Electronic Commutation Motor Control TRIZ Cases

A drive controller measures electrical characteristics to identify connected electric motors and load pre-defined running parameters.

Ferromagnetic elements embedded in the stator magnetically couple rotor fields to surface-mount Hall Effect sensors on a common circuit board.

Merging phase currents at a neutral point reduces detector count, resolving the trade-off between device weight and measurement precision.

A frequency converter determines alternating voltage properties using internal resistive circuits for synchronization.

A motor control device identifies d-axis currents using offset voltage and superimposed AC signals to determine motor constants.

A driving circuit controller adjusts reference space vectors to match predetermined positions within holding regions for high-amplitude output.

Motor windings act as passive load for DC bus discharge, eliminating dedicated resistive circuits and reducing system size.

A control apparatus corrects magnetic flux estimates using pre-stored error data indexed by operating parameters.

A rotary electric motor controller adjusts voltage commands using feedforward and feedback terms to regulate primary magnetic flux.

Voting algorithm filters inactive sensor data to resolve measurement precision versus device complexity contradictions in aircraft rotation monitoring.

A control system modulates PWM switching frequencies based on in-cabin acoustic measurements to reduce audible noise emissions.

A three-phase voltage command value deriving unit adjusts neutral point potential amplitude to maintain a sufficient variation range.

Segmented inverter modules with phase-shifted gate signals maintain sinusoidal magnetic flux during partial failures.

A boosting rectifier and feeder motor drive circuit produces regulated DC supply voltage from variable AC line inputs.

A sensorless induction motor control method estimates mechanical parameters using stator voltage and current measurements.

Hybrid fuzzy-adaptive PID control optimizes energy extraction efficiency while preventing converter saturation under dynamic wind conditions.

A servomotor control method uses predefined voltage space vector characteristic diagrams to regulate actuator operation.

Adjusting magnetic pole positions minimizes detection angle errors between main and sub-Hall ICs, ensuring quadruple precision rotor position detection.

A digital control module updates actuator constants via a pre-calculated sinusoidal table to estimate disturbance frequencies.

Standstill signal injection extracts asynchronous motor parameters without mechanical loading, eliminating overload risks during identification.

A PWM inverter controller calculates and compensates pulse counts to synchronize switching signals during high-speed operation.

Positive and negative sequence controllers compensate unbalanced stator winding impedance, reducing machine losses and acoustic noise.

A rotating electrical drive device uses electrically isolated part-windings connected to separate inverter phase modules for independent operation.

Comparative control voltage adds to torque portion voltage to prevent over-current hunting and motor damage during resonance frequency operation.

An overvoltage protection circuit masks control signals at adjacent external terminals to prevent transistor breakdown.

A power conversion device pairs IGBTs and MOSFETs in parallel arms to optimize switching characteristics.

Dynamic dead time adjustment monitors freewheeling diode voltage drops to prevent short circuits and minimize conduction losses in power converters.

Dual resistance discharge units distribute regenerative energy load to prevent overheating and maintain discharge capacity.

A normalization algorithm scales stator winding phase measurements to generate symmetrical waveforms for balanced motor control.

A stepping motor driving circuit switches a full bridge to an inverse state before coil current reaches zero.

Integrating the DC link capacitor with blocking diodes eliminates external batteries, reducing system weight while maintaining self-excitation.

Space vector pulse width modulator adjusts PWM intervals based on voltage sector position to enable accurate current measurement.

Feedback control adjusts q-axis current based on measured torque to eliminate pulsating torque caused by d-axis magnetization changes.

Lookup tables replace real-time optimization to lower calculation burden while maintaining high modulation accuracy and motor efficiency.

Dynamic voltage command correction maintains line voltages above thresholds, preventing detection failures in high-speed motor control.

A brushless DC motor circuit board integrates a rewritable memory and external writing terminal port for flexible control program updates.

A control device adjusts electric current phases to minimize input power in a motor driving system.

An active vibration noise control system replaces complex wheel sensors with inverse electromotive force data from the EPS motor to reduce vehicle cabin noise.

A fan driving circuit adjusts rotational speed using pulse frequency modulation and feedback signals.

A motor drive servo adjuster stores command response and stiffness indicators to automatically tune position and speed controllers.

A sensorless brushless motor control method determines rotor position using neutral point voltage measurements.

A motor drive control device adjusts an exciting current pattern using real-time detection to match individual motor characteristics.

Logic circuits replace central processing chips to generate real-time rotational speed feedback, reducing execution time and production costs.

Direct duty cycle calculation eliminates classic control loops to resolve slow reaction speeds at low motor vehicle operating conditions.

A three-phase motor monitoring method measures two phase currents to generate error signals when values fall within defined zero-tolerance bands.

A concentric coupling secures a motor shaft without keyways to reduce vibration and wear.

A data processing unit generates a single PWM signal to coordinate H-bridge switching and control motor speed.

A power converter controller synthesizes a correction vector with voltage command vectors to adjust output times and maintain stable current detection.

Active rectifier control minimizes harmonic distortion and maintains unity power factor in drilling power generation systems.

Arithmetic units calculate estimated currents to perform decoupling control without inter-system communication.