Electric Motor Control TRIZ Cases
- Failure Detection in Electric Lifting Motor Contactors
Parallel detecting circuits output synchronized pulse signals to identify welding, fusing, and reverse phases in three-phase driving circuits.
- Motor Control Phase Delay Compensation
A phase compensating speed observer uses an optimal delay element model to output accurate speed feedback signals for motor control systems.
- Electric Motor Rotor Angle Determination via Signal Segmentation
A control unit processes rotor position signals to derive angular velocity and filter base signals for precise angle determination.
- Motor Current Sensing for Jam Detection in Print Engines
Comparing motor currents across intervals resolves false alarms caused by paper thickness or deterioration.
- AC/AC Exciter Fault Detection via Frequency Analysis
Analyzing rotor and stator signals at fs*(2-s) and fs*(1-2s) isolates exciter faults, solving the difficulty of detecting inter-turn shorts in AC/AC exciters.
- Sensorless Motor Drive Using Magnetic Flux Phase Estimation
A voltage controller sets drive voltage using orthogonal vector components derived from a phase estimator.
- Power Tool Overload Detection via Cumulative Motor Speed Analysis
An electronic processor monitors motor speed to determine a cumulative value for dynamic power interruption in power tools.
- Clutch Actuator Motor Safety Module for Controlled Engagement
Short circuiting motor coils dissipates kinetic energy, preventing rapid unintended engagement and preserving driver reaction time.
- Electric Power Steering Relay Current Control
Dynamic relay current limiting reduces torque variations and prevents overheating during prolonged steering wheel holding.
- Vehicle Noise Analysis via Dynamic Parameter Conversion
A vehicle running control section converts driving parameters into noise parameters for electromagnetic analysis.
- Motor Fitting Sensor System for Real-Time Work Information Management
A sensor set at a motor fitting transmits real-time work information to a processing module for immediate parameter analysis.
- Railroad Vehicle Control Device Low-Speed Malfunction Detection
A vehicle control device monitors PWM modulation rate and rotor frequency to identify inverter malfunctions.
- Phase Loss Detection via DC Bus Voltage Sensing
A sensing circuit monitors the power rectifier output voltage level to detect phase loss conditions in three-phase motor systems.
- DC/AC Converter Segmented Control Architecture
Segmented control blocks manage H-bridges via potential barriers, isolating faults to ensure safe vehicle propulsion during component failures.
- AC Motor Control Apparatus for Stable Sensorless Restart
A voltage clamp controller corrects d-axis current commands to maintain AC voltage amplitude within inverter output limits during startup.
- Prognostic Power Drive Unit for Cargo Handling
A prognostic power drive unit integrates motor, environmental, and load sensors with a controller to determine health status.
- N-Phase Short Circuit Protection for Permanent Magnet Generators
A protection circuit connects all n conductors to create a full n-phase short circuit upon fault detection.
- Electric Working Machine Motor Stop Control
A controller maintains a first current path while interrupting a second path to circulate loop current through motor windings.
- Power Converter Control Circuit Failure Mode Determination
A control circuit uses a failure mode determiner to forcibly shut down a power converter switch independently of the switching command.
- AC Motor Driving System with Semi-Sinusoidal DC Voltage
A three-phase rectifier and step-up circuit generate a semi-sinusoidal DC voltage for AC motor driving.
- Servo Motor Controller Abnormality Detection
A servo motor controller detects magnetic pole position discrepancies before absolute position establishment.