Motor/Generator/Converter Stoppers TRIZ Cases

See how two-mode AC voltage control improves resonance frequency estimation at start-up by sequ

See how a mechanical relay cuts off inverter drive power or signal to ensure reliable actuator

See how load-adaptive braking positions an auxiliary drum inside a main drum to enable separate

See how motor current sensing detects clutch connection failure during agitation-spin switching

See how storing and selecting power maps based on input signals enables precise motor control a

Staged drum rotation with deceleration and hot air reduces noise and vibration while redistributing laundry for better moisture removal.

Motor speed adapts to battery pack data, balancing suction power, energy use, and battery protection in cordless cleaning.

A single control signal with motor-specific control curves lets multiple HVAC motors run at different or maximum speeds with less control complexity.

Speed-based PWM mode switching boosts switched reluctance motor torque while limiting transistor current and reducing leakage-flux braking torque.

Holding motor speed below the vibration point lets balancer balls settle first, cutting tub noise, wear, and balancer cost.

Fixed advance-time winding excitation maintains electric machine power across speed and voltage changes while avoiding complex timing calculations.

Low- and high-speed drum rotation keeps the heater covered while cutting extra wash water and water supply time in drum laundry cycles.

Reflected-light sensing detects slight furniture-part deformation during pinching, enabling low-cost motor stop or reversal and easy retrofitting.

Zero-cross detection adjusts drive frequency to the motor's eigen frequency, cutting rise time while maintaining driving force and stable haptic response.

Using voltage and current feedback, this case keeps vacuum suction steadier during battery discharge and avoids excess power under low airflow.

Regenerative braking and roller-screw control keep a radiation therapy patient support table lowering at constant speed, even during power loss.

A separate trim winding and high-resolution signal path cut cryocooler vibration without the distortion and limits of dual-motor feedback.

A dual-mode monitoring unit lets users customize powered furniture movement while blocking accidental setting changes and setup complexity.

Current phase control suppresses compressor speed fluctuation and vibration while maintaining power factor with smaller inductors or capacitors.

Ambient temperature feedback stops generator runtime when cooling is unnecessary, cutting fuel use while keeping frozen cargo at target temperature.

Multiple enclosure temperature sensors drive fan speed from the highest thermal error, cutting acoustic noise without risking overheating.

A learned maximum resistance and timed renewal logic keep intermittent wiper knob position detection accurate despite resistor tolerance and temperature shifts.

Regenerative braking and a roller screw keep a radiation therapy patient support moving at constant speed and braking safely during power loss.

A monitoring unit triggers a drive unit to stop drawers or doors at preset intermediate positions, reducing manual effort and improving flexibility.

A monitoring unit allows only one powered furniture part to move at a time, cutting setup effort and preventing collisions or trapping.

Opening and closing sequences let users pair inner and outer furniture parts accurately while simplifying setup and preventing collisions.

Electronic feedback and drive-assisted motion adjust furniture closing gaps precisely without tools, improving uniformity and tolerance compensation.

A spring-loaded clamping coupling lets powered furniture parts decouple for free manual movement, avoiding motor braking and speed limits.

A removable memory lets one HVAC controller identify installed blower motors and load matching parameters, reducing dedicated controller variants.

A logic circuit and internal power source let one crossing gate PCB switch brake relay behavior between entrance and exit modes without extra hardware.

An excitation signal with DC and AC current components estimates motor constants and friction changes in electromechanical brakes without extra sensors.

Pulse-controlled photocoupler STO circuits remove timing synchronization hardware, cutting cost while avoiding short circuits and misjudgments.

A digital isolator blocks high-side PWM signals to stop motor torque while simplifying SIL 3 monitoring and testing in inverter control.

By isolating high-side PWM paths during STO, this control approach prevents motor rotation and simplifies IEC 61508 SIL 3 testing.

Opposite-polarity current pulses detect rotor housing lock state despite temperature shifts and tolerances, helping prevent damage and injury.

One EV battery pack drives while the other stores regenerative energy, then they switch at a charge threshold to extend range and cut plug-in charging.

Group-tagged black channel data lets one control unit supervise multiple power devices, reducing hardware while preserving functional safety.

Group indicators in black channel data let one control unit supervise multiple power devices, reducing control-unit and communication complexity.

Segmented operation-amount change rates speed motor deceleration while limiting Back-EMF voltage rise that can destabilize the power supply.

A multi-state inverter braking sequence recirculates winding current to decelerate PMSM and BLDC motors quickly to lower speed without bus-voltage pump-back.

Independent phase-conductor switching opens the brake before motor startup, cutting winding heat and reducing locked-operation losses.

Adaptive power-state control matches motor current and speed to user inputs and attachments, extending electric utility vehicle runtime.

Parallel isolated STO channels block inverter drive signals faster, cutting torque-off delay and supporting varied module topologies.

Variable duty-cycle braking slows a hard disk voice coil motor faster using speed feedback, improving seek recovery and reducing crash-stop risk.

An externally charged battery and HV DC bus decouple the mixer drum drive from the truck drivetrain, reducing safety and monitoring complexity.

Peak-to-window motor current measurement sets clamping force faster while avoiding idle-running load fluctuation and complex calculations.

Freewheeling detection lets an ESC disable synchronous rectification at the right time, cutting loss, heat, and active braking.

A multi-state inverter braking sequence decelerates PMSM and BLDC motors quickly while limiting current surges and voltage fluctuations.

Selectable power states adjust motor current and speed by task and attachment to extend electric utility vehicle runtime and reduce battery drain.

A backup ECU with a supercapacitor reserve keeps brake motors operating when the primary ECU is inactive, improving power redundancy and stability.

A TVS diode and freewheeling diode inverter layout dissipates micro-blower braking energy while reducing thermal and electromagnetic stress.

A controlled SCR rectifier stores counter-EMF in a supercapacitor or lithium-ion capacitor, removing the braking unit while stabilizing DC output.

A controller calculates each gate’s travel time and adjusts motor speed so unequal gate paths still open or close together without continuous communication.

A predicted stop wait and pulse-voltage induced-current deviation check improve rotor stop detection while limiting inverter loss.

Normalized modulation from the maximum DC bus voltage balances cascaded inverter phases, limits overvoltage, and improves braking.

Delayed precharge and voltage-triggered discharge keep motor drive capacitors within safe limits and prevent damaging restart current spikes.

Real-time motor torque control matches user-specific muscle-tension curves, enabling safer asymmetric, eccentric, and isometric training.

A low-voltage disconnect triggers controlled shutdown of multiple battery systems, saving space and avoiding separate high-current switches.

Current commands are redistributed between dual three-phase winding sets to cut heat generation while preserving torque under unequal thermal margins.

A backup-powered safe torque off circuit shorts motor phases during battery disconnect, converting inertia to heat for controlled stopping.

Vector-controlled linear induction with supercapacitor storage replaces hydraulic breaker actuation for 50-75 ms switching and lower maintenance.

Switching-signal voltage checks expose monitor circuit faults and block motor drive when power or wiring abnormalities are detected.

Motor back-EMF triggers auxiliary elevator braking earlier after primary brake failure, reducing overspeed travel and crash risk.

Fiber optic components interface motor control circuitry with parallel drives, verifying shutdown circuitry without electrical stress on windings.

Control unit compensates for shorted semiconductor switches by neutralizing braking torque, ensuring smooth vehicle steering without increased effort.

A signal processing method extracts low-frequency components from induction machine currents to identify rotor anomalies with reduced computational overhead.