Electronic Commutation Motor Control TRIZ Cases

Segmented stator and rotor design reduces machine bulk while maintaining power output and minimizing network harmonic interference.

Digital back electromotive force sampling estimates rotor position and speed, reducing resynchronization time in brushless DC motor control systems.

A controller perturbs an electric motor rotor via pulse width modulation commands to detect the angular offset between a position sensor and the actual rotor axis.

A current regulator system transforms feedback signals into fundamental and harmonic reference frames to process waveforms independently.

A motor control apparatus updates target rotation angles using encoder feedback to compensate for transmission backlash.

A parallel DC link current control loop operates independently from motor control loops to accelerate dynamic response in current source converters.

Replacing planetary gears with independent motors reduces installation space and eliminates lubrication issues.

An apparatus estimates rotor resistance via magnetic flux models to monitor temperature changes, maintaining torque control under thermal variation.

A drive circuit selects a target permanent magnet motor to generate complex command voltage vectors for synchronized parallel operation.

A method determines rotor position by converting space vector components into a linear system with complex-valued variables for closed-loop control.

A stepping motor driving circuit sets initial current to a maximum value then reduces it via feedback control.

An LED driver uses a low-pass filter and AC detector to eliminate flicker from spurious pulses without reducing power factor or increasing harmonic distortion.

Integrates a wiring path for lead wires within an insulating wall to reduce bottom surface area while maintaining dust resistance.

A vector controller calculates virtual inductance from q-axis current to estimate axis errors for permanent magnet motor control.

A motor drive control device uses a monitor circuit to detect operational abnormalities in the drive control system.

State observer estimates rotor resistance from d-q axis currents to maintain vector control accuracy despite temperature-induced parameter variations.

A range switching device uses open-loop control to rotate a motor toward a target position in small steps.

A permanent magnet synchronous motor control device calculates current commands based on voltage usage states to optimize high-voltage power converter output.

A switched reluctance machine stator uses permanent magnets on common poles alongside wound excitation poles to enhance torque production.

Software correction units shift the single-revolution reference signal without hardware dependency, resolving complexity and productivity trade-offs.

An overcurrent fuse integrates into a brushless DC motor control circuit to measure current flow via voltage drop.

A drive regulator generates pre-control values to adjust electric machine operating variables without feedback delays.

A DC-AC power converter applies Fourier analysis to calculate current harmonics and adds a compensation strategy into its control loop.

A feedforward current control method determines voltage commands using estimated motor parameters and rotor position signals.

A motor controller switches H-bridge modes to manage flyback pulses and return coil current.

A learning unit adjusts motor flux based on torque demand, reducing core and winding losses without compromising dynamic performance.

Removing local feedback loops from the transconductance current loop eliminates amplifier poles that restrict bandwidth in hard disk drive voice coil motors.

An inverter control method adjusts the current space vector phase angle to distribute switching load evenly across power semiconductor devices.

A single inverter controls multiple permanent magnet motors using a controller that adjusts driving voltage based on rotating speed and location.

Continuous saturation controllers replace hysteresis thresholds to minimize torque and stator flux ripples at low sampling frequencies.

A motor control device adjusts command current vector direction based on phase difference between estimated and actual d-axis.

A motor driving apparatus recovers regenerative power during deceleration by storing energy in a power storage device.

A motor inverter adjusts voltage to maintain magnetic flux while varying speed.

A PMSM motor controller switches between speed and power constant modes to regulate motor operation.

Segmented algorithms improve torque determination accuracy across varying speeds while reducing control software complexity.

A constant-current driver charges and discharges a semiconductor switching element control terminal to vary the switching speed.

A separately excited synchronous machine operates as a reluctance motor when field coils de-energize.

Lyapunov-based nonlinear control stabilizes micro-grid inverters, ensuring accurate power transmission despite poor grid voltage quality.

A sensorless control method estimates rotor flux angular position and electrical synchronous frequency using back electromotive force values.

A controller device estimates flux vectors from measured voltage and current to define precise semiconductor switch timing instants.

Computing overall back electromotive force from winding voltages adjusts commutation phase and period, reducing torque ripple and noise without adding sensors.

A torque-to-current mapping module selects lookup tables based on DC voltage and angular speed to generate current commands via polynomial functions.

A motor control device monitors excitation and torque current voltage differences alongside velocity changes to identify demagnetization events.

A variable speed drive adjusts rotor resistance and inductance values using integral current loop deviations to refine motor control voltages.

A stator flux controller generates pulse signals using dead-beat control behavior to manage asynchronous machine operation.

A motor drive device fixes two phases to an on-term to enable continuous back electromotive voltage detection.

A drive control device rotates current vectors into a second coordinate system to simplify subharmonic correction.

A motor control system detects voltage saturation using a processing unit to notify the host controller.