SU551603A2 - Automatic control device - Google Patents

Description

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This invention relates to automation. and can be used to create small-sized devices for automatic adjustment of parameters of a wide range of radio engineering or optomechanical devices, for example, quantum generators.

Automatic control devices are known that contain proportional and integral control loops, in which potentiometric blocks, amplifiers of direct current or digital regulators p.} | G23 and (H) are commonly used. .

Of the known devices for automatic regulation, the closest in technical essence is a device containing circuits with proportional and integral laws of regulation, in which the integrating element is connected to the amplifier output and through the keys and rectifiers via the keys and rectifiers.

However, the known device has a limited scope, as well as a single element, the input into it is saturated with saturation, i.e. at a steady-state maximum voltage, it is not possible to return to the opposite edge of the dynamic range of the device and search for the operating point of the control object. .

The purpose of the invention is to expand the field of application of the device.

This is achieved by adding mixtures to the known device; Tel, the third and fourth keys, the amplifier output being connected via the third and four keys respectively to the first w second inputs of the cell whose output is connected to the inputs of the first and second keys

FIG. 1. shows a block diagram of a device for automatic regulation; FIG. 2 is a voltage chart.

In the device, the comparison element 1 is connected to the amplifier 2, the output of which through the keys 3 and 4 is connected to the first and second inputs of the mixer 5. The output of the mixer 5 is connected to the keys 6 and 7 with the corresponding rectifiers 8 and 9 of the integrating element 10. In addition The output of the mixer 5 is connected to the summing element 11, to the other input of which the output of the integrating element 10 is connected, and the output of the summing element 11 is connected to the control object 2. The device operates as follows. When the device is turned on, the voltage on the integrating element 1О - Uj. (point ig in Fig. 2) is set in the region of the mean value. At the same time, the voltage at the output of the amplifier 2 - U must be within the selected part of the dynamic range. This range is determined by the lower and upper voltage levels, respectively (i k, at which keys 6 and 7 are turned on. When this condition is fulfilled, the output parameter error if the voltage U2 is in this range, then the voltage} (- does not change (section t -. When the voltage is reached, the values of U (point i) turn on key 6 and The capacitance of the integrating element is charged. This leads to an increase in the voltages on the summing element 11 - U, which, due to the feedback in the device, reduces the error signal and brings the voltage U closer to the average value (point i). U to the value of U (then i), the key 6 is turned off, and the voltage of the integrating element U is remembered. On subsequent achievements at the Uj value of U (points t,, i), this process is repeated until the integrator has fully charged (points tj, 6) After the charge of the capacity of the integra of the charging element is stopped (points ty, tj), the error signal increases, and when the voltage is reached, the value equal to the voltage of the switch of the key (point t), the key 3 is turned off and the capacity of the integrating element is discharged to the lower level (point tg). Thereby, the adjustment voltage of the adjustment volume returns to the opposite edge of the dynamic range, where the search for a new equidistant point of the object takes place. If the voltage U reaches the value Uj, (point t:), switch 7 is turned off and the capacitance of the integrating element is discharged. This leads to a decrease in the voltage on the summing element 11-C, which, due to feedback in the device, reduces the error signal and brings the voltage C to the average value (dot). When returning the voltage, Uyg (point) key 7 is turned off and life is remembered. With subsequent advances in voltage and values (J (point t, i), this process is repeated until the discharge capacity of the integrating element (point,) is completely discharged. When the discharge is stopped, the signal also increases when the voltage O reaches a value equal to the voltage; The response of the 4-Ui key (TO4Ka t) is triggered, the key 4 is turned on and the capacity of the integrating element is charged to the upper level (point), and the adjustment voltage of the control object returns to the opposite edge of the dynamic range where the search for a new equidistant The points of the object. The adjustment of the operating point, i.e., the transition from one end of the dynamic range to the other, allows you to have a range of the regulating element not exceeding the distance between two equidistantly located working points of the object. As a result, a small adjustment range of the regulating element, which will reduce the distortions in the resonator. No. 476548, for example, in order to expand the field of application of the device, it contains a mixer, the third and fourth keys, and the output of the amplifier is connected via the third and fourth keys respectively to the first and second inputs of the mixer, output which is connected to the inputs of the first and second keys. IS1-EUMBERS of information taken into consideration in the examination; . 1. Gitis EI. Automatics of radio equipment, M., 1964, p. 111, Energy. 2. Besekersky V. A. - and others. Theories of systems of automatic regulation, M., 1972, Science, 3. USSR author's certificate No. 476548, M. Cl. GT05 B 11/01, 27.11.72 (prototype).

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