Electric Motor Control TRIZ Cases

Switched resistor sensing reduces power loss and measurement errors to enable reliable motor stall diagnosis across multiple door actuators.

A motor control device adjusts target rotation speed using distinct acceleration and deceleration regions to stabilize wiper arm movement.

A rotation speed detection circuit generates digital data signals from period pulses to enable stable lead angle control in motor drivers.

A control unit manages inverter duty cycles to extend switching element lifespan.

A motor control system estimates rotor temperature using current and ambient sensors to manage thermal limits.

Brake control device compensates for actuator inertia using time-series patterns, reducing overshoot and improving responsiveness.

Signal bar with sensors displays runner position and segment status to reduce maintenance difficulty in linear drives.

Merging command functions into one circuit reduces device complexity, while a watchdog timer ensures reliability if the primary circuit fails.

Control system generates heat in electromechanical actuator motor windings to prevent lubricant viscosity increase at low temperatures.

Filtering units remove input and output noise from Hall element signals, enabling accurate defect detection in noisy environments.

Hardware comparators instantly cut field coil current to prevent back electromotive force damage when software control is lost.

Input EMI filter with active rectifier reduces motor drive size by shifting common mode filtering to the input section, lowering weight and switching losses.

Comparing hardware and software decoder outputs ensures reliable rotor position acquisition despite system complexity.

A drive current detection device samples load current to identify the active conduction period for accurate fault analysis.

Segmenting rotor windings into superconducting and normal conductive parts reduces heat load while maintaining high specific power.

A power drive circuit for an MV switching device incorporates sensing means to monitor branch currents and terminal voltages.

Replacing force sensors with inertial measurement units, the system resolves complexity and cost trade-offs while maintaining accurate push detection.

A monitoring circuit measures ripple voltage across DC link capacitors to detect integrity faults in electric power-assisted steering systems.

Integrating airborne acoustic and magnetic field sensors into a portable unit resolves the trade-off between measurement flexibility and device complexity.

Selective motor controller connections reduce component weight while maintaining reliability through universal drive architecture.

A determination unit evaluates rotational speed and phase current values to detect driving abnormalities in motors driven by multiple motor driving devices.

A relay operating method uses high voltage to burn off oxide layers on silver tin oxide contacts.

A control method modifies machine field excitation based on calculated torque derivative to maintain stable operation.

A control device measures generator speed to adjust output power and maintain stable operation.

Segmented redundant control units detect abnormalities and adjust motor drive commands to maintain reliability without increasing device complexity.

An electric drive device adjusts current limits to maintain motor torque during inverter faults.

Calculates lost temperature increment after system restart by subtracting ECU resistance from power pack resistance to prevent overheating.

A control device extracts position estimation currents using a DC component of high-frequency current amplitudes to estimate rotor position.

A motor controller switches current to a backup drive circuit when the main circuit fails.

Voltage detection monitors battery levels and adjusts FET switching duty cycles to prevent overcurrent damage while maintaining motor operation speed.

Closed-loop feedback adjusts IGBT duty cycle to limit starting current, preventing battery overload and cable damage.

A permanent magnet synchronous motor uses a q-axis current-based proportional integral controller to maintain constant torque operation.

A back electromotive force observer estimates rotor speed and voltage values in sensorless permanent magnet synchronous motor control loops.

Hardware logic manages PWM duty cycle changes to reduce microcontroller load and prevent communication interface bottlenecks during current edge control.

A detecting apparatus measures current phase angle differences to identify AC motor malfunctions with high sensitivity.

Counting consecutive same-sign sampling data points identifies zero crossings without low-pass filter delay, improving rotor position calibration accuracy.

A motor control circuit uses serial communication to reduce external terminal count while managing multiple motors.

A sensorless motor driving apparatus injects a high-frequency phase current to estimate rotor position without physical sensors.

A controller compares generator diagnostic values against expected operating thresholds to detect rotating diode malfunctions.

A magnetic braking unit combines permanent magnet and generator modes to arrest vehicle parts.

Applying high-frequency voltage along the flux axis aligns current amplitude with instructions, suppressing load-induced vibration errors.

A method determines state variables using current space vectors to minimize error accumulation.

A device calculates the third phase current from two shunt resistor signals to detect inverter output phase loss events.

A regenerative current limiting module computes motor current limits to protect voltage sources in DC machine systems.

Flux observer estimates rotor flux angle error to correct torque control, reducing high-speed torque errors caused by slip calculation inaccuracies.

A clamping device detects workpiece contact via electric motor current to define precise clamping force.

A power conversion device adjusts switching density across inverter phases to manage heat generation.

A motor drive control apparatus fixes rotation speed during booster circuit transitions to maintain stable DC bus voltage.

A submerged cleaning device measures drive motor torque to detect load changes and reverses direction when thresholds are exceeded.

Load sensors provide real-time feedback to balance actuator forces, preventing erratic movement from uneven weight distribution.