Dynamo-Electric Converter Control TRIZ Cases

Rotor-speed feedback switches between one-phase and two-phase excitation to keep a stepping motor stable under load changes and high speed.

Added coaxial permanent magnets turn DC motor cogging into door-holding torque, reducing checker weight and wear while resisting external forces.

A capacitor-based recirculating discharge circuit cuts stepper motor coil discharge time and reuses stored energy to raise operating speed.

Interlocking servo control lets forming tools, pitch tools, and the cored bar be adjusted independently for faster, more precise spring setup.

PWM duty-cycle monitoring detects stepper motor stalls without Hall sensors, cutting driver complexity while protecting against overload damage.

Selective servo interlocking lets the cored bar and pitch tool be adjusted independently, cutting setup effort in spring forming.

Measures stepper motor load from PWM voltage-current phase shift using switch resistance drops, avoiding sensors, shunts, and ADCs.

RFID-controlled tool or battery activation blocks motor power until checkout validation, reducing theft and checkout burden.

An absorbing element inside the combiner cavity isolates transmission-line inputs, limiting fault propagation and supporting heat dissipation.

Circuit arrangement detects stepper motor load angle using back EMF voltage to regulate coil current.

A stepping motor control device gradually adjusts excitation currents during the hold period to ensure smooth transitions between operational states.

A stepping motor driving device applies voltage to coils in distinct phases to reduce peak current consumption.

Processor controls upper and lower bridge elements to reduce output voltage, eliminating the need for a separate DC booster circuit.

A shock detection circuit measures induced voltages across motor terminals using a pre-charged capacitor and selection transistors.

A sine digital-to-analog converter with R-2R networks eliminates current mismatch errors that degrade positional control resolution in stepper motors.

A speed monitoring circuit counts chopper pulses during active time frames to measure motor velocity.

High-frequency bus voltage controllers iterate adjustment signals to stabilize DC-link voltage, reducing capacitor weight in mobile power systems.

A controlling circuit adjusts stepper motor holding current based on accelerometer data to maintain camera position.

A stepping motor controller switches coil energization timing based on segmented sensor detection to set multiple advance angles without delay time.

Voltage detection triggers variable pulse width selection for stepping motor reverse rotation, resolving step-out errors caused by power source fluctuations.

A garbage container lid uses a sensor and motor to lift the cover.

A drive circuit uses a pulse transformer to transmit polarity signals for switching a driving switch.

Analog current multipliers synthesize sine waves from linear DAC outputs to reduce silicon surface area.

A stepping motor control circuit shifts detection sections to select drive pulses matching actual rotation states.

Identifies short circuit origins in H-bridge systems without moving the inductive load by analyzing current patterns during normal switching cycles.

Segmented high capacity and output cell groups balance energy storage and current delivery, extending battery lifespan.

Continuous magnetic field sensing detects operating anomalies and enables shortest path calculation by eliminating mechanical stop delays.

Feed-forward voltage control compensates for back-electromotive force fluctuations, maintaining stable phase current and preventing motor stall.

A motor control circuit uses lower and upper limit detectors to manage drive signal polarity switching in electronic timepieces.

A detection pulse change factor system adjusts signal width to control electromagnetic brake strength for precise rotor rotation measurement.

A stepping motor control circuit applies specific drive pulses to rotate the rotor at varying angles.

A stepper motor control circuit scales target coil currents using scaling factors to enable rapid current adjustment without measuring actual instantaneous values.

Dynamic current adjustment reduces energy consumption and self-heating in polyphase actuators by scaling voltage amplitude according to real-time load.

A stepping motor switches non-driven coils to high impedance states during operation.

Adaptive blanking period control adjusts the sensing window proportionally to the current set-point for precise stepper motor operation.

A motor control device adjusts current supply phase switching frequency based on rotor rotation speed to manage thermal output.

A step motor detection circuit in an electronic watch adjusts driving intervals to optimize pulse selection.

Segmented transmission lines lower power thresholds while maintaining insertion loss and bandwidth.

A vehicle window control device uses a load detector to monitor closing force and stops drive power before mechanical impact occurs.

Dual driving circuits manage polarity information to prevent hand indication misalignment during fast-forward mode switching.

Segmenting the power supply into a detachable battery unit allows convenient recharging without disassembling the container body.

Comparing measured back EMF signals to reference voltages detects step loss conditions, enabling stator field repositioning without adding external sensors.

Calculates phase angle between voltage and current to estimate load torque, resolving low-speed precision issues in sensorless motor control.

Sequentially short-circuiting phase connections based on rotor position reduces braking time and current load without mechanical devices.

One-two phase excitation shifts harmonic resonance peaks beyond the audible range, reducing uncomfortable noise in printer drive systems.

A stepper motor driver regulates average coil current using an averager circuit and comparator to maintain precise rotational positioning.

A stepping motor control apparatus combines speed and acceleration index values to manage driver operations.