Electric Motor Control TRIZ Cases
- Motor Driving Circuit PWM Duty Cycle Control for Thermal Management
A motor driving circuit adjusts pulse width modulation duty cycles to manage bridge arm temperatures and reduce switching power loss.
- Vehicle Motor Control Device for Accurate Entrapment Detection
Motor control device differentiates frictional resistance from entrapment using dynamic thresholds across acceleration, constant speed, and deceleration phases.
- Inverter Safety via Independent High and Low Side Power Segmentation
Independent high and low side power sources enable autonomous switch short-circuiting to prevent sudden vehicle braking during inverter malfunctions.
- Motor Control Circuit with Segmented Determination for Speed Responsiveness
A motor control circuit uses a dedicated determination circuit to detect malfunctions independently from the main control unit.
- Semiconductor Substrate Electromagnetic Shielding for Vibrator Devices
A bonded semiconductor substrate and lid form an airtight cavity around the quartz crystal element to provide electromagnetic shielding.
- Rotary Electric Machine Control Using Output-Based Conversion Map
A rotary electric machine control method uses an output-based conversion map to calculate electric control amounts from rotation speed and DC voltage.
- Explosion-proof Battery Container Isolation
Segmenting the battery into a dedicated explosion-proof container prevents gas ignition damage while maintaining device safety.
- Motor Control Device Carrier Wave Frequency Adjustment for Vibration Suppression
A motor control device adjusts carrier wave frequency to change phase difference between voltage command and carrier wave.
- Synchronous Generator Exciter Controller for Motor Synchronization
A controller synchronizes a synchronous generator with load-driving motors by adjusting exciter field current and prime mover speed.
- Motor Temperature Sensor with Conductive Vias for Head-Mountable Devices
Thermally conductive vias in a flex circuit move heat from a motor case to an outer surface sensor, resolving accuracy and complexity trade-offs.
- SCR Feed Device Fault Detection Using Response Signal Thresholds
A feed device detects response signal levels to identify operational faults in SCR systems without adding hardware.
- Multi-Winding Motor Control for Torque Ripple Reduction
A control apparatus detects winding currents to calculate phase offsets and compensation currents for abnormal windings.
- Blower Register Current Control via Resistor Segmentation
A blower register subdivides current flow paths using segmented resistors and bypass switches to increase rotation speed levels.
- Electric Power Steering Capacitor Discharge via Motor Relay
A drive control portion maintains a motor relay in an on-state to discharge capacitor charge through the brushless motor windings.
- Drive Control Assembly Bypass Module for Motor Maintenance
A drive control assembly bypass module switches motor power between a variable frequency drive and an independent path.
- Sensorless PMSM Angle Estimation Using Clarke Park Transforms
Simplified angle estimation modules replace expensive DSPs to reduce system complexity while maintaining precise rotor position sensing.
- Servo Motor Controller Disturbance Gain Adjustment Under Current Limit
Adjusts estimated disturbance gain in response to limited current output for servo motor control.
- Power Conversion Device Automatic Parameter Setting
A control unit reads identification signals from a terminal unit to set motor drive parameters automatically.
- Electric Parking Brake Fault Warning via Armature Current Analysis
A fault warning method estimates braking force and motor speed from armature current variations to determine electric parking brake status.