Speed Controller TRIZ Cases

Variable front and rear reduction ratios switch EV drive modes by speed and mode to improve efficiency, range, and high-speed stability.

A detachable second high-voltage battery is selected by driving area and motor load to extend EV range, cut power loss, and balance wear.

By raising electric machine loss under conservation conditions, this case sustains regenerative braking and cuts brake dust when battery charge is high.

Opposed stacked terminal groups and insulating sheets reduce stray inductance in AC electrical assemblies, improving stability and interference resistance.

Occupant input sets a local detection range, then the vehicle switches from manual to autonomous passage mode to traverse narrow paths more easily.

Switching virtual engine speed reference between front and rear wheel speeds keeps the display aligned with drive state and reduces driver discomfort.

Road topography and motor efficiency maps guide EV speed and torque recommendations to cut energy use and extend driving range.

Engine braking and sequential downshifting control downhill speed while reducing foundation brake wear, overheating, and emergency brake loss.

When battery discharge is constrained, equal torque adjustments across electric machines limit power draw while preserving EV stability and drivability.

A shared active EMI filter lets AC/DC and isolated DC/DC stages work without extra contactors, cutting package size and component count.

Zero-phase voltage adjustment in overmodulation cuts capacitor ripple and switching loss while maintaining stable motor torque.

Wireless energy transfer between fleet vehicles balances state of charge and improves energy use through paired charging coils.

By detecting transmission deformation before gear re-contact, this control cuts EV torque-reversal rattle, vibration, and noise.

When battery charging is unavailable, generator-to-motor power recirculation delivers vehicle braking while reducing friction brake wear.

A self-aligning bonding layer keeps a large drain terminal overlapped with the die pad, preserving bonding area, current capacity, and heat dissipation.

Shared monitoring of phase currents and brake motor position enables low-cost redundant control with majority-vote fault detection.

When battery SOC hits its upper limit, this control approach converts lost regenerative braking into physical braking to prevent downhill acceleration.

A motor neutral-point power line lets one bidirectional inverter handle vehicle-home AC charging and discharging with less converter complexity.

Measures train deceleration during mechanical-only braking to detect brake deterioration and keep target deceleration under control.

Sensors track g-forces, tilt, and speed so motor power can be cut during turns, preventing baggage tractor rollovers.

Differential wheel speeds from individually controlled electric machines cut steering energy use while preserving redundancy if steering components fail.

A vehicle-to-vehicle power connection lets a depleted electric truck keep moving without mechanical towing while preventing cable disconnection.

At standstill, the control unit limits driveline force by vehicle weight and remaps pedal positions to keep response consistent across loads.

By adjusting motor torque from gear rotation distance, this case cuts torque and speed fluctuation to smooth EV gear meshing.

A control unit shifts torque between front and rear axles or wheels to improve hill climbing and traction in stuck or slippery conditions.

Sensor fusion from time-of-flight, SLAM, and obstacle processing helps a transporter detect doorways and move through them more safely.

Cooling water and heat-exchanger control keep the motor and power supply within range despite changing dump truck hydraulic pressure demands.

Detects insufficient motor torque and switches to a limited boost mode so electric lift trucks keep moving uphill with heavy loads.

An integrated bidirectional converter topology removes high-current contactors and extra DC/DC stages to shrink EV power-control packaging.

Environmental sensor data guides regenerative coasting torque to match road artifacts and traffic, improving EV deceleration smoothness and energy recovery.

Torque maps and speed-based ramping limit wheel slip without ground speed sensors while preserving launch torque and tractive performance.

Reproduced gear shift audio gives electric vehicles driver feedback and involvement without adding a mechanical transmission.

By comparing EV, series, and parallel modes while keeping the engine in its economic zone, this control cuts hybrid energy conversion losses.

Dynamic torque curves let neutral-mode regenerative braking hold downhill speed, recover energy, and reduce service brake wear.

A force-sensing tow-trailer connector detects hitch tension and compression to coordinate trailer wheel response and prevent destabilizing loads.

A four-node planetary gear set decouples motor and vehicle speed, enabling clutchless variable transmission and higher EV efficiency.

Dynamic regenerative brake limits cut switching time to friction braking while preserving energy recovery when lower target brake force is predicted.

Dynamic unit-specific control limits based on longitudinal speed improve multi-unit vehicle stability and help prevent rollover and jack-knife.

Alternating charging through front and rear motor neutral points boosts EV charging voltage, cuts inverter heat loss, and protects switching elements.

A control unit limits standstill driveline force by vehicle weight and remaps pedal positions to keep launch response consistent across load states.

Independent brake and accelerator signal checks let the BMS cut drive power when the ECU fails, helping EVs decelerate or stop as intended.

Switches, a neutral line, and an inductive filter balance split-phase current draw and stabilize voltage for unbalanced loads.

An AI controller switches between the fuel cell and battery from real-time vehicle conditions to improve efficiency and predict failures.

Directly converting braking energy to EV loads and V2L cuts double conversion loss, heating, and battery dependence.

