Winding machine manufacturers analyze their main characteristics and system requirements

The working principle of AC inverter: The inverter technology is a technology that changes the frequency of the power source through the inverter to change the speed of AC asynchronous motor. The transformation of the DC through the inverter first, and then the transformation of the DC through the inverter to control the speed of the AC motor. The series of ring -shaped winding machines for automatic protection device projects of the winding machine to the inverter is to control the frequency of the input inverter, thereby controlling the frequency of the inverter output power supply, so that the speed of the AC motor follows the changes in the frequency of the output power supply. Variety.

The speed of the three -phase asynchronous motor is determined by the point frequency, the extreme pairing of the motor, and the rotation rate. The torque of the asynchronous motor is the interaction between the magnetic flux of the motor and the flow of the current flowing through the current. At the fixed frequency, if the voltage is certain and the frequency is only reduced, then the magnetic flux is too large, the magnetic circuit is saturated. Burning the motor. Therefore, the frequency and voltage should be proportional to change, that is, the frequency control the inverter output voltage is controlled while changing the frequency, so that the magnetic flux of the motor is maintained to avoid the generation of weak magnetic and magnetic saturation. Because the general inverter is generally controlled by V/F, that is, the transformer frequency frequency adjustment method is used to change the frequency and voltage motor control method. Therefore, the variable frequency speed adjustment method is selected. The variable frequency conversion speed adjustment of the automatic winding machine manufacturer is the frequency of changing the motor stator power supply and thereby changing its synchronous speed speed regulation method. Its characteristics:

① High efficiency, no additional loss during the speed adjustment process;

② The application range is wide and can be used for cage -type asynchronous motors;

③ Large speed adjustment range, hard characteristics, and high accuracy.

https://www.zhengtaifeng.com/en/raoxianji/500.html

The system requirements of the intelligent protection device design of the winding machine:

① Improve the quality of the winding and reduce safety accidents;

② The entire control system is simple, low, and small;

③ Install the system according to the requirements of human -computer engineering.

After investigation and analysis, this project determines that the pedaling speeder is modified to reduce the safety of the winding machine and improve the safety of the winding machine. The working principle of the pedal adjustable speed device is just like the working principle of a sliding resistor. The speed regulator is to change the resistance value of the circuit resistance of the circuit resistance by changing the externally controlled circuit resistance of the velocheter, and then change the voltage of the voltage of the circuit of the circuit at both ends of the circuit. Change the frequency of the output circuit of the winding inverter to reach the speed of the hits of the winding machine. Therefore, it is determined that in the pedal speed control control circuit, the winding machine protection system is installed, and the resistance of different resistance values is entered according to the degree of danger to change the speed of the winding motor, that is, the speed of the storage ring ring.

The demand is the safety protection device of the winding machine manufacturer. When the operator's hand enters the dangerous area, the infrared light emitted by the reflector reflects it into the receiver. The infrared sensor feeds the low -electric signal to the logic chip, and then the logic control chip is based on the basis of the logic control chip. The position of the input signal, through a single -chip microcomputer or logical judgment, outputs the control signal to the relay speed reduction module, so that the resistance string of different resistance values is connected into the pedal speed circuit, and then the voltage ratio of the pedal device is changed, thereby reducing the winding around The frequency of the wire frequency frequency is reducing the effect of reducing the speed of the winding motor, ensuring the safety of the operator, and the textile operator due to improper operation, causing damage, and effectively improving the safety of the winding machine.