Single Motor Speed/Torque Control TRIZ Cases

A microprocessor calculates real-time rotor position using a single hall sensor and back-EMF signals to drive three-phase windings.

An asymmetrical silicon steel plate creates distinct magnetic field patterns to resolve rotation direction misjudgment under weak magnetic fields.

A braking chopper circuit discharges DC link capacitors to manage energy feedback in adjustable speed drives.

An in-phase level adjustment circuit corrects mounting errors and signal distortions to improve measurement precision without increasing system complexity.

A motor current controlling circuit uses a zero current detector to monitor node voltage and adjust transistor switching timing.

Rotational quantity detection unit enters sleep state when main power supply is off and wakes on counter electromotive voltage trigger.

Removing the bonding layer from motor stator windings prevents gas generation while specific winding patterns maintain inductance balance.

A motor driving apparatus uses a pulse width modulation table to gradually adjust duty cycles during operation.

A multi-chip power module separates ultra-high voltage drivers onto a dedicated die to control external transistors.

A level shift circuit with a preset threshold voltage detects motor induced voltage signals directly from inverter output terminals.

Eight-switch BLDC controller segments magnetic field rotation into finer intervals, increasing average torque without altering peak torque or machine size.

A machine learning drive apparatus corrects analog voltage interpretation errors by observing external commands and motor states to adjust control signals.

Wired remote sends signals to electronic circuit on printed circuit board, replacing mechanical pull chains to simplify user interaction.

Segmented sense amplifier isolates selection transistors from signal path to eliminate measurement resistance errors in disk drive spindle motors.

A motor drive device samples current at voltage rise timing to eliminate noise interference.

Switching AD converter sampling timings between PWM on and off periods based on duty cycle improves zero-crossing detection accuracy without adding hardware.

A brushless motor control device detects phase voltage zero-cross points to estimate rotor position without external sensors.

A shift range control device switches between feedback and stationary phase energization to manage motor angle.

Controller raises converter voltage above boost limit to switch from rectangular wave to sinusoidal PWM, restricting high-frequency noise.

A brushless DC motor controller switches between motion-based and time-based commutation modes to manage rotor position feedback.

Advance angle control simplifies ECM motor management by removing complex vector calculations, reducing hardware costs while extending operational speed range.

A fan control circuit uses a single pin to generate speed and direction signals via signal conversion and processing units.

An electronic tensioner system eliminates mechanical backlash in short drop window regulators by using feedback algorithms to compensate for cable slack.

A trans inductor uses a powdery Hiflux core to reduce peak current flowing in an inverter power module.

An automatic advance angle controller for brushless linear DC motors generates phase current timing using anti-windup outputs and voltage headroom.

A synchronous motor drive system detects open phase induced voltage to determine rotor position without physical sensors.

Voltage pulses measure phase winding inductance ratios to determine rotor position at low speeds, avoiding torque ripples from Hall sensors.

A motor control system uses transient state detection to predict speed transitions and manage low side switch timing.

A motor driving circuit uses a duty cycle command detector to generate a forced disable signal for the lower bridge switch.

A motor protect-control device adjusts driving levels to maintain a stable duty cycle and frequency above 25 kHz.

A control circuit adjusts auxiliary power supply discharge duty based on drive voltage command values to manage energy usage.

A ceiling fan switch module uses forward and reverse diodes to rectify input current into distinct sine wave patterns for speed control.

A motor driver uses an energy storage medium to power a position module during PWM OFF periods, maintaining rotor tracking.

Limited voltage gradients during commutation reduce noise and torque ripples while enabling sensorless rotor position detection.

A motor driving device detects voltage zero crossing points to determine coil current phase for precise control.

A single timer in the microcomputer multiplies rotation pulse signals, reducing system costs by avoiding high-speed processor requirements.

Injecting direct current opposite to magnetic flux weakens the field, reducing counter-EMF to achieve high speed ratios without gearboxes.

A clamp control circuit manages current flow in motor drivers by diverting discharge energy away from decoupling capacitors.

A BLDC motor controller adjusts pulse widths via a comparator circuit to regulate phase current during startup sequences.

A safety circuit uses a single triac and two series Zener diodes to short-circuit the motor winding.

A stepping motor control device detects out-of-step conditions and reverses rotation to alleviate internal stress before spontaneous movement occurs.

A single phase motor drive circuit uses a counter unit and energization pattern generation to create PWM signals for efficient motor operation.

A motor control apparatus estimates rotor position by sampling induced voltage during current zero periods.

A controller estimates rotor position using voltage and current sensors to enable sensorless motor control.

A motor control unit adjusts driving signal potential difference based on rotary shaft stay periods to ensure stable rotation across varying loads.

Analog demodulators replace digital processing to reduce certification complexity while rejecting electromagnetic disturbances.

A motor control interface circuit uses a normalizing circuit with a clamping device to limit DC voltage signals at the tap.

Peak hold circuits capture voltage peaks to reduce rotation fluctuations and maintain torque in brushless motor driving systems.

A motor drive control device detects cross-timing between drive current voltage and reference values to adjust phase.

An initialization circuit discharges the capacitor upon power transition to prevent overcurrent during fan motor startup.