Vector Control Systems TRIZ Cases
- Multi-Phase Machine Leakage Inductance Estimation Using VSD Control
A two-stage VSD current analysis estimates multi-phase machine leakage inductance accurately during commissioning without extra test equipment.
- Brushless DC Motor FOC Using Hall-Sector Rotor Angle Estimation
Stepwise Hall-sector rotor angle estimation improves BLDC startup torque under heavy load, then shifts to PLL-based FOC at higher speed.
- Motor Current Coordination for EV Torque and Battery Self-Heating
Coordinated N-line and phase-current control lets EVs boost motor torque or increase battery self-heating while limiting EMI.
- Image Forming Motor Control for Phase-Aligned Transfer Contact
Switching from constant current to vector control by rotor phase and speed cuts power use while keeping transfer members aligned for accurate imaging.
- Sensorless BLDC Motor Control Using High-Frequency Signal Injection
High-frequency injection through motor windings replaces Hall sensors for rotor position detection, cutting BLDC power tool cost and control complexity.
- Brushless Power Tool Motor Control With Single-Current-Sensor FOC
A single bus current sensor plus Hall signals enables field-oriented control in brushless power tools, cutting shunts while improving torque and speed control.
- Electric Motor Current Oscillation for In-Drive Heat Generation
Oscillating d- and q-axis currents lets an electric motor generate heat during driving while holding reference torque and reducing extra heaters.
- PM Motor Voltage Control for ESP Cable Drop and Load Variation
Load-angle-based voltage adjustment helps ESP permanent magnet motors handle cable drops and varying loads with stable, efficient operation.
- Electric Motor Heating Control at Vehicle Standstill
By decoupling the motor from the drivetrain and controlling stator current, vehicle heating works efficiently at standstill without separate heaters.
- Vehicle Driveline With Variable Regeneration for Endurance Braking
Variable-regeneration electric machines turn surplus braking energy into electricity or heat, enabling endurance braking without bulky brake resistors.
- Multi-Motor Surgical Tool Actuator for Cable Resistance Control
Coordinated torque assist from multiple motors helps surgical tool actuators overcome twisted cable resistance while maintaining precise motion control.
- Brushless Motor Pole Detection Using Current Direction and Rotor Rotation
Current orientation and rotor rotation direction identify brushless motor poles faster, avoiding bidirectional coil energizing and cutting power use.
- Motor Current Control Using Reinforcement Learning to Cut Overshoot
A reinforcement learning current controller cuts motor overshoot, tuning time, and speed and current tracking errors.
- Actuator Bandwidth Control for Variable Load Torque
Real-time gain adjustment from estimated load torque, speed, and position cuts excess power use while preserving actuator response.