This article is a direct current velocity modulation system design.
By the TMS320F240 primarily controller, its power loss bottom, the control function is strong, simultaneously, matches by the corresponding connection electric circuit, the package expands the D/A switch, triggers the electric circuit and so on. The D/A switch and triggers the electric circuit, the realization overall system control quantity output, achieves the electric motor velocity modulation the goal.
The system main circuit form uses three-phase all controls the bridge leveling circuit, also increased some protection circuits, like the fuse and so on uses the double closed loop velocity modulation, the electric current examination link and the rotational speed examination link, can obtain good is static, the dynamic performance
Calculates partially including the component parameter computation and the PID parameter starting value computation, has applied the project method. Uses the PID control algorithm.
The design has used the DSP controller, may reduce exterior primary device the integer, the software programming nimbly, the reliability is high.
