Motor/Generator/Converter Stoppers TRIZ Cases

Motor control unit dynamically shifts the stop position target when overshoot is detected, reducing collision sound without feedback control.

A linear motor speed controller stores integral values to set initial conditions for immediate thrust force application.

A motor control apparatus detects power failure using AC voltage amplitude and initiates protection only when DC link voltage drops below a threshold.

A feedback control module adjusts duty cycle based on back electromotive force signals to regulate stator current in brushless DC motors.

A controller selects between space vector and discontinuous pulse width modulation based on measured current levels.

A self-tuning controller circuit measures motor parameters to enable stable sensorless operation.

A permanent magnet generator couples to a wound field synchronous machine rotor to enable sensorless position detection via carrier injection stimulation signals.

Determines rectified voltages of variable speed drive power cells through iterative activation sequences without additional sensors.

A dwell period separates switch engagements in a switched reluctance motor phase leg to control voltage transitions.

A multi-stage power module uses switches on both heat sink surfaces and edge-mounted capacitors to minimize parasitic inductance.

A motor driver integrated circuit generates back electromotive force indication signals to detect and remove power-supply voltage variations.

Parallel inverters isolate faulty branches and modify pulse-width modulation to maintain sinusoidal phase currents without overdimensioning power switches.

A capacitance sensor detects raindrops on a windshield to trigger automatic wiper activation.

Input-output linearization and extended state observer techniques determine motor operating parameters from current sensor data.

A BLDC motor control method adjusts PWM duty cycle based on Hall signal transitions to synchronize switching with rotor position.

Phase estimation aligns voltage with the δ-axis to stabilize control despite varying inductance values.

Segmented stator zones distribute thermal loading to prevent overheating and extend service life in linear motor transport systems.

Dual-path modulation detects instantaneous voltage or current variations to adjust motor speed and prevent inrush current damage.

A motor control circuit samples electrical rotation signals at specific angles to generate a mechanical rotation signal for precise speed and torque regulation.

A motor controller modulates AC power conduction angles to tailor output frequency and waveform for precise induction motor operation.

Auxiliary winding magnetically couples to drive circuit to supply independent braking torque, eliminating mechanical wear and controller dependency.

Switchable stator connections maintain starting torque at high vehicle speeds without exceeding power supply voltage limits.

A fan speed control device combines pulse width modulation with voltage regulation to manage rotation.

A driving apparatus synthesizes control signals using back electromotive force detection and forced synchronization for sensorless fan motors.

A motor drive device uses a power supply switcher to select voltage levels for internal regulators and spindle motors.

A feed-forward magnetizing-axis angular position emulator generates estimated stator frequency commands for sensorless induction motor drives.

Eliminating lead wires by directly coupling winding wires to motor protector contacts reduces connection complexity and manufacturing costs.

A back electromotive force detection unit monitors three-phase motor wiring to identify stop conditions without auxiliary switching hardware.

Inductance sensing determines rotor position at standstill, bypassing BEMF limitations for reliable startup.

An autowiper controller prevents unnecessary wiping by adjusting detection thresholds based on ambient and windshield temperatures.

Secondary exciter control starts the generator-motor below the speed limit, eliminating static starters and reducing equipment complexity.

An uninterruptible power supply device uses an auxiliary load unit to consume regenerative energy from the connected load.

A position detector uses mutual inductance changes between stator coils to determine mover location without communication wires.

A motorized roller shade system uses a microprocessor-controlled rotation detector to enable manual operation alongside motorized drive.

Comparing instantaneous and average back electromotive force voltages detects rotor position without Hall sensors, reducing system complexity.

A vehicle door latch driving device uses a neutral switch and gear detection switch to manage automatic closing operations.

A control apparatus determines alternator component temperatures using duty cycle and rotational speed data without extra sensors.

A predictive controller calculates optimal switching sequences to reduce semiconductor switching losses in rotating electrical machines.

A servo device uses a brushless motor with integrated circuits to drive the system and detect rotational speed via counter electromotive voltage.

A motor drive apparatus detects shorted DC link capacitors by comparing the DC link voltage against the peak AC power supply voltage.

A linear actuator controller applies alternating current to generate vibration and direct current to correct the amplitude center position.

A motor control circuit adjusts rotation speed based on temperature thresholds to conserve energy.

A single electric motor generates both rotational torque and axial force using a multi-phase stator coil arrangement.

A control device estimates rotor orientation using stator flux and current components in a synchronous reluctance motor.

A composite magnetic circuit uses permanent magnets to establish a bias field across large radial gaps in electromagnetic actuators.

A control device drives an axis past a target position in the antigravity direction before reversing to stop at the target.

A rotor-mounted power conversion device manages induction motor speed while suppressing harmonic distortion in the supply.

A motor driving circuit adjusts speed by controlling voltage between collector and base terminals using a determining unit.

A motor drive circuit uses variable duty ratios to initiate rotation of a single-phase motor coil.

Transcutaneous energy transmission with phototransistor arrays charges armature windings to eliminate fixed PWM delays and reduce start-up noise.