JPS58100914A - Control device for coiling - Google Patents

Abstract

PURPOSE:To perform the shortest stop and to prevent a coil from deviated coiling, by controlling an armature current so as to maintain the deceleration rate at the time of stopping constant in accordance with the coil diameter. CONSTITUTION:A signal, corresponding to a field current to be given from a function generator 7 used for the field current standard, is outputted basing on the coil diameter to be given from a coil diameter arithmetic device 8. The signal is collated with a detected value of the field current to give the difference to a field current controlling device 6, then the device 6 controls a power source 5 used for a field system in accordance with the signal in order to control the field current. On the other hand, a coil diameter obtained from a coil diameter arithmetic device 8 is given to an armature current arithmetic device 10 to compute an armature current I in order to maintan the deceleration rate constant. The computed value is given to a current standard device 9 to collate the current standard from the device 9 with the actual armature current, and the diference is given to a motor current controlling device 3 to give its output to a power source 2 thereby controlling the armature current.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a winding control device for controlling the winding of a strip of rolled or cold-treated steel plate, aluminum foil, or the like.

TECHNICAL BACKGROUND OF THE INVENTION In conventional winding control devices, such as those used in rolling mills, processing lines, etc., the electric motor that drives the winding machine changes the change in field flux proportional to the winding thickness of the coil diameter to generate a back electromotive force. The product of the armature current and the armature current is controlled so that it is one foot.

FIG. 1 is a block diagram showing an example of such a winding control device. In the figure, 1 is an electric motor for driving the winding machine, and 2 is a power supply device for driving the electric motor 1. 3 is a current for the motor that controls the power supply device 2 to flow a field current equal to the reference value according to the difference between the reference value of the current reference device 4 and the detected value of the field current of the motor 1. It is a control device. Furthermore, 5 is the power supply device for the electric field of Shun 1. Then, the field current reference function is generated to output a value corresponding to the result of the coil diameter calculation device 8 which calculates the coil diameter from the first rotation of the field current detection and the rotation speed of the winding reel or the winding reel. Device 7
This output is matched with the output of the field cage flow splitter 1 device 6, and the field power supply device 5 is controlled by this output, thereby controlling the field current.

Problems with the Background Art When the diameter of the coil wound in a winding machine that performs such control reaches a predetermined value, the strip is cut by, for example, a snippet. In this case, the 11L excitation for the winding machine performs regenerative braking while keeping the field magnetic flux φ at a value corresponding to the coil diameter at that time, so the electric current flows backwards and deceleration is performed by torque - foot side l. There is. In addition, if the strip to be wound breaks due to such a thing, deceleration is performed by dynamic braking.

However, when such a control is performed, the rotating coil is stopped rapidly, and if the deceleration rate is large, a deviation may occur in the rotational direction inside the coil, which may cause a cracking sound in the spinning material.

This kind of house can be thought of as follows.

That is, the moment of inertia (GD) of the winder is given by the following equation 1).

G D2= a + b D2-=-1) where D is the coil diameter a and b is a constant. At this time, if the armature current is Ia and the field strength φ is -W, then the torque T is given by the following equation 2) Given by t.

T=Ia −Cφ 2) However, C is a constant, and the deceleration rate dN/dt is given by the following equation 3).

dN-375/Ia-Cφ ・・・・・・・・・3)
dt a+bD Here, Cφ is limited to a value proportional to the coil diameter, so the following equation 4) is obtained.

Cφ=C'D...4) However, since C' is a constant, the following equation 5) can be obtained from equation 4).

ↇ÷375・Ia・C'τ■ "...5) dt As is clear from this equation 5), the speed rate dN/dt changes depending on the coil strength and the value of the armature current Ia. .on the other hand,
After the plate is cut, the armature current La remains controlled at a constant iti, and if the coil diameter is large, excessive deceleration torque may be generated and winding misalignment may occur. Also, when decelerating plate waves by dynamic braking, use a braking resistor.
The resistor is connected in parallel to the PiL machine to consume the rotational energy of the winder. In such a method, the maximum deceleration torque is generated when the resistance is applied, and the deceleration torque cannot be controlled by the coil diameter, resulting in winding misalignment.

