DC Motor Speed/Torque Control TRIZ Cases

A digital filter attenuates amplitude in a frequency band including the resonance frequency of an actuator within a voice coil motor drive circuit.

Sharing velocity integrator outputs prevents torque imbalance while gradual preload application suppresses gear backlash without mechanical shocks.

A vehicle acceleration control apparatus adjusts feedback torque based on input reliability to maintain precise drive performance.

A control unit determines rotational speed from current gradients during zero-voltage intervals in brush-commutated motors.

A dispensing device maintains constant material velocity by dynamically adjusting voltage and pulse length based on real-time current feedback.

A drive signal changing circuit restricts motor current when exceeding a threshold to manage fan rotational speed.

A positioning work stop with a signaling means that activates upon contact to indicate proper placement.

A controller calculates total power consumption by integrating motor torque, rotation speed, and amplifier losses without external wattmeters.

Replacing brushed motors with brushless units eliminates cogging torque while regenerative braking recovers energy for safe operation.

Merging planetary gear units reduces power unit size and cost, preventing capacitor overcharge and optimizing energy distribution.

A photovoltaic generator provides short circuit current and no-load voltage readings to control dynamic system configurations.

A control device uses an encoder, linear sensor, and mark sensor to detect movement distance and absolute position for precise stopping.

A motor driving method adjusts coil voltage output based on sensed magnetic pole variations to maintain stable operation.

Controller toggles between standard and high park positions using existing hardware, reducing winter ice build-up without increasing system complexity.

A variable gain controller adjusts integrator settings based on error signal magnitude to optimize mover positioning accuracy.

A DC/DC converter control device detects voltage sensor failures by monitoring high-voltage-side and low-voltage-side voltages.

A reverse drive control system inhibits the electric motor when the engine is off or battery voltage drops below a threshold.

A motor control unit detects current flow and interrupts the path when exceeding a threshold to protect permanent magnets.

Aligning the compressor operating frequency with its calculated mechanical resonance frequency reduces energy transformation losses caused by load variations.

A control system shifts current phase to maximize torque using magnetic pole position correction.

Oppositely wound reactor pairs in a transformer unit equalize current across parallel LED strands, resolving uneven brightness caused by voltage differences.

A motor control device switches excited motors to un-excited states based on detected physical quantities.

A control console reads tube set memory to regulate pump motor flow rates and execute automatic priming cycles.

Integrated shunt resistor design manages heat dissipation and vibration stability by distributing thermal expansion stress through area-contact welding.

An inductance encoder detects linear and rotary displacement with one coil set, replacing bulky optical sensors to reduce device complexity.

A back EMF sensor circuit measures voltage order across motor phases during off-time to determine commutation sequence.

Adaptive pulse timing stabilizes rotor speed against external shocks, ensuring accurate timekeeping while minimizing device complexity.

A model train communication protocol expands the Lionel command set via a checksum error nibble to enable bi-directional signaling.

Segmenting the winding via a switching arrangement reduces inductive capacity, enabling high speed power delivery while maintaining low speed torque.

A wiper control device uses a direct driving switch to bypass the MCU and manually position wipers.

A management apparatus converts back-electromotive force into power supply voltage using variable duty cycle switching circuits.

A shift range switching apparatus corrects rotor angle deviations using mechanical backlash in the actuator.

A control unit estimates motor terminal voltage to correct offset errors in current detection circuits.

A hydraulic power supply uses a permanent magnet motor to adjust pump speed for dynamic tool demands.

Alternating magnetization creates stable guidance while multiple sensors detect position accurately despite material discrepancies.

Segmenting power sources isolates electronic noise during pole commutation, resolving the trade-off between controllable speed range and device complexity.

Encoder merges fan status signals to enable dynamic speed adjustment that reduces acoustic noise while maintaining component temperature control.

A motor control device estimates resonance frequencies using a vibration-damping-control setting unit and feedforward control to suppress residual vibrations.

A hybrid square root calculation method combines Dijkstra and Newton algorithms to process electrical quantities in electric motor control systems.

A rotation control apparatus detects motor position using current measurement across coil paths.

A motor control device automatically adjusts feedback and feedforward gains to stabilize operation.

A motor controller adjusts electrical current to mitigate power supply output level increases during active operation.

Segmented electrode switch isolates center and ground contacts to block unintended signal generation during vehicle window operation.

Offsetting two rotor torque waveforms reduces ripple and radial forces in switched reluctance machines.

A servomotor control circuit autonomously detects rotation position changes to stop the motor without main unit commands.

A communication device controls power application to NFC circuits using received transmission information.

A linear actuator position estimation method uses magneto-resistive sensor signals to generate square and saw-tooth waves for rapid calculation.

Extrapolated torque commands correct non-linear voltage errors to increase peak torque by 5%.