As an emerging control system, the embedded system has obvious control advantages in the industrial field. As a low-power, cost-effective, and highly flexible control core, the embedded system is bound to replace the traditional industrial computer It plays an indispensable and important role in machine control. Embedded measurement and control system used in industrial field, especially in the field of CNC pipe bending machine, will definitely bring a new round of revolution to the development of CNC tube bender!
First, the hardware selection of pipe bending machine measurement and control system
In the process of designing an embedded measurement and control system for a pipe bender, the choice of embedded microprocessor is particularly important. The foundation of an embedded microprocessor is the CPU in a general-purpose computer. In order to meet the special requirements of embedded applications, although the embedded microprocessor is basically the same in function as the standard microprocessor, various enhancements have been made in terms of operating temperature, anti-electromagnetic interference, and reliability. Embedded microprocessors have the advantages of small size, light weight, and low cost.
Selection of Servo Motor for Pipe Bending Machine
管 The servo motor of pipe bender is also called executive motor. In the automatic control system, it is used as an actuator to convert the electric signal received into the angular displacement or angular velocity output on the motor shaft. Divided into DC and AC servo motors, the main feature is that when the signal voltage is zero, there is no rotation, and the speed decreases uniformly with the increase of torque. Servo motors mainly rely on servos to locate by pulses. When a servo motor receives a pulse, it will rotate the angle corresponding to 1 pulse to achieve displacement. Because the servo motor itself has the function of sending pulses, each time the servo motor rotates one At the angle, a corresponding number of pulses will be sent, so that it echoes the pulses received by the servo motor, or is called a closed loop. In this way, the system will know how many pulses are sent to the servo motor, and how many pulses are received at the same time. , It can control the rotation of the motor very accurately, so as to achieve accurate positioning, which can reach 0.001mm.
