1. Torque Control Technology

2. Load torque and speed fluctuation 1P Rotary Bigger Speed Fluctuation Higher Vibration

3. Comparison of Torque Control Method DC Drive MethodOutlineDifficulty Vibration Control Cost 120 0 rect-wave Open loop Preset PWM pattern LowMed.Low 120 0 rect-waveFeedback Detect rotor speed and adjust Med.GoodLow OYL CONTROLLER

4. Torque Control Compression Compression – Torque  – Speed  – Current  – PWM Duty Cycle  Decompression Decompression – Torque  – Speed  – Current  – PWM Duty Cycle  Gas intake Gas discharge Operating from 15Hz to 45Hz Operating from 15Hz to 45Hz

5. Torque Control Normal PWM Duty Cycle Without Torque Control With Torque Control During Compression PWM Duty Cycle During Decompression

6. Visual Comparison Without Torque Control Running at 15Hz With Torque Control Running at 15Hz

7. Thank You