DC Motor Speed/Torque Control TRIZ Cases
- Fan Motor Torque Reversal for Fluid Path Restriction Detection
Reverse fan rotation lets the motor controller detect fluid path restrictions from torque, avoiding added pressure or flow sensors.
- E-Bike Boost Converter Circuit for Battery Voltage Drop
A switchable boost circuit raises e-bike motor voltage under load, maintaining output as battery voltage falls and improving climbing performance.
- Multi-Rotor UAV Phase Control for Tonal Noise Spreading
By shifting rotor speed and phase across rotor groups, this UAV case spreads tonal frequencies to make multi-rotor noise less annoying.
- Concrete Vibrator Speed Control for Consistent Energy Delivery
Feedback control adjusts motor voltage from speed and voltage-draw data to keep concrete vibration consistent and reduce pour defects.
- Vehicle Air Flap Control Using Current-Based Position Feedback
Current sensing in shared vehicle flap control replaces position sensors and extra feedback wires, cutting actuator cost and wiring complexity.