding the optimal value of the output parameter of an object in the event of an extremum in the static characteristic of the object.

The device contains (Fig. 1) a terminal 1, an optical parameter, a block 2 (determining the magnitude and sign of the increment of the parameter to be optimized, a control pulse generation unit 3, the first 4 and second 5 comparison blocks, a control channel switching block 6, a switch 7 to the main channel , block 8 control actuators, commands12

ny unit 9n power supply unit 10. Sensor 1 and blocks 2 and 3 contain (Fig. 2) resistor 11, potentiometer 12, resistors 13 and 14, relay 15, field-effect transistor 16, capacitor 17, operational amplifier 18, potentiometers 19, diodes 20, resistors 21, operational amplifiers 22, diode 23, resistor 24, capacitor 25, resistor 26, potentiometer 27, resistors 28 and 29, capacitor 30, potentiometer 31. Blocks 4-8 contain (Fig. 3) resistors 32, potentiometers 33, resistors 34, operational amplifiers 35 , capacitors 36 and 37, triggers 38 and 39, resistor 40, triggers 41, capacitor 42, resistor 43, AND-HE elements 44 and 45, relay 46. The command block 9 contains resists 47, potentiometer 48, capacitors 49, one-shot 50, a transistor 51, a capacitor 52, one-shot 53, buttons 54 and resistors 55.

The device works as follows.

At the initial moment of time, when the device is turned on, the output Q of the trigger 41.1 (Fig. 3) and the second output of the second comparison unit 5, respectively, are set to logical 1, which sets the driving direction upwards in the fourth input of the actuator control unit 8. At the same time, logical 1 is set at the output Q of the flip-flop 39.2 (Fig. 3) and, respectively, at the first output of the control channel switching unit 6 and, arriving at the second input of the block 8, sets the search in the main channel in it.

When the device starts up after pressing the button (Fig. 4) of the command block 9, the one-shot 53.2 generates a VT pulse at the second output of this block (Fig. 5 and 6), which, acting on the second input of the control pulse shaping block 3, starts the amplifier 22.2 (Fig 2).

Block 3 generates a control pulse of minimum duration T, the value of which is determined by the static characteristics of the object from the condition of convergence of its optimization process and is set by potentiometer 27 (Fig. 2), since at the initial time the output parameter Y does not change, and

output of block 2 for determining the values. and the increment sign of the output parameter of the object, the voltage is zero.

Since the inclusion of the optimizer automatically sets the direction of the step to the side more and the search for the landing 1a 41.1 is not ipon3iij; iPT, and the direction of movement towards the side

SOH1N TSYA (Fig. 3). 11о1 ОЖИТС.1Т1, НЫ) |

the front of impulse 7, (fig. 5 and 6) starts in block 9 o; 1 newt () p 53.2, i. A output of which is formed by a pulse V. Impulse V, acting with ntorogch; the output of block 9 to the second is absent on two inputs of the three-input-IQ input, l of block 3, it starts up

priority on the main channel, then logical l will simultaneously be the capture element AND-NOT 44.3 of the block (FIG. 3). The control pulse „„ “, having arrived at the first input of block 8, switches on relay 46.1, which contacts the control circuit of the actuator of the first channel with its contacts to the side more, and the input parameter of the first object channel changes from X to X (Fig. 7).

Negative Governor Front

amplifier 22.2 (Fig. 2), forming a pulse T, the duration of which is proportional to 11; io}) al} 1a is the voltage nl out () de amplifier 22.1 of unit 2, i.e. T. --- 15 K /, /.

. CoE,;) 1Liqie) 1t proportion: p1O1; alntsti K determines the static characteristics of the object, based on the convergence of the process, and

20 is set by potentiometer 31 of block 3 (Fig. 2).

pulse t

UTI

by entering first

the input of the command unit 9 starts a one-shot 50.1 (FIG. 4), the output of which produces a pulse V ,, (FIGS. 5 and 6), which includes in block 2 relays 15 memory cells implemented on elements 16-18 (FIG. and the initial value of the voltage U is memorized at the output

sensor 1, proportional to the value of 30 s,

YJ of the output parameter of the object (Fig. 7).

