SU934461A1 - Device for regulating production process parameters - Google Patents

Description

(54) TOOL FOR THE REGULATION OF TECHNOLOGICAL

I

The invention relates to the automatic control of technological processes and is intended for use, for example, in controlling the parameters of temperature and humidity in drying devices.

A device is known for adjusting the technological parameters of the 1f process of drying building materials flj.

The disadvantages of this device are the lack of increased accuracy and reliability in the conditions of significant duration of the controlled process.

Closest to the proposed technical entity is a device for adjusting technological parameters, comprising a parameter sensor connected to a serially connected amplifier and threshold element, a clock generator, a delay circuit, a driver, coincidence circuits, and executive elements 2.

The significant drawbacks of this device are: LOW FAST FAST) PARAMETERS

the action due to the use of a part of the operating cycle time for the device's diagnostics, as well as low control accuracy, as the diagnostic pulses of an external generator (form-card), rather than bridge circuit pulses, have a sensor of the meter connected in the sensor.

The purpose of the invention is to increase the speed and reliability of control regulation.

The goal is achieved in that a device for adjusting technological parameters, containing a parameter sensor connected to a series-connected amplifier and threshold element, a clock frequency generator, a delay circuit, an optimizer, matching circuits and actuators, an additional splitter and a push-pull signal generator ( HDD), the first output of HDD is connected with the first input of the elements OR, the second S3 - with its second input and with the inputs of the “Uiego and the fourth memory elements”, with In this case, the output of the OR circuit is connected with the second input of the first memory element and through the Delay Element with the driver and with the installation input of the counter-divider, the counting input is connected to the output of the threshold element, and the output of the driver is connected to the first inputs of the three elements And the first input fourth element

the memory, the inputs of the two elements And are connected to the second output of the fourth memory element and simultaneously with the first input of the third element And, the first and third inputs of the first and third elements, respectively, are connected to respectively. corresponding outputs of the first memory element, and the second input of the second element I is connected to the inverse of the fourth memory element, while the outputs of the first and second elements of AND are connected respectively to the first and second inputs of the second memory element, the output is connected to the input of the first an actuating element, and the input of the second actuating element is connected to the output of the third memory element, the first input of which is associated with the output of the air supply element I.

FIG. 1 is a structural diagram of the device shown in FIG. 2 - timing diagram of the scheme.

The device contains a sensor 1 parameter, an amplifier 2 and a threshold element: ment 3, a counter divider 4, the first memory element 5, the first 6, 7, and the third 8 elements And the driver 9, the second memory element 10, the first practical element 11, pulse generator 12, generator of 13 push-pull signals (GDTS), counting trigger 14, fourth 15 and fifth 16 elements AND,; element OR 17, third memory element 18, delay element 19, fourth memory element 20 and second actuator 21 .

“The device works as follows.

 HDS 13 enters from the first exit. the impulse of the beginning of the working cycle, and from the second output - the impulse to diagnose the state of the control circuit, ultimately - the third memory element 18.

The diagnostic pulse from the second output of the HDD 13 at the moment of time t sets 1 fourth element

pulses. In the presence of a certain number of pulses at the output of the threshold element 3, the counter-divider 4 with its output impulse sets at time fc) the first memory element 5 into 1 and thus to the input of the second element And 7 of the matching circuit from the output of the first memory element 5 served

resolving potential. At time 3, the potential from the delay circuit 19 triggers the driver 9, the output pulse of which returns the fourth memory element 20 to the initial state.

and occurs through the second element I 7 to the input of the third memory element 18 and sets it to 1. At the output of it, an actuating element 21 is connected, which acts as a means of signaling the correct operation of the device. At this time, the pulse from the output of the first element And 6 confirms the zero state of the second memory element 1O. Actuator 11 is not included. The diagnostic cycle is complete.

At time C, the impulse of the working cycle from the first output of the HDDT 13 through the OR element 17 sets the first memory element 5 to O and arrives at the delay element 19, the output of which is connected to the input of the counter divider 4, and it arrives at a certain pulse train with Pfog element 3 at the time tj sets in 1 input pulse the first memory element 5, the pulse from the first output of which is fed to the input of the first element And 6 and gfy the presence of a potential from the second output of the fourth memory element 20 in the mu ent

time t. when the pulse from the delay circuit 19 starts the imaging unit 9, it is fed to the first input of the second memory element 10, the output of which is set to the actuating element 11,

Claims (2)

which affects the object of regulation. The fourth memory element 20 is also in a single state and signals good operation. 14 20 memory, and also sets in O the third memory element 18 and, through the OR circuit 17, the first memory element 5, moreover, arrives at the delay element 19 (a good multivibrator). The pulse from the output of the fourth memory element 20 acts on the control bridge in which the sensor 1 of the parameter is mounted. If the controller is healthy, then at the output of the threshold element (Schmidt trigger) 3 there will be a sequence of them. At a time fcy, the impulse from the amphibious output of the STD 13 produces actions similar to those in MOMeirr time t. If the sensor circuit of parameter I is broken or induced. short-term interference or for some reason the output of the threshold element 3 will not have a specific pulse sequence, the first memory element 5 will remain in state O. At time tg, the pulse from the delay circuit 1 starts shaper 9, but the pulse from its output in the absence of pa & the decisive potential from the output of the first element 5.pam cannot affect the input of the fourth memory element 20. The actuator is not controlled, which indicates that the regulator is not operating correctly. In the pre (stepping device, continuous operation is monitored, which results in an increase in the consistency of the control process, and the diagnostic cycle and the duty cycle are independent of each other, since a push-pull signal generator is used to increase the speed of the device. Formula of the invention containing a sensor connected in series, an amplifier and a threshold element, the first memory element connected in series, the first el And, the second memory element and the executive element, sequentially connected the second element And, the third memory element and the second actuating element, element OR, the output is connected to the second input of the first memory element and the input of the delay element, driver, output which is connected with the first inputs of the second and third elements I and the second input of the first element I, pulses and the fourth memory element, o t; which is characterized by the fact that, in order to increase the speed and reliability of the control, it contains a counter divider and a gene A push-pull CEDT detector consisting of a counting trigger and the fourth and fifth elements AND, the input of reHepaTqpa push-pull signals is connected to the output of a pulse generator, the input of a counting trigger in the first inputs of the fourth and fifth elements I, the second inputs of which are connected respectively to. directly in the inverse outputs of the counting trigger, the output of the fourth element AND is connected to the first input of the element OR, the output of the fifth element AND to the input of the element OR and the second and first inputs of the fourth memory element (the input of the third element memory), the second input of which is connected to the output of the memory box, the input of which is connected to the installation input of the counter-divider, the counting input of which is connected to the output of the horny element, and the output of the separator counter to the input of the fourth element the memory is connected to the parameter sensor, an inverse output with a third input of the And element, the second inputs of the second and third And elements, the third inputs of which are connected respectively to the memory and the first outputs of the first memory element. Sources of information that are taken into account at 1. Voronov V. G. and others. Automation of thermal processes in the production of compositive materials. Kiev, Technique, 1975, p. 122-143. 2. Authors certificate of the USSR N 696429, cl. Q 05TD27 / O2, 1979 (prototype).