Here, the armature current Ia during deceleration is expressed as Leonard power supply'
Think about what you want to control.

In this case, since the amperage current Ia is constant, the deceleration rate dN/dt changes depending on the diameter of the coil, and as is clear from equation 5), when D=DO=JT7, the armpit is large. Therefore, Jin's coil is good.

If 5- is in the actual position, the upper HC coil diameter Do is set even if the upper HC coil diameter is set so that winding misalignment does not occur in the small coil diameter or the innermost coil diameter than C. This may cause winding misalignment.

For this reason, it is necessary to set the armature current Ia even lower, so that the deceleration rate aN/dt becomes longer during deceleration [111], which is smaller in all ranges of the coil diameter.

Purpose of the Invention The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a winding control device that prevents winding misalignment and performs deceleration in the optimum and shortest deceleration time depending on the coil diameter. be.

Summary of the Invention In other words, the present invention uses a winding control device based on the coil diameter given from the coil diameter control device @8 in order to keep the deceleration rate dN/dt constant. The Isogo current is calculated, and this value is used as the current reference to calculate f:%.

Embodiment 6 of the Invention - Hereinafter, an embodiment of the present invention will be described with reference to the block diagram shown in Fig. 2, with the same reference numerals assigned to the same parts as in Fig. 1.
Explain. In the figure, 10 is a 'Kame 1 scattering current calculation device, and the following 6 is used to set the deceleration rate dN/dt expressed by the formula 5) to one foot, depending on the coil diameter DK given from the coil diameter calculation device 8.
), the yoshimi state current I is determined.

Then, this armature current I is applied to the current reference device 9 so that the actual armature current IK is equal to the calculated armature current IK.
Control the root current Ia.

In such a configuration, the field current reference function generator 7 is based on the coil diameter DK given from the coil diameter calculating device 8
A signal corresponding to the field current to be applied is output.

Then, this (N) is compared with the detected value of the actual field current and the difference is given to the field current control device 6. The device 5 is controlled to control the field current.On the other hand, the coil diameter obtained by the coil diameter calculation device 8 is given to the winding machine current calculation device 10 to keep the deceleration rate dN/dt constant. The armature' ionization I is calculated.

This calculated value 111 is then given to the reference device 9.

Then, the current reference outputted from the flow reference device 9 is compared with the actual current flow Ia, and the difference is applied to the current control device 3 for the safety of the movement, and its output is applied to the power supply device 2. to control the armature current Ia. Therefore, the Kamekiko current Ia has a constant deceleration rate dN during deceleration depending on the coil diameter p.
/dt, so this deceleration rate dN/d
t is set to the maximum within a range that does not cause winding misalignment in the coil. In this way, regardless of changes in the coil diameter, the optimum conditions, that is, the shortest possible stop can always be achieved, and no winding misalignment will occur.

Effects of the Elderly As described above, the present invention controls the CI and current so that the deceleration rate at the time of stopping is constant according to the coil diameter, so it is possible to stop in the shortest possible time, and there is no possibility of winding misalignment of the coil. It is possible to provide a winding control device that can prevent the winding from occurring.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a conventional winding control device;
FIG. 2 is a block diagram showing one embodiment of the present invention. 1...'14j, Tsutomuiso, 3... Electric motor current control device, 5... Field power supply device, 6... Field current control device, 7... Field current reference function Generator device, 8... Coil diameter control device, 9... Current reference device, 10...'
A-Kiko-Ga-ryu performance equipment. Applicant's agent Patent attorney Takehiko Suzue 9- Figure 1

Claims (1)

[Claims] An electric motor for driving a strip winding machine, a current control device for the motor that controls the setting value of an armature current total current reference device of this motor, and a current control device for controlling the winding machine to the winding machine based on the rotational speed of the winding machine. A coil diameter calculation device that calculates the taken coil diameter, and a field current reference function generator that generates a relation e that should keep the back electromotive force and armature current constant from the calculated value of this coil diameter calculation device. and,
A field current control device that controls the field current of the motor in accordance with the output of the field current reference function generator, and a coil diameter calculated by the coil diameter calculation device when cutting the strip. A winding control device comprising an electric current control device that controls the setting value of a VC current reference device so as to keep the deceleration rate of the scatterer constant.