The negative edge of the pulse Vк, starts in block 9 a single vibrator 50.2 (Fig. 4), which forms a time interval T determined by the dynamic characteristics of the object, and is set with a potentiometer 47.1 (Fig 4-6). During this time interval, the output parameter of the object Y changes from Y to Yj and the corresponding output voltage of the output date

during operand: ionic 35.1 (fig. 3) logical 1 will be present, respectively, logical 1 will also be present at input r of flip-flop 38.1 (fig. 3). At negative pulse front at input c of trigger 38.1 of block 4, signal is inverse output Q (Fig. 6) changes from 1 to O as and, respectively, at the installation input R of the flip-flop 41.1 of block 5, and the signal at the inverse output Q of the flip-flop 41.1 changes from 0 to 1, i.e. arbitrarily and greater than the first sensitivity threshold of 5, (FIG. 7), then logical will be present at the output of amplifiers 35.1-35.3 (FIG. 3).

Chika 1 - from and to U2 (Fig, 7). The voltage at the output of block 2 will change by switching the direction of the step in from 0 to and, -,, since it is less than the positive side. Now output

diameter Y; in each cycle will move upward along the static characteristic of the first channel of the object (Fig. 7) and uU, there will be a negative negative edge of the pulse, d 0 (, 6) until it starts in block 9 one-shot 53. 1, more than 8 - the second threshold is sensitive to the output of which the impulse V p of the strobe of the comparators is generated, which is O. After the impulse passes the signal at the output Q of the trigger 38, 2 and at the first output of the tin 5 will also change from l to O, the trigger 41.1 in block 5 will measure its state to the opposite, in this case

telnosti. Amplifier 35.2 (FIG. 3)

Tory, entering from the third output of block 9 to the second inputs of blocks 4 and 7, overwrites the triggers 38, 1, 38.2 and 39.1 (Fig. 3). Since the signal at the inputs D of these triggers did not change, then in the block 6 switch

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amplifier 22.2 (Fig. 2), forming a pulse T, the duration of which is proportional to 11; io}) al} 1a is the voltage nl out () de amplifier 22.1 of unit 2, i.e. T. --- K /, /.

. CoE,;) 1Liqie) 1t proportion: p1O1; alntsti K determines the static characteristics of the object, based on the convergence of the process, and

set by potentiometer 31 of block 3 (fig. 2).

Moving to the side more in each cycle will occur until, in one of the cycles,

 positively, it will not be less than the first threshold of sensitivity S, (in this case in Figs. 6 and 7 LK - and 5,). Then in this at the time of the strobe pulse formation

(Fig. 5 and 6) in block 4 on you

ope operap: ion 35.1 (fig. 3) logical 1 will be present, respectively, logical 1 will also be present at the input r of the trigger 38.1 (fig. 3). output Q (Fig. 6) changes from 1 to O as well as, respectively, at the insertion input R of the trigger 41.1 of block 5, and the signal at the inverse output Q of the trigger 41.1 changes from 0 to 1, i.e. The step direction is switched to the lower side. Now output

diameter Y; in each cycle will move up the static characteristic of the first channel of the object (Fig. 7) and uU, will be negative (, 6) until it becomes more than 8, - the second threshold of

telnosti. Amplifier 35.2 (FIG. 3)

a About 38, 2 meni 41.1 on p

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the side is larger (on its direct output 1, on the inverse - O).

At the same time, at the input Q of the flip-flop 41.2 (Fig. 3) of the control channel switching block 6, the signal will change from 1 to O, and after the control pulse T has been processed, the output parameter YI will return to the region of optimal values on the first channel, the negative edge will change the trigger 41.2 (Fig. 3) of the control channel switching block 6, i.e., the forward output Q of the trigger 41.2 changes the signal from 1 to O. Since the step was larger, the signal at the output of the element IS-NOT 44.2 of block 6 will also change from 1 to O and trigger 39.2 (FIG. 3) will switch the search for the optimal value. and the parameter YJ to the second channel (Q Qkg "1 in Fig. 6).

