CS205294B1 - Regulator with discrete alternating parameters for electric drive unit of winding and unwinding machinery - Google Patents

Description

The invention relates to a controller wiring which allows to discreetly automatically adjust the parameters of the electric drive unit of a winding or unwinding device and which uses information about changes in the moment of inertia of the controlled system.

The automatic control circuits of the electric drives of the pulling and unwinding devices used up to now usually contain controllers with fixed parameters. However, in the controlled system, the winding / unwinding process increases / decreases / radius of the winding and consequently monotonically changes the equivalent moment of inertia reduced to the shafts of the electric drive unit, which is particularly pronounced in systems with unit or small transmission reducer number. Changing the parameters of the controlled system while not respecting these controller changes has an adverse effect on the quality of the control circuits and hence on the quality of the winding / unwinding / process itself. Nowadays this problem is solved in the world by the application of adaptive control circuits, whose synthesis is very demanding. The use of adaptive controllers is associated with the identification of variable parameters and the determination of a stable area. The operation of the adaptive loop knives can be problematic. The system is complicated and relatively expensive. For these reasons, the penetration of adaptive control circuits into industrial applications of the aforementioned type is outstanding.

The above-mentioned drawbacks are eliminated by a controller with discrete variable parameters according to the invention, which is based on the fact that the analog-pulse converter, with input of information about the angular position of the winding spindle and hence the winding position, is connected to the ellipulizer counter. adjustable or fixed content levels with output connected to logic product inputs. All logic products have a second input together connected to one input amplifier segment of the operational amplifier,

209294 in office.! controller with feedback impedance & second input resistor of inverting input. Outputs of logic products are sequentially connected to terminals of other input resistance segments *

The respective functional dependence of the parameter being adjusted as a function of the winding radius is approximated by a step function created by the values of the input resistance segments of the operational amplifier, where the content differences between the levels in the pulse counter are constant or vice versa. The accuracy of the approximation can be controlled by adjusting the outputs associated with the levels in the pulse counter, or by changing the values of the input resistance segments or by changing their number.

The advancement of a controller with discrete variable parameters according to the invention is that, with sufficiently precise approximations, the change in the moment of inertia of the controlled system of any influence on the stability of the control circuit is respected. By compensating for the moment of inertia by discrete adjustment of the regulator, it is possible to maintain an approximately constant image transmission of the open circuit, thereby ensuring its uniform quality throughout the winding process.

In the attached drawing, there is a schematic diagram of a discrete-variable parameter controller consisting of an analog-pulse converter A1, a divider or multiplier D1, a pulse counter P1, logic products BJ, B2 ... Bn, the operational amplifier QZ, the trigger impedance J, the input resistance R1 of the amplifier consisting of the segments R1Q, R11. . . R1 n and the second input resistor R2 of the inverting input.

The device operates: angle information is derived from the angular position of the winding spindle by means of an analog-pulse converter Al in the form of a sequence of pulses entering the pulse divider or pulse multiplier DI. The pulses advance to the pulse counter PI with outputs A1, A2 ... An, corresponding to the fill levels of the pulse counter PI. Each of the outputs

AI, AJ ... An is connected to one input of logic products BJ, B2. . . Bn, the second input of all logic products is connected by a common bus to the terminal of one segment R10 of the input resistor RJ. By switching the pulse counter PI, the sequential outputs A1,

AJ. . . An to the state of logical one and logical product elements BJ, B 2 ♦. . Β n shortens the segments R1 1, R 1 2 ... R1n of the input resistance RJ. By successively shortening the segments Rit, R t 2 ... RIn / where the R10 segment with the common bus can be located elsewhere in the chain / input resistor RJ, the parameters of the regulator implemented on the amplifier opener with the resistive impedance _Z and the second input the resistance RJ of the inverting input, which is an approximate respected change in the moment of inertia of the controlled system.

and

The controller with discrete variables according to the invention can be used in all control circuits, where there are continuous changes in the parameters of the controlled systems and where these changes are a priori known as functionally dependent on some measurable quantity and where they can be approximated by step function , in which the adjustment element need not be merely the input resistance.

Claims (1)

l> R E OMET V Y L E Z Z A controller with discrete variable parameters for an electric winding and unwinding power unit using inertia moment change information, characterized in that the analog-pulse converter (A!) With the input of the angular position of the winding spindle and thus of the winding radius is through a divider or a pulse multiplier (D1) connected to a pulse counter (1 * 1) having adjustable and / or fixed content levels with outputs (AI), A2, An / connected to the inputs of the logic element members (B1, B2 .., Bn), wherein all the logic product elements (III, B2, Bn) have a second input jointly connected to one input resistor segment (R1) of the operational gosifier (OZ), as the feedback irradiance controller (Z) and the second input resistors (R2) of the inverting input, and the outputs of the logic products (B1, B2 ... Bn) are sequentially connected to terminals of other segments (R11, R12) , R13 ... R1n (input resistor / R1).