Electronic Commutation Motor Control TRIZ Cases

An error unit divides the d-axis response by estimated back electromotive force to measure misalignment, reducing controller complexity.

Dynamic gain estimation stabilizes error dynamics and improves speed tracking accuracy by eliminating voltage model integration errors.

A vehicle stability control system adjusts q-axis current using stator flux-oriented control to maintain peak torque performance in electric motors.

Dynamic motor control adjusts torque and exciting current components based on clutch state, reducing power consumption while preventing stalling.

Inject current vectors at specific frequencies to determine induced stator flux voltages for rotor position estimation.

A motor control device multiplies an initial driving signal by a cyclic signal synchronized with the motor shaft velocity to generate stable output.

Phase shift means adjust voltage and current angles in healthy phases to eliminate torque ripple.

A control method adjusts field-forming current in asynchronous machine inverters to reduce stator current peaks.

A power supply circuit converts alternating current from an electric motor into direct current to energize a vehicle controller.

A signal conditioning technique extracts rotor angle information from motor current feedback using high-frequency current injection and a phase-locked loop.

Vector tracking observers estimate rotor position from back-EMF currents, eliminating noise susceptibility in sensorless permanent magnet machine control.

A power conversion device detects induction motor connection failures using exciting current detection values.

A linear resonant actuator measures back electromotive force to detect contact type and pressure.

A control system derives inverter voltage and frequency commands from torque current feedback without speed sensors.

Estimating capacitor temperature via phase currents prevents excessive current limitation, maintaining motor performance in electric power steering systems.

Shorted windings limit braking current amplitude via reactance, eliminating heavy external resistors.

High-order vector transformation rotates voltage vectors to match current phase, resolving instability from phase differences in polyphase AC motor control.

Offline characterization generates control lookup tables for direct and quadrature axis currents, resolving suboptimal torque control across varying speeds.

A synchronous reluctance motor determines rotor position using injected test signals and measured current responses.

A controller estimates rotor position by correcting stator current components at specific energization angles.

Field-oriented control aligns stator and rotor fluxes to carry full rated current without torque, verifying circuits without actuating mechanical locks.

A torque demand limiter generates a limit signal to constrain motor current based on battery voltage and drive stage parameters.

Active rectifier controller reduces capacitor size and cost by minimizing ripple current through voltage-speed synchronization.

A controller calculates voltage deviation and modulation factor to determine AC motor control mode switches.

Un-faulted phases inject compensation current into short-circuited coils, maintaining operation during busbar open-circuit faults.

A motor control system applies short-circuiting pulses to windings and adjusts pulse duration based on measured current.

An electric machine drive system injects a carrier signal between constant flux and torque angles to enable self-sensing control.

A controller detects actuator abnormalities by comparing lock states across rotation directions.

Pulse-width modulation controls the motor duty cycle to maintain high power output while reducing noise levels below 65 decibels and minimizing heat generation.

Analog feedback output resolves digital interface constraints by enabling flexible bit resolution and bandwidth independent of microcontroller processing speed.

Alternating-current motor control apparatus adjusts phase angle via torque variation calculation to optimize operating points.

Offline optimization of pulse patterns and sampling times minimizes current harmonic content, resolving distortions at high modulation degrees.