Hengxinglong Electromechanical: What is the control method in the operation of the Shenzhen electric spindle?

In machine tool processing, the electric spindle usually adopts the frequency conversion speed regulation method, and there are three control modes: ordinary frequency conversion drive and control, vector control technology control and direct torque control.

So what is the control method in the operation of the Shenzhen electric spindle? I believe that many people have questions, today Hengxinglong electromechanical will answer with you!

Ordinary frequency conversion for scalar drive and control, its drive control characteristics for constant torque drive, output power and speed proportionally proportional, ordinary frequency conversion control dynamic performance is not ideal, at low speed control performance is not good, output power is not stable enough, also does not have C axis function. However, the price is cheap, the structure is simple, and it is generally used for grinding machines and ordinary high-speed milling machines.

Vector control technology imitates the control of DC motor, oriented by rotor magnetic field, and uses vector transformation methods to achieve drive and control, with good dynamic performance.

The vector control driver has a large torque value when it is just started, coupled with the simple structure of the spindle itself and the inertia is very small, so the starting acceleration is large, and the allowable limit speed can be achieved instantaneously after starting.

This kind of driver has two kinds of open-loop and closed-loop, the latter can achieve position and speed feedback, not only has better dynamic performance, but also can achieve C-axis function; while the former has slightly worse dynamic performance and does not have C-axis function.

Direct torque control is another new type of high-performance AC speed regulation technology developed after vector control technology, which has a novel control idea and a concise and clear system structure.

It is more suitable for the drive of high-speed electric spindle, and can better meet the requirements of dynamic characteristics and static characteristics of high-speed electric spindle high speed, wide speed regulation range, high-speed instantaneous quasi-stop, and has become a hot technology in the field of AC transmission.

The above is the Control Method of Shenzhen Electric Spindle Operation introduced by Hengxinglong Electromechanical Xiaobian to you, I hope that everyone will help after reading it!