Single Motor Speed/Torque Control TRIZ Cases
- Single Hall Sensor BLDC Motor Control via Back-EMF Position Detection
A microprocessor calculates real-time rotor position using a single hall sensor and back-EMF signals to drive three-phase windings.
- Asymmetrical Silicon Steel Plate for Motor Direction Detection
An asymmetrical silicon steel plate creates distinct magnetic field patterns to resolve rotation direction misjudgment under weak magnetic fields.
- Braking Chopper Circuit for DC Link Voltage Control
A braking chopper circuit discharges DC link capacitors to manage energy feedback in adjustable speed drives.
- Phase Detector Circuit for Brushless DC Motor Rotor Position
An in-phase level adjustment circuit corrects mounting errors and signal distortions to improve measurement precision without increasing system complexity.
- Motor Current Control Circuit with Voltage Detection for Transistor Protection
A motor current controlling circuit uses a zero current detector to monitor node voltage and adjust transistor switching timing.
- Electric Power Steering Motor Detection Sleep Wake Cycle
Rotational quantity detection unit enters sleep state when main power supply is off and wakes on counter electromotive voltage trigger.
- Motor Stator Winding Without Bonding Layer
Removing the bonding layer from motor stator windings prevents gas generation while specific winding patterns maintain inductance balance.
- Motor Driving Apparatus PWM Control for Rapid Stopping
A motor driving apparatus uses a pulse width modulation table to gradually adjust duty cycles during operation.