Dynamo-Electric Converter Control TRIZ Cases
- Two-Phase Stepper Motor Excitation Switching for Stable Speed
Rotor-speed feedback switches between one-phase and two-phase excitation to keep a stepping motor stable under load changes and high speed.
- Vehicle Door Checker Using Motor Cogging Torque for Stable Hold
Added coaxial permanent magnets turn DC motor cogging into door-holding torque, reducing checker weight and wear while resisting external forces.
- Stepper Motor Coil Circuit for Fast Discharge and Energy Recirculation
A capacitor-based recirculating discharge circuit cuts stepper motor coil discharge time and reuses stored energy to raise operating speed.
- Spring Forming Machine Servo Interlock for Independent Tool Adjustment
Interlocking servo control lets forming tools, pitch tools, and the cored bar be adjusted independently for faster, more precise spring setup.
- Stepper Motor PWM Duty-Cycle Stall Detection Without Hall Sensors
PWM duty-cycle monitoring detects stepper motor stalls without Hall sensors, cutting driver complexity while protecting against overload damage.