Electric Motor Control TRIZ Cases

A sensor module detects failed Hall Effect sensors in electrical machines and outputs simulated signals from functioning units.

A motor control device determines abnormality repeatability and stores occurrence information to manage reset operations.

Semiconductor regulator integrates current mirror circuits to detect motor rotation lock states without external sensors.

Dual threshold values prevent control hunting by stabilizing output mode selection, ensuring consistent motor power supply during steering assist.

An exclusive limiting portion prevents processing of conflicting control commands acquired through non-real-time communication, ensuring stable motor operation.

Dynamic impedance adjustment limits current peaks and reduces mechanical stress while maintaining high-speed performance in single-phase motors.

Capacitive networks detect winding temperature via frequency converter voltage steps, eliminating complex external sensor circuits.

A steering control unit restricts d-axis current during field-weakening to maintain driver feedback quality.

Classify stator winding faults by analyzing positive and negative sequence harmonics to distinguish them from load unbalance conditions.

An anomaly detector calculates q-axis voltage command differences to identify permanent magnet temperature faults in electric motors.

A sensorless electric drive limits external speed commands and drops current signals to prevent mechanical damage.

Motor control apparatus calculates compensation amounts from battery electrical parameters to modify control signals.

Microprocessor monitors buffer feedback signals to detect faults and enable specific motor modes, reducing FIT rates below 10 per billion device-hours.

An adapter kit replaces disposable batteries with rechargeable units and adds a microprocessor-based motor control circuit.

Torque plausibility estimator selects reliable signals from dual channels to maintain steering assistance when one channel fails.

Control unit segments switching elements to preserve braking torque and recharge smoothing capacitors when electric parameters exceed thresholds.

An angle estimating section detects motor regenerative current to maintain steering assist control.

A load control device calculates current by subtracting a standby offset value from differential amplifier output during drive states.

A controller delays fan trip signals by tracking error counts against current thresholds to maintain inverter operation.

A hybrid pulse width modulation method switches between continuous and discontinuous modes to optimize variable speed drive performance.

Auxiliary circuit applies reverse voltage to suppress free-wheeling current, reducing heat generation and improving efficiency.

Variable frequency drive controls electric motor speed to reduce vibrations and noise in hydraulic fracturing operations.

Alternating switching controls distribute electric current evenly among inverter elements.

Segmented braking cycles reduce component stress by limiting peak current during rapid hand tool deceleration.

Inverter frequency modulation creates beat noise during acceleration, resolving the trade-off between engaging driving feel and steady-state quietness.

Intermediary counter generator compares clock counts against reference values to detect missed PWM updates that cause motor instability.

Processor injects HFI compensation pulse into current regulator to settle high frequency injection current.

Controlled phase switching creates balanced generator faults to prevent high amplitude torque oscillations during unbalanced short circuits.

A permanent magnet synchronous motor controller determines rotor position by measuring coil current gradients during voltage vector application.

Synchronous sampling of summed phase currents detects motor stalls without back EMF, resolving reliability and complexity trade-offs in sensorless drives.

Dynamic PWM switching maintains control performance in unmeasurable inverter areas by adjusting patterns based on the voltage command vector.

Inductor core dissipates braking energy via hysteresis and eddy currents, reducing resistor weight and volume.

Axial flux electrical machine with dual rotatable flux generating assemblies and a speed controller that modifies magnetic fields to regulate rotational speed.

A motor management relay monitors power quantity envelopes to detect initial rotation onset using electromagnetic signature analysis.

Asymmetric lower switch desaturation protection allows fast earth fault detection, avoiding slow isolated current sensors and reducing hardware costs.

A servo controller derives chronological state data to dynamically adjust velocity and position gains.

A detection unit measures time intervals of position signal phase changes to identify drive circuit faults in motor systems.

Control circuit detects voltage state mismatches via ADC feedback to trigger safe mode transitions and prevent operational hazards.

A motor controller switch circuit decouples the low-power supply from the DC bus during standby mode.

Dynamic sampling parameter adjustment distinguishes noise from valid signals, preventing misjudgment and maintaining stable fan operation.

A driving system uses Fourier series expansion to isolate the electrical first variation component of smoothing capacitor voltage for precise inverter control.

Independent phase winding circuits drive each motor phase via dedicated H-bridge inverters to eliminate inter-phase current flow.

FFT analysis and averaging smooth power spectrums to extract sideband frequencies, resolving detection difficulties caused by load torque variations.

Adjusting PWM pulse widths controls motor speed to improve airflow and reduce mechanical stress during partition movement.

Pulse-width modulated current signals convert to pulsed pressure outputs, eliminating continuous air bleed and reducing operational costs.

Control circuit bypasses current sensor delays by switching modes and opening a relay to stop the motor after a collision.

A control module reduces alternator-starter torque when inverter voltage drops below a threshold.

A control device adjusts coil voltage based on estimated and actual rotation speeds to maintain continuous motor operation.

WLAN modules replace manual adjustment procedures by enabling remote parameter configuration, reducing operational downtime and complexity.

Injects auxiliary power via the neutral point of three-phase lines to energize remote subsea controls without interfering with main loads.