Speed Controller TRIZ Cases

Reverse pedal motion is converted into motor deceleration torque, removing coaster brake hardware while enabling regenerative charging.

Accelerator drop-rate sensing adjusts regenerative torque to match rider braking intent while preserving energy recovery and steering ease.

A safety controller stops motor-driver permission and control signals, enabling reliable trolley shutdown without bulky interruption circuits.

By reusing DC/DC half-bridge center taps to rectify inductive AC charging current, this traction network cuts parts, space, and cost.

Cancelling energy recovery during high-speed coasting cuts conversion losses, improves coasting comfort, and better matches driver intent.

Controlled wheel oscillations at non-resonant frequencies improve low-friction road detection while reducing occupant discomfort.

A switchable mechanical coupling lets one EV motor drive wheels or auxiliary units, cutting stationary power waste and extending range.

A cascaded inverter uses shared control and data lines to cut harmonics, reduce switching losses, and actively balance mixed DC sources.

Interchangeable powered wheel modules let one farm vehicle adapt track width, height, and terrain without multiple specialized tractors.

Two electric machines with different gear ratios help a self-powered dolly deliver torque from standstill to cruising while improving efficiency.

By connecting charger phases to DC/DC converter half-bridge center taps, the traction network enables inductive AC charging with fewer components.

Torque is capped from accelerator input and vehicle state to keep battery current within limits, protecting components while widening battery options.

A split, offset power converter case cuts height and width above the motor, freeing space for other devices and helping absorb collision loads.

Mission-based SOC scheduling balances energy transfer between coupled vehicles so both can complete coupled and uncoupled driving segments.

A main controller varies HST ratio and motor current from sensor inputs to keep the traction motor in a high-efficiency zone and cut heat.

Accelerator release rate is used to vary regenerative torque, improving energy recovery while keeping motorcycle braking feel closer to rider intent.

Switching between power running and regeneration control based on travel direction improves rider feel, controllability, and battery current management.

Separate secondary winding sections keep carriage control power stable while allowing higher load voltage to be adjusted or switched off as needed.

Torque is capped from accelerator input and vehicle state to keep battery current within limits, protecting components while widening battery options.

A shared inverter-rectifier uses motor phases and an inductive cell to charge the vehicle battery without extra converters, cutting weight, bulk, and cost.

Variable HST ratio control keeps an EV traction motor in its high-efficiency zone, cutting power loss, heat generation, and cooling demand.

User-selectable reduced and emergency modes shut off auxiliary loads and cap vessel speed to preserve battery reserve and extend range.

When a parking lock actuator sticks, the main motor reduces gear-lever pressure first to enable faster, more reliable release.

During high-load operation, the controller lets the engine settle below target speed and trims work-element load to preserve drive power.

Wheel vibration-based speed estimation improves slip calculation in dual-motor vehicles, enabling torque control that preserves acceleration.

Prediction signals narrow torque commands before wheel slip occurs, shortening re-adhesion time and reducing abrasion and ride disturbance.

Controlled sonority currents excite motor and transmission resonance to recreate engine-like sound and restore driver feedback in electric vehicles.

Scalable powertrain modules, adjustable seating, and regenerative braking help a youth EV adapt to growth while extending battery use.

By overlapping the inverter with the motor and output members, the layout nests the breather chamber to shrink drive unit size and improve mountability.

A tapered inner flow path and barrier improve coolant distribution, reducing pressure loss while keeping semiconductor switch temperatures uniform.

Rearward placement of the battery and DCDC converters improves longitudinal balance and rear-wheel traction on soft slopes.

Wheel speed control offsets inner and outer drive speeds during steering to prevent the sudden rush felt when a riding mower straightens.

Switching motor windings between series and parallel broadens EV torque-speed range while cutting inverter losses and converter complexity.

Regenerative deceleration and active motor short-circuiting bring a failed brake-by-wire vehicle to rest and keep it from rolling.

Staggering motor pole changes and battery series-parallel switching widens EV output range while suppressing drive system instability.

Mid-air state detection and independent wheel torque and steering adjustment help control pitch, roll, and yaw for parallel touchdown.

Sensors read user gait to control motorized foot-worn wheels, increasing walking speed without the skill demands of bikes or scooters.

A staged EV power converter combines controlled AC waveform generation with voltage boosting to cut switching loss and distortion.

This case combines coasting and braking recovery torque through mode switching to increase battery charging while keeping EV control stable.

A controller compares gear-specific rimpull torque limits with demand, then shifts gears or cuts motor torque to protect the transmission.

Temporary rapid acceleration control boosts torque on demand, then auto-releases the mode to protect motor durability and fuel economy.

A single inverter and changeover device let a vehicle supply external AC or DC power through output wiring while avoiding a two-inverter setup.

A collapsible pump-action vehicle combines manual propulsion, motor assist, and steering control to improve mobility and therapy use for handicapped riders.

By mounting the capacitor and semiconductor module on a coolant-cooled cover, the inverter saves space and stays less affected by motor heat.

Sensor-driven control combines SLAM, point-cloud processing, and obstacle detection to guide transporters through stairs, doors, and elevators.

Actual battery power feedback adjusts EV motor torque near discharge limits, avoiding overshoot while improving power use and drivability.

Independent battery packs, DC-DC converters, and bleeder resistors balance SOC in high-energy EV batteries to extend range without rapid degradation.

Excess rollback braking power is redirected to onboard work loads, avoiding resistor grids, overheating, and added vehicle weight.