Tension controller

The tension controller is a system developed by a single-chip microcomputer or some embedded devices and peripheral Circuits. It is a control instrument. It can directly set the tension value required to be controlled, and then directly input the signal of the tension sensor (usually millimetres). Volt level) is used as the tension feedback value. After the deviation is obtained through comparison, it is input to PID and other controllers for processing, and it is best to output to the peripheral actuator for control, and finally achieve the goal of the smallest deviation and the fastest system response.

1. What is a tension controller

In the industrial control industry, in some belt-shaped and linear products, it is often necessary to control the tension to meet the production requirements. The tension controller is an instrument to control this type of tension. The tension controller also has the so-called manual control function, which generally means that a certain output can be given to the actuator through the tension controller (usually the current amount of the motor); the general tension force controller also has the function of calculating the roll diameter , Generally used in the winding equipment, there are unwinding and winding points; in addition, there is a taper adjustment function, which can directly set some process requirements in the controller.

2. Wiring diagram of tension controller

The manual tension controller is to manually adjust the excitation current of the clutch or brake according to the change of the winding or unwinding roll diameter to obtain a certain tension.

Semi-automatic tension controller is also called coil diameter tension controller. The controller can automatically detect the coil diameter of rewinding or unwinding, and automatically adjust the excitation current of the clutch or brake according to the set target tension and the measured coil diameter. The tension of the coil.

The automatic tension controller can measure the actual tension of the coil, and automatically adjust the excitation current of the clutch or brake after PID calculation according to the set target tension and the actual measured tension to control the tension of the coil. The fully automatic tension controller has extremely high tension control accuracy and is suitable for occasions that require high tension control accuracy.

3. What is the principle of the tension controller

Coil static magnetic powder clutch and magnetic powder brake are automation devices that control the input current and change the output.

When the coil is not energized, the input shaft rotates, the magnetic powder is pressed against the inner wall of the clamp ring under the action of centrifugal force, and the output shaft does not contact the input shaft. At this time, it is idling.

When the coil is energized, the magnetic powder generates a magnetic link under the action of the magnetic force lines, so that the output shaft and the input shaft become a rigid body to rotate, and slippage occurs when overloaded, and it is working at this time. So as to achieve the purpose of transmitting torque.