Electric Motor Control TRIZ Cases

Consolidating distributed controllers into a single unit reduces system complexity while enabling simultaneous motor adjustment via universal signal interfaces.

Dynamic speed adjustment reduces peak load and electricity costs while maintaining production efficiency through real-time power monitoring.

A motor controller saves accumulated thermal values and time stamps to non-volatile memory before power loss.

A control method manages inverter switching to prevent electromagnetic energy flow into power converters.

Calculates rotor position from star point potential changes during switching states, eliminating the need for internal electrical variable access.

A resistor-capacitor snubber connected across negative potential sides replaces expensive Zener diodes to reduce wiring inductance and manufacturing costs.

Zero-crossing timing reduces arcing during motor restarts, extending switching device lifespan while maintaining power management capability.

A sensorless control system for permanent magnet synchronous machines employs a hybrid observer gain to estimate counter electromotive force and rotor speed.

A vehicle controller calculates circuit resistance from motor output signals to detect corrosion and ground faults without additional sensors.

Two-channel STO redundancy with diagnosis module prevents accidents by detecting malfunction signals.

A control circuit generates specific switching signals to measure phase voltages and identify motor winding disconnections using a lookup table.

A motor control device detects replacement via communication disconnection and reconnection states.

A motor control unit calculates regenerative energy to manage semiconductor switching states.

A motor control apparatus estimates phase current sensor temperatures to compensate detection values without dedicated sensors for every phase.

A load driver uses a prohibition switch to prevent simultaneous relay closure.

A bidirectional interface circuit uses a charge pump to generate a negative bias voltage, eliminating the need for complex bipolar power supplies.

A power supply current control device calculates dynamic limit values using voltage and current feedback.

A synchronous motor control method injects a binary carrier signal into the stator voltage to separate fundamental and high-frequency current components for position tracking.

A brushless direct current motor controller switches between pulse-width modulation and centerline commutation modes based on rotor speed.

A running board assembly controller monitors motor current levels to permit temporary overcurrent during deployment.

A voltage monitor circuit detects control voltage levels in an isolator driver to generate fault indications.

Active electrical braking mechanisms halt treadmill belt motion using electromagnetic forces, preventing freewheeling at high inclines where friction fails.

A controller determines initial rotor position using current feedback from multiple power supply modes.

A servomotor control device adjusts integral and proportional gains based on inertia ratios to drive the motor.

A motor driving device enters a lock protection mode when rotation speed exceeds a threshold to prevent overheating.

Counterweights balance the off-center mass of a rotating display, eliminating vibration-induced flicker for stable 3D images.

A machine learning device estimates virtual temperatures using heat generation and dissipation coefficients to calculate thermal displacement.

Parallel controllers maintain fan operation when a single unit fails, resolving reliability complexity trade-offs.

A control device dynamically selects between PWM and rectangular wave drive signals for a synchronous electric motor based on detected rotation speed.

A roll sheet conveying apparatus adjusts motor driving torque based on estimated moment of inertia to maintain constant tension during printing.

Variable angle DC injection resolves asymmetrical phase resistance, overcoming the limitation of classical methods that yield only equivalent average values.

A numerical control device estimates heat radiation characteristics from electrical and thermal data.

A synchronous motor drive circuit uses a Hall effect sensor and TRIAC to constrain rotor rotation direction.

Phase shifting two electric motors cancels natural oscillations in the drive shaft, preventing resonance damage without extra damping components.

A sensorless control method for AC synchronous machines transitions between open-loop and closed-loop modes based on rotor speed thresholds.

Dual control modules reduce cabling weight by placing regulation near the generator while verifying outputs remotely for fault detection.

A motor module determines identification information through voltage detection at its connection unit.

Snubber circuit diverts motor winding energy away from switching means to prevent avalanche breakdown and excessive power dissipation.

A Hall sensor signal delay correction method calculates offset angles and delay times using zero current control to stabilize motor speed.

A resolver drive signal generation apparatus uses pulse width modulation to produce an ideal sine waveform synchronized with incoming square wave signals.

A programming device selects pre-installed inverter code modules to execute applications.

A power converter estimates current sensor temperature using coolant data to restrict switching element load.

Calculates angular deviation between shaft and control angles to identify error states, reducing computational demands during low-speed operation.

A motor control device calculates rotation position correction values using measured current command data during constant velocity operation.

Neutral voltage phase angle comparison determines ground fault direction, resolving sensitivity issues in high-impedance grounded generator protection systems.

A detection module separate from the fan assembly detects voltage induced in a motor coil to control operation.

Adaptive thresholds adjust to operating modes, preventing demagnetization and excessive torque without increasing control system complexity.

A motor control device adjusts voltage and current values based on necessary power to drive the motor efficiently.

Forming a band-gap temperature sensor and a magnetic sensor on one substrate reduces system size and cost while maintaining reliable motor control.