A signed wheel slip limit lets brakes transfer torque across an open differential, reducing controller latency issues and actuator fighting.

Aggregated mechanical and electrical power feedback guides torque distribution across multiple actuators to cut energy losses in vehicle propulsion.

An integrated housing combines capacitor, PCB, heat sink, and filter mounting to shrink motor controller size and simplify EV powertrain assembly.

Navigation and travel-pattern prediction guide hybrid mode selection to cut charge-sustaining energy use and improve drivability and NVH.

A suspended inverter cover uses the gearbox recess to place the capacitor and offset the semiconductor module, cutting height and assembly complexity.

Motor torque is varied multiple times during shift events to mimic clutchless manual driving feel in an electric vehicle.

Route-based force sensing builds a vehicle weight profile, replacing generic mass estimates to improve braking, acceleration, and control accuracy.

ANN-based tuning adjusts e-bike motor assist from rider torque, speed, personal data, and terrain to reduce fatigue across users.

Multiple flight controllers solve thrust allocation independently so eVTOL multicopters can stay airborne and land controllably after motor failure.

Higher regenerative torque in track mode cuts friction brake heat, helping prevent fade and vapor lock while maintaining stable braking.

Three switches let an EV drive inverter use motor inductors as a boost converter, charging batteries from lower-voltage DC sources.

Position feedback between the pedal generator and drive motor restores chain-like pedaling feel and torque response in a chainless e-bike.

When wheel speed sensors fail, drive source speed is used as a backup index to limit torque and prevent differential burn-in.

A detachable filter module and shield suppress coupled AC voltage and EMI, letting one vehicle component work on shielded or unshielded DC networks.

Dynamic torque splitting between regenerative and friction braking improves emergency response, vehicle stability, and energy recovery.

Hardware safety switching applies preset safe values across motor control outputs immediately after fault detection, avoiding software delay.

Independent wheel motors, sensors, and power management stabilize electric trailer assistance while improving efficiency and EV towing compatibility.

Driver entry detection and in-cabin authentication let remote EV air conditioning switch smoothly into start mode with a familiar start sequence.

Adaptive regenerative torque uses towing direction and left-right wheel state to keep a towed EV stable while maintaining battery charging.

Motor coil vibration creates audible EV alerts without rotating the wheel, cutting speaker parts, complexity, and manufacturing cost.

Braking force is shifted from the front axle to rear-axle regeneration to curb understeer in electric tractor trailers while preserving energy recovery.

Dedicated monitoring sections isolate a failed motor controller so other motor sections keep the mobile body moving without a full shutdown.

Virtual speed, sound effects, and electronic clutch control let an electric motorcycle mimic gear shifts without a mechanical gearbox.

A motorcycle backup controller sustains reverse drive after switch input and stops on brake lever operation, easing rider workload during parking.

Variable power settings, adjustable seating, and modular running gear let one youth EV adapt to rider growth while maintaining safer operation.

Motor speed and angular acceleration ratios identify vehicle trackslip trends earlier, improving real-time torque control on low-adhesion roads.

Alternating energy-dissipation resistors in a vehicle PCU absorbs abnormal voltage while keeping inverter temperature below its rated limit.

Detecting zero-torque load changes in motor-driven gearboxes helps flag tooth impact wear early and trigger gentler control or shutdown.

Voltage and current DQ transforms let a PLL synchronize generator and converter states without encoder sensors, cutting PTO control cost and complexity.

Adaptive brake lamp control uses following-vehicle distance to adjust lamp thresholds or regen torque during coasting deceleration.

Torque fluctuation is predicted from the second motor speed and offset by correcting the first motor command for smoother EV drive switching.

Battery-powered hub motors decouple travel speed, feed rate, and spread pattern to reduce operator fatigue and improve particulate uniformity.

Dynamic fuel-flow and battery power split control helps aircraft propulsion follow step-load changes while reducing battery size and wear.

PWM-controlled AC heats a parked drive motor's stator and rotor to warm vehicle components without added heaters, cutting cost and complexity.

A staged EV wake-to-ready sequence uses visual state cues to improve operator awareness and prevent unintended motor propulsion.

A bidirectional charger reuses DC/DC converter legs to drive a torque vectoring motor while battery discharging, cutting EV powertrain components.

Path search guided matching with backtracking verification improves GPS trajectory accuracy and speed in complex road networks.

A hierarchical vehicle interface combines trailer-specific drive modes with real-time wheel, suspension, and battery views to cut distraction.

Mode-specific vehicle displays show drivetrain, suspension, and trailer data in real time to cut driver distraction and support correct towing setup.

A hierarchical in-vehicle interface links drive modes with trailer profiles, cutting driver distraction during towing setup and adjustment.

Relay-first switching lets a hybrid vehicle generator keep travel possible during control faults while preventing contactor welding and voltage surges.

State-based gear-shift audio playback restores EV driver feedback and involvement without adding mechanical transmission hardware.