Torque Ripple Control TRIZ Cases

A brushless motor controller adjusts drive current based on real-time load detection to maintain stable operation.

A decoupled control device separates disturbance compensation from target value setting in electric machine regulation.

Angular offsetting of drive elements shifts noise phase angles to cancel cumulative sound emissions in integrated motor gearbox units.

A brushless DC motor commutation scheme extrapolates position between discrete sensor signals to drive sinusoidal current waveforms.

A single-phase brushless motor employs a modulating unit to smoothly reverse rotor rotation direction.

A motor drive control device estimates permanent magnet temperature using 0-axis current calculations to adjust phase currents.

An analog mixer processes sine and cosine waveforms from magnetic detectors, eliminating digital calculation delays at high rotational speeds.

A drive controller calculates electrical imbalance between phases and adds compensation values to current control values outside the q-axis.

A motor control unit generates adjustable PWM signals to manage overlap energization and minimize torque variation.

Dynamic switching frequency adjustment reduces high-frequency leakage currents and acoustic noise while managing thermal conditions.

A power inverter provides boost converter functionality using machine windings and switches.

A control device superimposes user-adjustable high-frequency voltage onto driving signals to estimate rotational position in synchronous machines.

Direct current energization positions the rotor to minimize torque ripple and enable reliable start-up under high driving loads.

A brushless motor control apparatus generates non-axisymmetric PWM signals to gradually change coil energization.

A vibration sensor detects motor acceleration to trigger a control element that reduces rotational speed.

A tri-state voltage advance mechanism manages switching frequency updates in motor drive systems using double-buffered parameter transfers.

Segmented commutation intervals with distinct torque thresholds suppress ripple in four-phase switched reluctance motors.

A power converter controller shifts neutral point voltages to reduce torque ripple and vibration in electric motor drives.

Adjusting phase differences between independent coil groups suppresses torque ripple caused by simultaneous excitation, improving steering comfort.

Dynamic motor speed modulation reduces pressure fluctuations and noise without adding passive damping components.

Detects offset errors in phase current measurements using programmable high pass filtering and gain compensation modules for motor control systems.

A control apparatus dynamically adjusts DC motor phase switching timing based on real-time coil current detection values.

A motor driving apparatus computes power spectrum of position error to update current sensor offset correction amounts.

A rotary electric machine control apparatus calculates a final torque command value by adding a vibration torque component to a basic torque command.

A vector control system estimates inverter dead time loss voltages from motor terminal measurements to generate automatic compensation values.

State variable estimator removes torque ripples to calculate reaction torque without current sensors, reducing manufacturing costs.

Independent stator winding groups arranged at 120-degree pitches reduce torque ripple during single-inverter operation to prevent heat generation imbalance.

Segmented master and slave control units reduce heat generation by eliminating independent microcomputer arbitration inconsistencies.

Adjusting the PWM voltage slew rate reduces mechanical vibrations and acoustic noise in BLDC fan motors without compromising efficiency at higher speeds.

A control device segments current feedback into sum and difference loops to manage alternating currents in rotating machines.

A PWM controller selects sequences to adjust carrier frequency and common mode voltage.