JPS5842344Y2 - Reel drive control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reel drive control device for winding or unwinding a running material such as paper or iron plate by central drive.

BACKGROUND ART Conventionally, in drive control of a reel for winding (unwinding) this type of running material by central drive, a method has been used in which the tension of the winding (unwinding) material is controlled to be constant.

In this case, various compensation circuits are required to compensate for fluctuations in tension due to mechanical loss during acceleration/deceleration, and the tension control characteristics during acceleration/deceleration are determined by setting the amount of compensation.

Conventionally, this type of adjustment setting has been precisely performed by an operator using an adjustment resistor of an analog arithmetic circuit, which requires a sophisticated adjustment technique, which is a disadvantage of this type of adjustment.

In consideration of these points, the present invention uses a control device such as an electronic computer equipped with a central processing unit and a storage device to perform tension control, and at the same time automatically adjusts and determines acceleration/deceleration compensation and mechanical loss compensation amount. It is an object of the present invention to provide a reel drive control device that eliminates the above-mentioned drawbacks.

Normally, this type of control is performed by controlling the field speed of the winding (unwinding) motor in proportion to the coil diameter D of the coil, but in this case, the tension of the winding (unwinding) material is kept constant. The motor armature current required to do this is the current described below.

I2. The sum of I3 and I4 is Ij, and by controlling the motor armature current using Ij as a current reference, tension fluctuations due to acceleration/deceleration and mechanical integration can be eliminated and material tension can be controlled to be constant.

11: Coil acceleration/deceleration current I2: Coil core acceleration/deceleration current I3: Mechanical loss current I4: Tension current where, D□: Coil diameter, Do: Coil core diameter,
A: Material running speed, n: Coil rotation speed, T: Constant ■3=fω) (3) However, 1tK2 is a constant, fo) is a function of coil rotation degree n■4=T It=11 +I2 +Ia + I4 The present invention automatically detects and sets kx tkz tf (n) to solve the difficulty of setting it manually.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 and 2 are upper and lower feed rolls for running the material 50, and these feed rolls 1 and 2 are driven by a drive motor 3, and this drive motor 3 receives a signal from a feed speed detector 4 connected thereto. It is controlled by the input speed control device 14.

Reference numeral 7 denotes a winding (unwinding) electric motor which drives the coil core 6 to wind the running material 50 onto the core 6 to form the coil 5 or to unwind the coil 5.

8 is a coil rotational speed detector coupled to the winding (unwinding) motor 7.

9 is an online operation command contact that is closed when the winding (unwinding) device is applied to the line and operated; 1;
0 is a test run contact that is closed when setting various constants with the winding (unwinding) device disconnected from the line.

Reference numeral 12 denotes a generating unit that generates an online driving speed reference pattern based on an online driving command, and the speed control device 14 described above is connected to this online driving speed reference pattern generating unit 12.
The speed of the drive motor 3 is controlled to follow the output from the drive motor 3.

Further, reference numeral 13 denotes a generator that generates a speed reference pattern for a test run based on a test drive signal from the contact 10.

20 is a coil diameter detection unit that calculates the diameter of the coil 5 from the signal of the coil rotational speed detector 8 and the signal of the feed speed detector 4; 36 is a coil diameter setting device; and 23 is a field speed proportional to the coil diameter. a field current reference generator for generating; 2;
Reference numeral 5 denotes a field current control device that controls the field current of the winding (unwinding) motor 7 using the output signal of the field current reference generating section 23 as a current reference.

15 is the online driving speed reference pattern generation section 12;
Or an acceleration/deceleration detection section that detects the speed change rate (acceleration/deceleration) of the speed reference pattern generation section 13 for test operation; The generation section that generates the 5 acceleration/deceleration compensation current reference has 1 set of calculation functions built-in.
Similarly, reference numeral 18 denotes a generating section that inputs the acceleration/deceleration of the acceleration/deceleration detection section 15 and the coil core diameter from the coil diameter setting device 36 to generate an acceleration/deceleration compensation current reference for the coil core 6, and has two built-in calculation functions. , 19 is a generation unit that generates a mechanical loss current reference from the rotation speed from the coil rotation speed detector 8 and the coil diameter from the coil diameter detection unit 20, and has three built-in functions.
1 is a generation circuit that generates a current reference for winding (unwinding) tension; 22 is a current reference generation unit 17 for compensating for acceleration/deceleration of the coil;
, a coil core acceleration/deceleration compensation current reference generation section 18, a mechanical loss current reference generation section 19, and a tension component current reference generation circuit 21.

