Torque Ripple Control TRIZ Cases

Circuit protector compares driving and inductor differential voltages against reference values to rapidly detect overcurrents without complex structures.

An asymmetric pole BLDC motor with sine wave drive reduces cogging torque and noise for higher efficiency.

Controller drives inverter legs to generate alternating current, heating the battery via internal resistance and eliminating separate heater complexity.

A control system generates ramped voltage commands to manage permanent magnet machine transitions.

A motor control unit extracts higher harmonic components from back-EMFs using Taylor expansion to correct q-axis current command gain and phase.

A rotary electric machine control apparatus estimates power supply relay and choke coil temperatures to calculate dynamic current limiting values.

A dual inverter driving device uses distinct switching frequencies to manage current conduction in rotating electric machines.

A control unit determines rotor period deviations to adjust electric motor speed for stable vehicle pump operation.

A motor control device detects runaway states by comparing torque command differentials against motor jerk signs.

A variable frequency drive generates a harmonic mitigation signal to reduce electrical distortion in motor systems.

A compensation amount calculator generates a signal to stabilize multiple-winding motor drive control.

An auxiliary inductor applies corrective magnetic flux to a DC link inductor to dampen sub-synchronous torsional interactions and torque imbalances.

Applying negative gate-source voltage to EPS inverter switching elements suppresses damping currents, eliminating the need for additional blocking components.

Harmonic cancellation controller modifies inverter signals to reduce stator vibrations and acoustic noise emissions by up to 10 dB.

A semiconductor device synchronizes multiple microcontroller counters using a parent-child trigger signal mechanism.

Control arithmetic unit calculates correction signals for angle detector sine and cosine signal errors caused by disturbance magnetic flux components.

Multi lane permanent magnet synchronous motors generate controlled radial forces through independent current demand signals applied to unbalanced phases.

Variable switching frequency adapts to rotor position, reducing current ripple without increasing power losses from higher average frequencies.

A PWM motor noise remover uses a microcomputer to transmit frequencies avoiding radio interference.

Secondary loop applies null voltage vectors to limit transient over currents, reducing torque ripples and mechanical vibrations.

A motor drive control apparatus adjusts square wave voltage phase to maximize torque output.

A harmonic controller calculates voltage commands using transfer function characteristics to reduce steady state deviations in rotating electrical machines.

A power converter controller calculates variable switch periods to shift neutral point voltages above and below a center value.

Variable current controller gains adapt to motor temperature changes, reducing current ripple and vibration that degrade eco vehicle performance.

A motor control apparatus adjusts PWM signal timings to minimize angle and current command value variations.

Parallel converters in an integrated motor drive reduce ripple voltage and insulation stress while maintaining power delivery.

A motor control device corrects detected phase currents using back-EMF and duty values to align with average current.

A control device periodically changes sinusoidal current phase based on rotor position to reduce torque pulsation in rotary electric machines.

A brushless DC motor controller detects PWM signal amplitude and polarity to synthesize drive signals for precise actuator positioning.

A pre-drive controller synchronizes internal oscillators using an external clock reference to align pulse-width modulated switching signals.

A controller manipulates motor current control angles to reduce torque ripple in permanent magnet synchronous motors.

A motor drive controller adjusts phase differences between normal winding currents to offset AC power imbalances during operation.

A motor control system adjusts current thresholds based on diagnostic results to limit torque output.

A motor control circuit adjusts drive signal phase using zero current detection to align winding currents with rotational positions.

A motor control device adjusts torque ripple compensation values based on carrier frequency and rotation state to maintain effective PWM signal driving.

A motor drive device calculates one phase current and estimates remaining phases using peak values and motor angle.

A pulsed electric machine control system uses lookup tables to define pulse frequency and duty cycle based on vehicle speed and torque requests.

A motor driving circuit uses an adaptive transition voltage mechanism to control DC motor operation via Hall sensor feedback.

A current control device adjusts d-phase commands using voltage ratios to maintain stable field weakening in synchronous motors.

A control module synchronizes inverter switching signals to reduce parasitic voltage harmonics.

Integrated position sensor eliminates complex zero angle alignment by generating test signals internally for direct motor controller feedback.

A periodic disturbance observer estimates torque ripple frequency components to generate compensating currents that cancel periodic disturbances.

A control system manages voltage phase to restrain output torque fluctuations in AC electric motors.

A damping control unit sets an upper limit on torque to stabilize the voltage command waveform.

A motor control unit determines duty ratio command values to regulate sliding door velocity using switching elements.

Control unit compares and updates offset values from current sensors to eliminate DC distortion during electric motor operation.

A feedforward computation unit calculates a torque target value using a vehicle model to control motor output.

A control device estimates rotor position using neutral point potential for three-phase synchronous motors.

Spherical air gap indentations reduce cogging torque and noise excitations without compromising power density.

Circuit selects phase advance relationships from storage to adapt motor drive signals across different rotational speeds and applications.