Select by Motor Control Algorithms
Types of algorithm
Motor Control Algorithms
The field of motor control has undergone rapid expansion due mainly to the advantages of semiconductors in both power and signal electronics and the processing capability of micro-electronic microprocessors and DSPs. These technological improvements have enabled the development of really effective drive control with ever lower power dissipation hardware and ever more accurate control structures. The electrical drive controls have become more accurate in the sense that not only are the DC current and voltage controlled but also the three-phase currents and voltages are managed by the combined use of MCU and software algorithms.
Comparison of Different Motor Control Algorithms
The table below capture the salient characteristics of the most prevalent motor control algorithms
Motor Control Algorithm Comparison
| Control Algorithm | Motor Type | Torque Controllability | Feedback Sensors | MCU Processing Requirements |
|---|---|---|---|---|
| TRIAC Control | Universal / DC | No Torque Control | Not Required | Not Required |
| PWM Chopper Control | Universal / DC | No Torque Control | Not Required | 8 bit |
| V/F Control | AC | Poor Dynamic Torque Control | Not Required | 8-16 bit |
| Trapezoidal Drive Control | BLDC | High-Harmonic Loss, High-Torque Ripple | Hall Sensor | 8-16 bit |
| Sinusoidal Drive Control | BLDC, AC | Low-Harmonic Loss, Low-Torque Ripple | Hall Sensor, Encoder | 16-32 bit |
| Simplified Vector Control | BLDC, AC | Low-Harmonic Loss, Low-Torque Ripple | Hall Sensor, Encoder | 16-32 bit |
| Vector Control | BLDC, AC | Low-Harmonic Loss, Low-Torque Ripple | Hall Sensor, Encoder | 32 bit |
| Sensorless Trapezoidal Drive Control | BLDC | High-Harmonic Loss, High-Torque Ripple | Not Required (Back-EMF) | 16 bit |
| Sensorless Vector Control | BLDC, AC | Low-Harmonic Loss, Low-Torque Ripple | Not Required | 32 bit |