Reference numeral 16 indicates a speed for a test run in which the speed is controlled based on the signal from the test speed reference pattern generator 13 and the signal from the coil rotation speed detector 8! A monopod device 24 uses the output of the speed control device 16 or the output signal of the adder 22 as a current reference, and uses the armature current from the armature current detector 33 as a current feedback to wind (unwind) the electric motor of the motor 7. 34 is a compensation coefficient calculation device that samples the output signal of the speed control device 16 during test operation and calculates each coefficient, and the calculated results are transferred to data transfer paths 41 and 42.
, 43 to the respective reference generation units 17, 18, and 19.

26 is the output of the online operation speed pattern generator 12 when the line operation signal 9 is on, and the output of the test operation signal 1.
0 is in the on state, the test speed reference pattern generation section 13
31 and 32 are gates that allow the signal to pass during online operation; 27 is a gate that allows the signal to pass during test operation; 2B, 29° and 30 are gates that allow the signal to pass during online operation, and gates that allow the signal to pass during test operation. This is a gate that allows signals to pass through during the test stage, and the part surrounded by a dotted line in the figure is a control device configured using an electronic computer or the like.

Next, the operation of the above-mentioned constituent device will be explained.

(1) Determining the constant Kit K2 t f (n) Set only the coil core 6 on the reel without passing the material 50, and set the diameter Do of the coil core 6 using the coil diameter setting device 36.
Set manually.

As a result, the field flux of the electric motor 7 is changed to the field current reference generator 23.
, are automatically set by the field current control device 25.

Next, the test run contact 10 is closed, and the test run speed reference pattern generator 13 generates a speed reference pattern as shown in FIG. 2a.

Before this pattern occurs, gates 28, 29t3
At 0°31.32, the motors 3 and 7 are stopped because the gate 27 is in the off state and the gate 27 is in the on state.

When a speed pattern is generated as shown in FIG.
is controlled in speed following a speed reference pattern, and the output of the speed control device 16 serves as the motor armature current reference.

FIG. 2 shows the output signal of the speed control device 16.

First, the rotation speed is accelerated from O to n3, and the output signal L3 of the speed control device 16 after the acceleration is completed is stored in the compensation coefficient calculation device 34, and then the speed is increased to n2, and the output signal L3 of the speed control device 16 after the acceleration is completed is stored in the compensation coefficient calculation device 34. Store the output signal L2.

The same method is used up to the maximum speed n□. The relationship between the speed n and the output signal obtained in this way is as shown in FIG. Calculate the integral compensation amount.

The gate 30 is opened at the same time as this function fω) is set in the mechanical loss current reference generation section 19.

Next, the rotational speed is decelerated from nl to 0, the output L4 of the speed control section 16 at that time is detected, and based on the signal of the detection section 15 including this, the compensation coefficient calculating device 34 calculates the coil component acceleration/deceleration compensation amount. 2 is set as the coefficient for determining , and 2 is set as the inverse calculation using the formula 2, 2 is set as the coefficient in the acceleration/deceleration compensation current reference generating section 18 of the coil core, and the gate 29 is turned on.

(2) Determination of k Next, set the coil 5 with the material wound around it (coil core + material), manually set the coil diameter using the coil diameter setting device 36, and make the field flux Φ proportional to the coil diameter D1. , a speed reference pattern of constant acceleration/deceleration as shown in FIG. 3a is generated by the pattern generator 13.

As in the previous section, the electric motor 3 is stopped and there is no material 50.

The output signal of the speed control device 16 during acceleration/deceleration is as shown in FIG.

The acceleration/deceleration compensation current reference and mechanical integral compensation current reference of the coil core 6 are input to the adder 22 according to the coefficient determined in the previous section, and are added to the output signal of the speed control device 16 by the adder 35. The current reference shown in FIG. 3 is an acceleration/deceleration current reference only for the material excluding the coil core 6.

