Torque Ripple Control TRIZ Cases

Integrated ferrite rails and Hall-effect leakage sensing help a high-voltage converter suppress EMI while protecting reliable aircraft power delivery.

Intermittent on-off control keeps an electric machine near its efficient operating point under varying load while duty cycle sets average torque.

Filtered tilt-position feedback damps rotor oscillations in a bearingless motor, improving stable suspension near disturbances and critical speeds.

Dual-loop feedback uses synchronization error and spring-based force sensing to keep multiple motors aligned under accurate force control.

Composite current waveforms counter reluctance and magnet torque fluctuations, reducing vibration and stop angle error in two-phase synchronous motors.

Periodic torque modulation synchronized with gear tooth stiffness cuts tonal meshing noise in electric drive trains without added hardware.

By increasing field current while shifting stator current to a field-weakening phase, this case cuts drive voltage without sacrificing high-speed torque.

Adaptive PWM shifts a three-phase inverter into overmodulation when torque demand rises, using DPWM to limit switching losses and thermal stress.

Cross-corrected torque commands balance dual coil groups under thermal limits, reducing steering torque ripple and driver discomfort.

Three Hall elements spaced 120° derive cleaner orthogonal leakage-flux signals, reducing rotation angle error and noise from distorted SIN waves.

Magnetic rotor probes and PWM voltage-phase control improve high-power BLDC thermoregulation, commutation timing, and torque at high speed.

Bi-stable torque control and sinusoidal zero-velocity mapping reduce torque ripple in direct-drive brushless DC motors for sub-degree pointing.

Two synchronized MPUs independently drive stator windings to limit inverter interference, preserve current sensing, and keep steering torque smooth.

A modified trapezoidal controller switches commutation by speed to cut BLDC torque ripple, noise, and vibration with simpler control.

A moving average of output voltage smooths magnetic flux in AC rotating machines, cutting torque ripple and striking current.

Variable disturbance observer tuning matches antiresonance behavior to suppress torque ripple vibrations across changing motor speeds.

Back-EMF zero-crossing detection tracks BLDC shaft and panel position without sensors, cutting cost and complexity while supporting anti-pinch control.

Current vector phase is shifted toward the advanced magnetic pole at higher winding currents to cut torque ripple and suppress stator saturation.

Intermittent high-output and off-state motor control keeps electric machines near efficient operating points under varying load conditions.