Electric Motor Control TRIZ Cases

A Zener diode and triac circuit monitors motor voltage to trigger protective current flow when speed exceeds safe limits.

A speed controller limits q-axis current via phase angle constraints to maintain motor stability.

A control device acquires cooling and running information to manage electric motor operation states during fan failures.

A neural network controller replaces PI regulators in induction motor current loops to enable optimal vector control.

A lubricant dispenser calculates plunger stroke via motor back-EMF voltage monitoring for precise grease dosing.

A motor driving apparatus selects optimal Y or open end winding modes via a controller to maximize torque output.

Determines stator resistance from induced voltage and current to detect overtemperature conditions in electric motors.

Diagnostic circuits monitor individual rectifier and inverter switching devices to detect component malfunctions within the motor drive power structure.

Regenerative braking control unit arrests high-lift motor motion via reverse torque commands, eliminating mechanical wear and ground test equipment.

A method for speed estimation uses equivalent line voltage zero-crossing points to generate a virtual Hall signal for three-phase brushless motors.

A machine learning apparatus observes motor state variables to dynamically adjust current feedback correction values.

A motor drive uses a charging resistor to discharge stored energy from the power storage unit.

A wind turbine yaw motor drive control apparatus uses a parallel contactor to maintain operation when the primary frequency converter fails.

A motor rotation angle detector with higher resolution feeds a controller that interpolates minimum braking force resolution.

A variable frequency drive adjusts switching frequency to manage thermal output before active cooling is established.

Shaft-torque-detection compensation filters resonance frequencies to stabilize speed control under high load inertia.

A power conversion device calculates the temperature difference between its inverter and cooling water to detect abnormal states accurately.

Dual processing circuits calculate independent operation amounts to manage motor drive signals.

An acoustic controller adjusts cooling fan operating speed based on real-time sound level analysis from embedded microphones.

A motor drive control apparatus limits fan rotation speed based on temperature readings to protect non-heat-generating components.

A control unit adjusts inverter output ratios to maintain total power during electric power steering operation.

A shift range control apparatus uses a three-phase encoder to maintain motor synchronization during signal faults.

A stator core sensor detects local temperature to calculate winding heat, resolving installation effort and measurement delay trade-offs.

A dual-rotor in-wheel motor uses electromagnetic clutches to switch between independent rotor modes.

A circuit board accommodates multiple source voltages using printed wires with adjusted spacing and component mounting configurations.

A motor control device generates an AC voltage waveform to drive inverter switches.

A BLDC inverter circuit distributes thermal load across switch groups during freewheeling phases to manage heat generation.

A temperature estimation device calculates chip heat using electric power loss data from multiple modules.

A junction temperature calculation method corrects conduction loss using modulation ratio coefficients.

Independent safety monitor determines torque model values from current sensors and switches off power electronics when critical levels are reached.

A cascode voltage regulator uses a series transistor to maintain safe output levels.

Back electromotive force detector estimates load angle to adjust driving voltage, preventing step-out while reducing energy loss from fixed margins.

An integrated circuit generates drive signals for rotating electric machines using rotation angle information from an angle sensor.

A motor demagnetization detection device estimates magnetic flux using steady-state current data to identify early signs of permanent magnet degradation.

A health monitoring device for permanent magnet electric machines processes search coil signals using a Hilbert band-pass analytic filter to extract diagnostic features.

A vehicle power converter control device manages B-terminal voltage to maintain stable electric power supply.

A vehicle window control device determines glass direction and speed using motor voltage signals when hall sensors fail.

Magnetic induction detects piston position to stop the motor, preventing stalling and eliminating mechanical protection structures.

A motor control unit uses a single reverse-connection protection-FET for dual-system inverters.

A motor driving device uses a friction compensator to generate torque commands based on variation codes.

A shift range switchover control device estimates motor temperature using a soak timer and non-volatile memory to store final temperature data during system stop.

Phase separation relays isolate faulty segments, maintaining torque and driving range.

Dynamic current and magnetic field adjustments regulate liquid metal flow in an electromagnetic pump, preventing blockages from cold spots caused by heat loss.

A motor end winding PCB integrates transient voltage suppression components directly onto heavy copper pads.

Motor control system limits battery current through iterative MTPA and MTPV calculations.

A fault detection device applies test voltages to a single current measuring unit and inverter circuit to identify component failures before operation.