Speed Controller TRIZ Cases

Extendable pins in a switch track route movers between paths without rotary switches or diverter arms, preserving throughput at high speed.

Sensor-driven trailer motors add propulsion and braking during towing to cut energy loss and help smaller vehicles handle heavier loads.

Wheel-speed comparison between driven and undriven wheels lets an e-bike cut motor assist early to prevent slip on hills and low-friction roads.

Hydraulic CVT control lets travel speed change while holding PTO speed, enabling reverse travel without a dedicated reversing mechanism.

Ultra-high power mode raises current and motor speed control to overcome water resistance and speed diver uplift near the surface.

Magnetic attraction clamps friction surfaces into the eddy-current brake, adding low-speed and parking torque without extra brake hardware.

A transit stopped state cuts unnecessary electromagnetic brake excitation, lowering motor load and power use while keeping braking reliable.

By disconnecting the motor from the wheels and idling to stir oil, this case raises lube oil temperature for smooth pump startup in extreme cold.

A transducer and adaptive model add a correction input to the motor command, canceling audible axle vibrations while preserving wheel power delivery.

Steering wheel grip detection limits EV mode switching to stable conditions, reducing unintended changes and driver response delay.

Precomputed motor setpoint speeds limit speed gradient and curvature during power-split shifts, cutting drag losses and hydraulic demand.

Route-based torque sharing across drive modules with different gear ratios cuts energy use and wear while preserving startability.

When the main traction motor fails, monitored switching lets a hybrid vehicle keep moving by using the starter-generator motor as backup drive.

A frame-integrated dual-motor and transmission layout fits electric drives into existing work machines with less reconfiguration and tight packaging.

By switching from acceleration to speed feedback at low speed, one-pedal EV control achieves smoother stops and stable stop-hold torque.

Cell voltage abnormalities are ranked by failure risk so vehicle drive control can limit charging and maintain fail-safe running.

Automatic braking reduces motor speed downhill until generator torque can counter acceleration torque, preventing overspeed and brake wear.

Independent control of four electric wheels enables tight turns, parking maneuvers, and traction recovery with less steering complexity and space.

A segmented pump-action and motor drive adds selectable propulsion while a collapsible frame improves storage and transport for therapy use.

Real-time voltage and current constraint calculation defines achievable PMSM torque, improving path planning and preventing motor stalling.

Wheel-slip detection and friction estimation let hub motors blend regenerative and passive braking for safer, more efficient e-bike deceleration.

Voltage-based inrush monitoring opens or re-closes the main contactor to prevent welds, arcs, and terminal melting in electrified vehicles.

A five-switch, two-inductor topology enables high-gain bidirectional DC conversion while reducing current ripple and circuit complexity.

Sensor-driven inverter switching frequency control cuts motor power loss in eVTOL aircraft, extending battery life and flight duration.

Using axle speeds outside the gauge converter as the inverter reference prevents wheel over-rotation while preserving train driving force.

A small non-zero motor torque heats battery coolant while removing drivetrain gap and avoiding vehicle jitters during cold-start heating.

Split motor control units use shared speed signals to compensate rotational interference and deliver precise left-right wheel torque.

Brake-release torque feedback enables stable low-speed creep in direct-drive electric vehicles, improving maneuverability without unstable speed rise.

Passing trains relay onboard data through routed inter-vehicle links, avoiding dedicated relay devices while improving transmission reliability.

One motor sensor is reused to estimate the paired motor temperature from relative operation, cutting sensor count while maintaining thermal control.

An integrated inverter and cooler layout uses one case opening to simplify assembly while keeping the vehicle drive unit compact.

Track-specific DC bus voltage lets independent cart segments match speed needs while cutting switching losses and radiated emissions.

Adaptive switching-frequency control tracks motor speed and torque to limit irritating converter noise while balancing losses and voltage ripple.

Motor encoder data and drivetrain models recover wheel speed at low vehicle speeds, improving sensing accuracy and sensor fault redundancy.

Charging levels are raised when route, weather, and planned battery use at the destination indicate a risk of EV SOC shortage.

Modular rectifier and inverter units let aircraft ground power systems be swapped quickly with plug connections, reducing maintenance time and downtime.

Inertial sensing automatically corrects independently driven wheel output on slopes, improving straight tracking and rollover resistance.

A notched stator support case lets the motor and differential sit closer together, cutting vehicle drive unit size and weight.

When ACC is requested, the motor controller shifts from shifter-limited manual mode to automatic control so cruise speed is not constrained.

Coordinates motor and transmission torque during EV shifts, adding second-motor assistance when limits are reached to maintain speed and driveline output.

Synchronized speed orders keep dual lift-truck drive wheels at consistent torque at low speed, reducing slip on slippery surfaces.

A comparator-driven selection circuit switches between external and internal supply paths to limit heat and prevent IC malfunctions under varying voltages.

Integrated motor, current, temperature, and battery monitoring gives riders clear warnings when electric balance bike faults occur.

When ACC is requested, motor control switches from shifter-limited manual mode to automatic mode so cruise speed is not constrained.

Dynamic switching between single- and dual-drive axle modes cuts energy use while preserving torque distribution across operating ranges.

Adaptive friction circle limiting smooths drive force on icy or snowy roads while preserving faster response on higher-friction surfaces.

A variable target slip range lets rail electrodynamic brakes adapt to changing wheel-rail contact, improving adhesion use and shortening braking distance.

EWMA-filtered current and battery learning improve runtime prediction beyond SOC alone, helping vehicles respond to battery aging and duty cycles.