Electric Motor Control TRIZ Cases

A control device sets allowable modulation factors and switching pattern commands to manage current variation in power storage devices.

Database-driven selection system computes main and control power source capacities to resolve manual evaluation complexity.

A three-phase rotating machine controller reduces phase current peak by superimposing optimized fifth and seventh order harmonic components.

A multi-motor aircraft propulsion system detects electric motor abnormalities by comparing estimated propeller torque against individual motor torque outputs.

Dual servo loops regulate wheel speed and acceleration to generate precise torque commands, resolving ground speed control precision issues.

Drive controller manages switching elements to reduce phase-to-phase impedance during abnormal energization events.

A motor driving device uses a floor sheet member along the fan motor withdrawal route to catch contaminants during replacement.

A 24-pulse autotransformer system reduces total harmonic distortion through specific winding turn ratios.

A motor controller applies short current pulses to position an EC motor rotor at energetically favorable angles.

A controller calculates sum and difference signals from two current sensors to detect malfunctions in multi-phase machines.

A shift range control apparatus calculates a motor angle and sets a target rotation angle based on an output shaft signal.

A motor control device adjusts proportional gain and integral corner frequency based on current speed to stabilize rotation.

A distribution apparatus manages regenerative power from electric actuators using a storage battery and relay device.

Monitoring shunt resistor voltage detects weak shorts in inverter transistors, enabling precise mitigation of steering torque assistance failures.

A pulse shift protection method calculates optimal execution instants to detect phase-to-phase short circuits in electric motor drives.

A control system dynamically adjusts motor current to handle transient loads without exceeding thermal limits.

A drive system manages power distribution between energy storage units with different voltages using a voltage transformer.

A drive system evaluates motor currents through shared measuring resistors to enable thermal monitoring.

A motor control apparatus determines power failure presence using current loop saturation states during regenerative operations.

Electromagnetic levitation replaces spindle bearings, reducing unsprung mass and frictional losses in lubricant-supported electric motors.

A servo-to-edge feedback mechanism controls motor rotation direction using a proximity sensor to detect target regions.

A compensated actuator system uses a switch to break power connections during command measurement.

A fan unit controller maps out-of-range PWM signals to data outputs on tachometric lines for two-way communication.

A position control device for electric motors uses a disturbance observer to estimate torque disturbances.

A resolver alignment method calculates installation deviation using back electromotive force phase angles and rotor rotation data.

Pinion meshes with driven gear to power wheels, reducing fuel use and brake wear.

A motor diagnosis device detects sideband frequencies in current spectra to identify bearing degradation.

Load variation compensation units adjust motor speed based on oil pressure feedback, reducing response time and power consumption during sharp load changes.

Floating DC bus voltage captures regenerated energy to double power capacity while eliminating heat loss from braking resistors.

Dual voltage monitoring segments total and partial inhibition signals to maintain alternator mode operation during undervoltage events.

A machine tool control unit switches to emergency power and resumes machining automatically after detecting power failure.

A controller adjusts IPM motor operating points based on detected DC bus voltage levels.

A voice coil motor calculates magnetic coil resistance from voltage drops to estimate temperature and adjust drive signals.

Phase short circuit control isolates faulty low-voltage-side switches to block regeneration current and prevent overheating.

A control circuit detects the operating switch position by monitoring the input voltage gradient after motor shutdown.

Dynamic threshold adjustment resolves the contradiction between high detection sensitivity and false alarm rates in vehicle motor systems.

A wiper control device uses switching elements to generate test voltages for microcomputer analysis of motor terminal states.

A fan arrangement adjusts blade pitch to operate at maximum permissible motor power.

A motor drive circuit detects insulation resistance using inverter switch states.

A control device integrates voltage and temperature servo loops to regulate excitation current in motor vehicle alternators.

A wearable sensor detects hand motion to activate assistive driving force, reducing upper limb strain and avoiding complex force sensors.

Segmented guidance applies one-sided tracks for low complexity and two-sided tracks at switches to maintain vehicle stability during transitions.

A control device calculates an angle estimation value using response information and an interference coefficient derived from past values.

A fault detection system generates a DC voltage signal from gate drive differences to identify dormant switch faults.

A control unit adjusts the pre-commutation angle of an electrically commutated machine to align the magnetic field with the rotor.

A motor braking system uses a controller and switching network to manage energy flow between the drive and storage.

Low power diodes clamp control signals to protect isolation circuit transistors from voltage spikes.

A control circuit switches inverter conduction phases to maintain drive current flow when switching elements fail.

An inverter controller uses error maps to correct coolant temperature readings, reducing pump energy while preventing overheating.