Using this value, acceleration/deceleration (dz-/dt), preset coil core diameter Dos, and coil diameter D The calculation is performed and □ is set in the coil acceleration/deceleration compensation current reference generation section 170.

In this way, each adjustment constant when calculating the acceleration/deceleration of the winding (unwinding) motor in center drive and the mechanical loss current reference is automatically set.

After automatically setting these constants, by turning on the online operation contact 9, the pattern generator 12 generates an online speed reference pattern, the gate 32 is turned on, and the feed roll 2 is operated by the drive motor 3 and the feed speed detector 4. , the speed is controlled by the mechanism of the speed control device 14.

Also, gate 27 is turned off, goo) 28, 29, 30, 3
1 is in the on state, and each current reference II tIz t
I3 tI4 is the coil acceleration/deceleration compensation current reference generator 17
, a coil core acceleration/deceleration compensation current reference generation unit 18, a mechanical loss current reference generation unit 19, and a winding (unwinding) tension current reference generation circuit 21, and are added in an addition unit 22 to become the current reference for the motor 7. By controlling the current using the armature current detector 33 and the current control device 24, the material tension during winding (unwinding) is controlled to be constant.

In the above embodiment, the dotted line in FIG. 1 is explained using a computer equipped with a central processing unit and a storage device, but the purpose can be achieved by using a hardware configuration such as an analog arithmetic unit and an analog memory.

According to the present invention, it is possible to automatically set each compensation amount of the conventional take-up (rewind) reel drive control device by adding a simple device or function. Difficulties can be solved.

[Brief explanation of the drawing]

Figure 1 is a block circuit diagram of an embodiment of the present invention, Figure 2a
, b and C and FIG. 3 a and b are characteristic diagrams for explaining the operation of the same embodiment, respectively. Roll drive electric motor, 5
... Winding (unwinding coil), 6...
Coil core, 7... Winding (unwinding) drive motor, 9... Contact for online operation, 10...
...Test drive contact, 12...Online driving speed reference pattern generation section, 13...Test drive speed reference pattern generation section, 15...Acceleration/deceleration detection section, 16...Speed control device for test operation, 1
T... Coil acceleration/deceleration compensation current reference generation section, 1
8.--Acceleration/deceleration compensation current reference generator of coil core,
19... Mechanical loss current reference generation section, 20...
... Coil diameter detection section, 21 ... Material tension current reference generation circuit, 23 ... Motor 7 field current reference generation section, 24 ... - Motor 7 current control device , 25
...field current control device for electric motor 7, 27゜28
．． 29, 30, 31. 32, 33...gate, 34...compensation amount coefficient calculation device, 36...
...Coil diameter setting device, 50...Material, 41.4
2,43...Pig transfer path.

Claims (1)

[Scope of Claim for Utility Model Registration] A reel drive control device for winding or rewinding while keeping the tension of the material constant; A speed control device, a coil acceleration/deceleration compensation current reference generation circuit, a coil core acceleration/deceleration compensation current reference generation circuit, a mechanical loss compensation current reference generation circuit, a circuit for adding these current standards, and a compensation coefficient calculation device are provided, (a) With only the coil core set on the reel, the winding motor is driven according to the step-like speed reference pattern for test operation, and the mechanical integral compensation amount is calculated by the compensation coefficient calculating device which inputs the output of the speed control device in the constant speed state. Calculate the coefficients to determine) Accelerate and decelerate the winding motor in the state of item (a) above, and input the output of the speed control device at this time. Use the compensation coefficient calculation device to determine the amount of acceleration/deceleration compensation for the coil core. To calculate the coefficient c) With the coil set in the coil core, apply a speed reference pattern for test operation of constant acceleration/deceleration to the winding motor, and use the compensation coefficient calculation device that inputs the output of the speed control device at this time to calculate the coil. Calculate the coefficients that determine the amount of acceleration/deceleration compensation, set these set coefficient values to each of the compensation current reference generation circuits for the coil, coil core, and mechanical loss, and add these with the other tension current reference generation circuits. A reel drive control device in which the armature current of the winding motor is used as a reference during operation.