Electric Motor Control TRIZ Cases

Multiple controllers acquire detection signals and determine identical calculation values to maintain consistent motor drive during partial sensor faults.

Motor control unit detects inverter faults by switching upper and lower arm states to compare phase currents against defined thresholds.

A variable frequency drive controller evaluates switching devices and sensors to detect faults before motor startup.

Dual microcomputer steering control systems use distinct manufacturing origins to prevent synchronized failures.

A motor control device uses an inverter selector to route PWM signals to multiple inverter units based on operational status.

A current detection apparatus uses segmented correction resistors to generate candidate voltages for real-time load monitoring.

An adaptive observer calculates estimated inertial load values from motor output commands and actual outputs to stabilize control systems.

A control device calculates estimated resistance values by adding a correction value to a basic estimate derived from external temperature.

A servo motor controller adjusts speed gain and torque offset via a lookup table based on driven member position.

A dual motor control system uses a switching circuit to seamlessly transfer operation from a failed unit to a standby controller.

Opposing impeller arrangement balances axial thrust to prevent shaft instability while maintaining high lift capacity.

Storing peak temperature at motor stoppage preserves accurate thermal data after power loss while reducing write frequency to extend non-volatile memory life.

A synchronous machine starting device computes induction voltage from estimated rotor position and current signals to stabilize the start-up process.

A motor control apparatus includes a counter electromotive force protection circuit with rectifier and short-circuit units to manage energy.

A start control apparatus adjusts motor current to the alternator winding based on piston position for reliable engine ignition.

Synchronous rectification alternator detects faults in power transistors and supplies information to the voltage regulator.

Dynamic torque limiting based on temperature sensors prevents overheating in electric steering motors while maintaining operational flexibility.

Downhole electric motors use thermistor data and current-derived torque to detect oil viscosity changes and bearing wear, enabling proactive maintenance.

AC load dump dissipates generator power during grid faults to protect converters.

A noise suppression unit reduces steering torque signal interference using dual filter processing.

Adjustable control modes modify motor assistance thresholds to lower energy usage while maintaining propulsion support when rider effort increases.

Dynamic voltage boosting improves actuator positioning precision while reducing power losses in electrical positioning drivers.

A system controller limits motor performance when temperature sensors detect heat buildup in electric drive components.

A wind turbine generator switch gear disconnects the power supply unit from the utility grid to prevent voltage application during low temperature conditions.

Anti-serially arranged field-effect transistors enable direction-dependent damping control, increasing door wing closing time from 20 seconds to 3 minutes.

A power conversion apparatus calculates input power from voltage and current sensors to perform droop control on the inverter circuit output.

A motor starter apparatus detects excessive current rates during start-up using high-speed sensors to identify faults before damage occurs.

A control apparatus calculates allowable output values based on battery and wiring temperatures to manage thermal conditions.

Dynamic phase switching reduces armature reaction and enables field weakening, maintaining stable torque output during heavy load commutation delays.

A temperature estimating device applies a thermal conductivity coefficient to sensor readings for accurate motor winding measurement.

A PWM modulation circuit manages brake current flow in three-phase motor drivers by selectively switching transistors.

A motor drive controller switches locking energization patterns to distribute lock current across different coils.

A semiconductor switch isolates coil windings at the star point connection to prevent circulating currents.

An alternator lockout circuit prevents full field energization during cold starts, reducing mechanical energy drainage and shortening engine crank time.

A control system measures neutral point voltage to estimate rotor position in AC motors.

A controller reconfigures inverter switches to short circuit coil windings upon detecting faults.

A hybrid vehicle motor controller calculates an orientation correction factor using voltage and angular speed signals to align the permanent magnet rotor.

A power supply control device manages inter-system lines using a controller that executes confirmation and estimation processes based on voltage changes.

A motor control apparatus inverts voltage polarity to suppress booster circuit resonance.

Regenerative braking converts motor inertia into electricity for non-volatile memory writes, resolving data loss risks when main power cuts out.

A controller distributes switching losses evenly across half-bridge elements in brushless motor drivers.

Derating output current prevents filter inductor overheating from harmonic stress while maintaining boost mode functionality.

An idle running determiner detects motor shaft rotation within play ranges, while a current limiter suppresses collision sounds by constraining power delivery.

A dynamic control strategy manages voltage clamping in active converters connected to electrical machines.

A collision stress releasing device reversely rotates a feed motor to minimize residual damage after machine tool impact.

A sunroof control system estimates motor torque change rate to detect physical obstructions during closure.

A motor output controller monitors dual winding signals to maintain stable steering performance during electrical faults.

Frequency modulation spreads spectral energy across a broader range to lower peak emissions and mitigate costly filtering requirements.