JPS5842549A - Rewinding arithmetic control circuit - Google Patents

Abstract

PURPOSE:To contol fluctuation in tension due to variation in rewinding speed, by constituting an arithmetic rewinding control unit of center drive type such that a correction signal for a ratio between a rewinding speed detection value and an armature counterelectromotive force value are applied to an armature control system. CONSTITUTION:When a rollstock 1 is wound onto a winding bobbin 2 arranged to be rotated at a winding speed V by a motor 3, the motor 3 is controlled by applying the outputs of an armature control circuit 4 and a field magnetic control circuit 5 to the armature side and the field magnetic side of the motor 3, respectively. The field magnetic control circuit 5 receives output signals from an integration arithmetic circuit 9b in an rewinding arithmetic control circuit, and control the motor 3 in such a way that armature counterelectromotive force EMF detected by a voltage detector 8 corresponds to the rewinding speed. Further, the armature control circuit 4 receives an output from a multiplier 9e which multiplies an output from an adder 9f that addes the set output of a tension setting unit 9c to the output of a mechanical loss compensator 9g, by an output from a divider 9d that divides the above-mentioned V and EMF, and controls the motor 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding machine control device for controlling the tension of a material to be wound in a center drive type winding machine, and a winding calculation control device that eliminates the time delay problem that occurs in the field control response. to the device.

In general, when operating a winder that performs winding with a center drive, the drive motor of the winder is a DC shunt motor (hereinafter simply a motor In the case of induction rolling of such a motor, the relationship between the motor torque, tension T, and winding diameter r is as follows.
It is expressed as (1). Also, the relationship between the winding speed IILV, the motor speed INB, and the υ4 handle radius is expressed by equation (2).

V CIC, 2g r 6 N
・-(2) Then, from equation (1112), motor output P
As shown in the following example, if V and T are kept constant, P can be controlled to be constant. On the other hand, electric spear output P.

The relationship between armature back electromotive force ``, and armature current ■ is (4
) is shown by the formula.

P=KMF・■ ・・・・・・・(
4) Exclusively banko (3), from type 141, ■・T @(jiiMF -I --(
51. Therefore, in winding control, in the normal case where the set tension is constant and the armature current I is constant, 1 V control N MF (6
) The field of the motor is controlled so that From this, in controlling the electric machine pre-charge tItI,
・Mountain... It suffices if the relationship (7) is satisfied.

However, in the case where the armature back electromotive voltage is controlled by the field control of the electric machine as described above, the control response of the field control system is different, and the relationship in equation (6) is -
The present invention has been made in order to eliminate the above-mentioned drawbacks. By applying a correction signal of the ratio (V/iiiMF) between the take-off speed detection value and the armature back electromotive force detection value to the armature control system with a quick control response, the field control response can be improved from sudden changes in IIk take-off speed. This invention provides a winding calculation control device that can realize stable tension control without causing tension fluctuations that cause delays. 1 is a control system diagram showing an embodiment of the present invention, 1 is a winding material in the form of a sheet of a long object, 2 is a winding bobbin of a winding machine, 3 is an armature control circuit 114, and 6 is a field control 1
1g1 path, 6 is a winding speed detector which sends out a signal of winding speed ■ according to the rotation of the detection roll which is a winding speed detector for the material l to be rolled up. 8 is the armature back electromotive force EMF.
It is a voltage detector that gives a signal of . Here, all of the parts indicated by numerals 4 and 8 from numeral 1 are publicly known, so 4! A description of the functions for rs will be omitted.

9 is a winding calculation control circuit portion shown as an example of winding calculation & directing according to the present invention, and the ratio @i9L integral calculator 9b
, tension setter 9c+divider 9d, multiplier 9@.

It is composed of an adder 9f and a mechanical loss corrector 9g that provides a mechanical loss compensation signal as an example of loss compensation.

In this case, the winding material 1 is wound on the winding bobbin 2 by the winding bobbin drive of the electric motor 3. The armature control circuit 4 outputs are supplied to the electric machine standby, and the field I
This field control circuit consists of a system that is controlled by receiving the S output.

In such a motor operation, the field control circuit 5 is given the output of the integral calculator 9b, for example, the voltage #1' @ constant signal, and the field control circuit S controls the current of the field windings of the motors 4i & 3. Child back electromotive force EliiF
is detected by the voltage detector 8 and is controlled so that it is commensurate with @*Strength ■. In the armature control,
In response to the setting signal in which the output of the mechanical loss correction 1!9g is added to the setting output of the tension setting device 9C from the adder 9f, these two forces are further applied to the multiplier 9 by the signal generation of the divider 94, and this The armature control circuit 4 is controlled by obtaining the multiplier 9 output.

Such a control system effectively corrects the delay in field control response as described later, especially when the winding speed suddenly changes, and realizes stable tension control operation. Then, the winding speed ■ input to the integral calculator 9b and the armature back electromotive force E! 10', and the integral calculator 9b and the field control circuit 5 change the armature reverse voltage EMF from the field 1Iil of the electric am. However, if it were to depend only on this field control, it would require a non-negligible period of time until the field current is settled due to the time delay caused by the large time constant of the control system. And in this example, sI
It has a function of combining the armature control with the field control described in I by obtaining a correction signal of the armature current by the calculation output of the divider 9d. 9 In other words, according to such correction control, the correction signal is added. This results in the following.

I exam (V/iiiMF)・T・
(8) P Shin (IiiiMF)・I double ■ dispute T (9) Therefore, this corresponds to equation (3) 3. Note that this example is based on a constant tension setting example, but is limited to this. It is clear that the same effect can be achieved even if the tension is set to have a taper without being tapered. It is also clear that it can be applied to an unwinding machine that operates in the opposite direction to the winding action.
Furthermore, it goes without saying that the present invention is also applicable to the operation of a winding NiL machine to which a tension footing circuit and a compensation circuit for starting, winding thickening, etc. are added.

As described above, according to the present invention, it is possible to provide a simple winding calculation side device that can realize stable tension control even when the winding speed changes rapidly.

[Brief explanation of the drawing]

FIG. 1 is a control system diagram showing one embodiment of the present invention. 3. DC shunt motor (motor), 4. Armature control circuit, 5. Field control circuit, 6. Winding speed detector, 8.
Voltage detector, 9 Winding calculation control circuit part. Patent applicant Toyo Denki Manufacturing Co., Ltd. Representative Atsushi Doi 3IJ l Figure

Claims (1)

[Claims] In a IIk composter control device that performs field control to make the armature back electromotive force of a DC shunt motor proportional to the winding speed,
The winding calculation control side L is provided with an arithmetic circuit that calculates the ratio between the winding speed and the armature back electromotive force, and the output of this arithmetic circuit is used as an armature current correction signal.