Industry & Robotics
Industrial Motor Control
Three-phase current sensing, rotor position feedback and commutation for servo drives, VFDs and brushless motors.
Industrial Motor Control
Industrial motor control comes down to measuring accurately and controlling firmly. Servo and variable-frequency drives need wide-bandwidth three-phase current feedback for field-oriented control, while brushless commutation depends on reliable rotor position information.
RJMICRO covers the current side with linear and differential Hall current sensors for phase and bus current sensing, and the position side with Hall latches for commutation signals and 3D position Hall sensors for high-resolution angle feedback. The motor control SoC can take on BLDC / PMSM drive and protection logic directly.
Systems and scenarios covered
Servo and VFD
- Three-phase current sensing in servo drives
- output and bus current monitoring in VFDs
- over-current and stall protection
Brushless commutation
- BLDC / PMSM rotor position sensing
- Hall commutation signals
- low-speed and zero-speed position detection