Consider the operation of the device if the static characteristics of the object have an extremum (Fig, 9

Let, when the device is turned on, the output parameter of the object is on the right side of the static characteristic branch. The first step will be made towards the larger side, the input parameter of the first channel will change from X to Xj, and the output parameter will change during T, from Y to Y. In this case, uU, will be negative and more than S, which will lead to a reversal of the direction of the step to the side less (Fig. 8). In this case, channel switching will not occur, since when moving to the side less in block 6, the first input of the NAND 44.1 element will be logical O, and the signal at its output will not change when the signal at the direct output Q of the trigger 41.2 changes (Fig. 3) control channel switching unit 6. The device now in each cycle will provide less movement, as when going through the extremum, where / dC; / S,, the first comparison unit 4 only confirms the direction of the search to the smaller side (Figs 8 and 9). In the transition Y; on the left branch of the static characteristic (Fig. 9) uU; will become negative and, after uU will become more Oj, the amplifier 35.2 of the second comparison unit 5 will change its state from 1 to O (Fig. 8), which will reverse the search direction.

and in this case, the side is larger (Fig. 8), i.e. the output parameter YJ returns to the optimum value range, after which the control channels are switched.

If in any device operation cycle the increment / fiU, / exceeds the value of the third response threshold S, then the output signal Q ,, (Fig. 3) of the trigger 39.1, the output of the switching unit 7 to the main channel and, accordingly, to the setup input S flip-flop 39.2 of control channel switching block 6 will change from 1 to O, the signal at the direct output of O c, flip-flop 39.2 and at the first output of block 5 will be equal to logical 1, and the search for the optimal value of the output parameter will be performed on the first channel — the main channel.

The use of the proposed device provides, in comparison with the known, the following 1e advantages: the possibility of using an optimizer for objects having static characteristics with both an extremum and an existing type of monotonically changing curve; when disturbances occur, the optimizer proceeds to search for the optimal value by the main channel, and only after reaching it goes to the search by the second channel, which achieves a more accurate maintenance of the optimal value of the output parameter of the object with frequent disturbances in the main channel.

Claims (1)

Invention Formula A two-channel stepper optimizer containing a power supply unit, connected in series with a sensor of an optimized parameter, a unit for determining the magnitude and sign of the input parameter of the optimizer, the second input of which is connected to the output of the command unit, the control pulse generation unit, the second input of which is connected to the second output of the command unit and the control unit actuators, serially connected first and second blocks of comparison, the second inputs of which are connected to the third output of the command block ka, and third inputs respectively to the first and second output determination unit increments the magnitude and sign of the input parameter optimizer and block 7r.U switching control channels, the second input of which is connected to the input of the command block and the output of the control pulse shaping unit, and the first and second outputs, respectively, with the second and third inputs of the control unit of the actuators, the fourth and fifth inputs of which are connected respectively to the second and the third output of the second comparison unit, differing eight so that, in order to expand the functionality and riopi of the accuracy of the optimizer, a switching switch was inserted into the main channel. The first and second inputs of which are connected respectively to the output block: determining the magnitude and sign of the initial parameter of the optimizer and the second inlet, ohm, of the second comparison unit, and the output, with the third input of the control channel switching unit. (Jw./ 431 nn 50 f m 51 S2 502 51 / H9g NN 47.2 5J2 % hch 49.3 NN U7. / .u-lh) yl l / z X3 Xfl 7 X3 Fig 7 X5 XV LZ X / 9 xz .Xt Editor B, Danko Compiled by V. Bashkirov Tehred A. Kravchuk Proofreader L. Pnlipenko Order 4821/48 Circulation 863 Subscription VNIIPI USSR State Committee but in matters of inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4