Analysis of Advantages and Disadvantages of Stepper Motor Drive Method
4. Current comparison chopper drive (currently the main technology used on the market)
The current comparison chopper drive converts the stepper motor winding current value into a certain proportion of voltage, compares it with the preset value of the D/A converter output, and compares the result to control the power tube switch to achieve the control winding phase current. purpose.
Advantages: The motion control simulates the characteristics of the sine wave, greatly improves the performance, the motion speed and the noise are relatively small, and the relatively high subdivision can be used, which is the current popular control method.
Disadvantages: The circuit is more complicated, it is difficult to control the interference in the circuit and the theoretical requirements are consistent, it is easy to generate jitter, and the peaks and troughs that form the sine wave are controlled, which may easily lead to high-frequency interference, which may cause the driving component to heat up or due to excessive frequency. Aging, which is the main reason why many drivers are prone to red light protection when they are used for more than a year.
5. Submersible drive
This is a brand new motion control technology, which is a new driving method that is innovative under the premise of current current chopper driving technology to overcome its shortcomings. The core technology is to increase the driving element heating and high frequency suppression protection technology under the premise of current comparison chopper driving.
Advantages: In addition to the advantages of current comparison chopper drive, the heat is particularly small and the service life is long.
Disadvantages: The new technology, the price is relatively high, the current matching requirements for each stepper motor and driver are relatively strict.
