Tension control method

Abstract

The invention discloses a tension control method which comprises the steps: 1, unreeling a tape coil by an unreeling roll, and winding the unreeled tape coil onto a reeling roll through a tension roll; 2, acquiring the original roll diameters of the unreeling roll and the reeling roll; 3, acquiring time-varying real-time roll diameter(s) of the unreeling roll and / or the reeling roll in a tape coil winding process; 4, integrating input information in the steps 2 and 3, carrying out an interpolation operation on the input information, respectively working out rotation positions of motors of the unreeling roll and the reeling roll once the tape coil is wound by a distance L, and respectively outputting the rotation positions to the motor of the unreeling roll and the motor of the reeling roll through an information output unit; and 5, running the motor of the unreeling roll and the motor of the reeling roll according to the position information output in the step 4, wherein the interpolation operation in the step 4 is that an interpolator carries out calculation on pulses required by the rotation of the motors or a bus controller carries out the calculation on the positions of the rotation periods of the motors. The tension control method disclosed by the invention is simple in control manner, easy to realize, high in control precision and good in system operation stability.

Description

technical field

[0001] The invention relates to the technical field of control, in particular to a tension control method. Background technique

[0002] Tension control is widely used in the actual production of all walks of life, generally used in the existing technology:

[0003] 1. DC control (DC speed regulation, DC braking), which is characterized by adjusting the tension output by adjusting the braking amount of the unwinding motor. The disadvantage is that the synchronization performance of DC mechanical transmission is not ideal, and it is impossible to achieve constant line speed and constant tension, especially for large packages.

[0004] 2. Hydraulic control (hydraulic station, flow proportional valve), which is characterized by adjusting the tension output by adjusting the flow proportional valve of the unwinding motor. Existing problems First, the sealing performance and reliability of domestic hydraulic parts are poor. Second, although the quality of import...

Examples

Embodiment 1

[0109] In the case that the unwinding roller and the winding roller are both cylindrical, a roll diameter measuring device is installed on the outside of the unwinding roll and the winding roll, and the instant roll diameter change value of the unwinding roll and the winding roll can be measured in real time, and Through the information input unit, it is sent to the data calculation unit, and the data calculation unit obtains the number of pulses required by the unwinding roller and the winding roller at a fixed L distance per winding through interpolation operations Further, the information is sent to the unwinding roller motor and the winding roller motor through the information output unit, and then the precise control of the tension is realized through the positional relationship.

Embodiment 2

[0111] When the unwinding roller is cylindrical and the winding roller is an elliptical cylinder, the winding roller starts at a fixed position. The roll diameter measuring device is installed on the outside of the roll, which can measure the real-time roll diameter change value of the unwinding roller and the winding roll, and send it to the data calculation unit through the information input unit, and the data calculation unit can obtain the unwinding roll and winding roll The number of pulses required by the winding roller for each winding of a fixed distance L Further, the information is sent to the unwinding roller motor and the winding roller motor through the information output unit, and then the precise control of the tension is realized through the positional relationship.

Embodiment 3

[0113] Knowing the initial winding diameter and tape thickness of the unwinding roller and the winding roller, the change value of the winding diameter of the unwinding roller and the winding roller can be obtained through calculation, and sent to the data calculation unit through the information input unit, the data calculation unit The number of pulses required by the unwinding roller and the winding roller at a fixed distance L per winding is obtained by interpolation Further, the information is sent to the unwinding roller motor and the winding roller motor through the information output unit, and then the precise control of the tension is realized through the positional relationship.

technical field

[0001] The invention relates to the technical field of control, in particular to a tension control method. Background technique

[0002] Tension control is widely used in the actual production of all walks of life, generally used in the existing technology:

[0003] 1. DC control (DC speed regulation, DC braking), which is characterized by adjusting the tension output by adjusting the braking amount of the unwinding motor. The disadvantage is that the synchronization performance of DC mechanical transmission is not ideal, and it is impossible to achieve constant line speed and constant tension, especially for large packages.

[0004] 2. Hydraulic control (hydraulic station, flow proportional valve), which is characterized by adjusting the tension output by adjusting the flow proportional valve of the unwinding motor. Existing problems First, the sealing performance and reliability of domestic hydraulic parts are poor. Second, although the quality of import...

Examples

Embodiment 1

[0109] In the case that the unwinding roller and the winding roller are both cylindrical, a roll diameter measuring device is installed on the outside of the unwinding roll and the winding roll, and the instant roll diameter change value of the unwinding roll and the winding roll can be measured in real time, and Through the information input unit, it is sent to the data calculation unit, and the data calculation unit obtains the number of pulses required by the unwinding roller and the winding roller at a fixed L distance per winding through interpolation operations Further, the information is sent to the unwinding roller motor and the winding roller motor through the information output unit, and then the precise control of the tension is realized through the positional relationship.

Embodiment 2

[0111] When the unwinding roller is cylindrical and the winding roller is an elliptical cylinder, the winding roller starts at a fixed position. The roll diameter measuring device is installed on the outside of the roll, which can measure the real-time roll diameter change value of the unwinding roller and the winding roll, and send it to the data calculation unit through the information input unit, and the data calculation unit can obtain the unwinding roll and winding roll The number of pulses required by the winding roller for each winding of a fixed distance L Further, the information is sent to the unwinding roller motor and the winding roller motor through the information output unit, and then the precise control of the tension is realized through the positional relationship.

Embodiment 3

[0113] Knowing the initial winding diameter and tape thickness of the unwinding roller and the winding roller, the change value of the winding diameter of the unwinding roller and the winding roller can be obtained through calculation, and sent to the data calculation unit through the information input unit, the data calculation unit The number of pulses required by the unwinding roller and the winding roller at a fixed distance L per winding is obtained by interpolation Further, the information is sent to the unwinding roller motor and the winding roller motor through the information output unit, and then the precise control of the tension is realized through the positional relationship.

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