BLDC Motor PK?
BLDC Motor
and three-phase permanent magnet synchronous motor control principle is similar to a given command signal added to the AC servo system input, the motor shaft position feedback signal and compared to a given position, according to results of the comparison control servo movement, until it reaches the until the required position. PM, SM, and BLDCM Type II servo system constitutes the basic idea is the same.
In comparison, two kinds of permanent magnet brushless motors, BLDC Motor has a square-wave control of a simple, low cost, simple test device, the system is relatively easy to achieve them and so on. But the square-wave DC Gear Motor principle inherent defects, because the armature current and armature magnetic flux in the non-moving continuity of the presence of electromagnetic pulse, which pulse noise generated when running at high speed in the medium and low speed is stable torque-driven major obstacle. Torque ripple motor speed control features have made it worse, thus limiting the composition of the Square by BLDC Motor servo system in high-precision, high-performance requirements of the application of servo-driven situations (especially in low-speed direct-drive occasions). Therefore, the general performance of the electric servo drive control system, use square-wave BLDC Motor and the corresponding control mode. The PM, SM servo system requirements for the stator three-phase sinusoidal input current, can get better smoothness, with superior low-speed servo performance. Which is widely used in CNC machine tools, industrial robots and other high-precision servo drive system.