Speed Controller TRIZ Cases

Motor short-circuit braking holds electric mobility on slopes without a separate parking brake, reducing manual force and maintenance.

Mist or foam sealant ejection on impact spreads insulation across the housing to prevent short circuits and electric leakage.

A control unit estimates travelable time from battery level and power use, then limits motor output to avoid race-ending battery depletion.

Compensates CAN and sensor delay in wheel-speed signals to improve vehicle body speed estimation and traction control in electric vehicles.

QP-based control coordinates axle motors and service brakes to recover energy while meeting heavy vehicle braking force limits.

Inverter transistor switching controls field current directly from the HV bus, removing the converter to cut cost, complexity, and losses.

A current-vector shift moves the machine to a power-neutral operating point before active short-circuit, limiting transient currents and magnet demagnetization.

A VCU lets EV drivers set powertrain parameters within operable limits, enabling personalized driving modes without manufacturer updates.

Orthometric altitude guides the battery SOC limit to preserve regenerative braking capacity on descents without added brake resistors or cooling circuits.

Closed-loop inverter control heats EV power switches to remove trapped charges, restore threshold voltage, cut losses, and extend module life.

A DC-DC converter handles high-power capacitor discharge first, then a passive resistor finishes safely with lower heat and component cost.

Multiple control modes let a processor share steering, speed, direction, and locomotion control for wheeled and walking vehicle motion.

Drift control adapts accelerator response, assist level, and road surface input to match driver skill for more controlled drifting.

Speed instruction correction based on left-right wheel commands reduces over-sensitive turning, wheel lock, and ground marks at low speed.

Road-adhesion feedback and driver settings are used to adjust regenerative torque, improving energy recovery without destabilizing the vehicle.

Sensor-gated motor assistance checks user presence and load state to block unsafe activation and prevent unintended handling movement.

Direct distance-based motor control shortens signal paths in EV automatic parking, improving control speed and parking accuracy.

Segmented control modules and full-bridge groups simplify DC power transfer while optimizing charge and discharge across storage elements.

Sensor-based fatigue detection triggers seat massage and driving mode switching to ease clutch-related driver strain and improve comfort.

A triangular lateral-member layout supports a rear EV drive unit, preserves cabin space, and avoids rear-wheel steering interference.

A motion observer estimates shaft torque disturbances so the controller can cancel harmonic ripple and reduce EV noise and vibration.

A low-battery control mode cuts motor power use so an electric work vehicle can still reach a charging location without depletion.

Voltage relaxation during ignition-off periods is tracked across cycles to flag repeat defective cells before high-voltage battery failure.

An insulating collar around busbar openings keeps fastening means in place during inverter assembly, reducing rework, damage, and short-circuit risk.

A five-relay layout pre-charges inverter and DCDC capacitors while cutting relay count and overall power control unit size.

Yaw-based energy recovery torque control limits rear axle sideslip and drift in EVs while reducing jerky ESC intervention.

Load, acceleration, and trailer-angle sensing guide brake and wheel-motor control to improve towing stability, maneuvering, and energy use.

Controlled motor excitation adds engine-like vibration during a braked BEV launch, restoring tactile feedback and a more noticeable start.

A shared cooling channel thermally couples the capacitor assembly and inverter modules, cutting space while improving heat removal and rigidity.

Balances thermal and electric power in a single-engine hybrid drivetrain to improve supervision, usable electrical power, and safety.

Vibrating a pseudo shift lever gives clearer approaching-object alerts than seat vibration, helping EV drivers notice hazards sooner.

An in-vehicle unit mounted on the rear cover doubles as a vibration restraining mass, cutting hybrid drive noise without extra parts.

Real-time control of driver inputs and vehicle parameters cuts power variation between drivers and helps an electric delivery truck finish its route.

Balancing wheel slip across electric machines with different efficiency maps improves heavy-duty vehicle propulsion, braking, and tire wear.

LiDAR sensors on the tube wall use vehicle-mounted reflectors to achieve precise hypertube positioning with fewer sensors and lower noise.

Automated suspension height control lets a self-powered dolly align drawbar and fifth wheel for faster trailer coupling and better handling.

A driveline controller estimates vehicle mass and road grade to tune regenerative braking and anti-rollback torque, improving stability and efficiency.

A one-way clutch lets an electric vehicle hydraulic pump idle when unused, cutting battery drain while keeping fast pump engagement.

A dual-motor planetary driveline uses selective clutching to keep torque flowing during shifts while enabling flexible 2WD and 4WD distribution.

Sensor-based torque control detects dangerous roads and smooths EV acceleration to prevent drivetrain damage without larger hardware.

Closed-loop rear wheel steering uses vehicle state estimation to cut tuning effort and maintain stability under driving disturbances.

Predictive grade-based charging and battery depletion keep fuel cell vehicles delivering torque and regenerative braking on sustained uphill loads.

Multiple efficiency improvement plans are generated from detected EV energy-loss factors, then applied according to the driver's selection.

Dual ECU-ASIC validation prevents false limp-home activation after processor faults while preserving normal electrified vehicle operation.

Gear tooth pressure is used to drive virtual vibration and sound, giving EVs ICE-like shift feel and driving sensibility.

Vibrating the pseudo shifter instead of the seat helps EV drivers distinguish approaching-object alerts from road-surface vibration.

Direct communication between driving controllers and the motor control module cuts control delay for faster inverter current and torque adjustment.

IMU-based gain control adjusts wheel motor speed to counter slope and bump-induced veering while preserving smooth steering and quick turns.

When speed reducers are cold, the controller prioritizes the lower-force motor to cut energy loss and maintain efficient vehicle drive.

Balancing functional parts opposite the charging unit offsets center-of-gravity shift and improves vehicle drive stability.

Dynamic torque limits counteract road load torque to prevent imperceptible rolling while minimizing mechanical brake wear.

A motor controller applies pre-load torque to an electric vehicle drivetrain while stationary.

A guidance system uses an exponential function to determine the line-of-sight circle radius for autonomous marine vessels.

Dynamic module reconfiguration eliminates bulky DC/DC converters, reducing power loss while maintaining voltage compatibility.

A fail-operational e-powertrain distributes control functions across existing controllers using ASIL decomposition.

An axle assembly uses dual planetary gears and a rotating reaction mass to vector torque, eliminating complex magnetic brakes and reducing turning radius.

A motor-driven gear replaces the engine reverse gear to position an off-axis electric motor, eliminating the need for a second auxiliary motor.

Monitoring circuit aligns control system timing to prevent motor pulsation.

A modular electric drive system uses series and parallel inverter connections to manage multiphase winding strands.

A hybrid vehicle controller manages traction motor torque through a defined lash zone region to mitigate driveline disturbances.

An electronic power converter uses integrated modules to combine AC-to-DC and DC-to-DC conversion stages within a single device architecture.

A speed management system modulates vehicle travel velocity to match calculated maximum energy consumption thresholds.

A selectable one-way clutch manages gear ratios in electric vehicle drive units.

Block-based motion control divides track segments into discrete zones to assign mover paths and reduce minimum spacing between independent carts.

A vehicle control device calculates torque command values based on travel direction to optimize motor output.

A charge controller acquires weather data to stop external charging during flood risks.

An electric drive inverter converts charging voltage to supply power without extra converters.

Dual position sensors verify neutral gear and shift lever alignment before enabling ignition, preventing accidental startup while the vessel is in gear.

Baffle partitions separate air guide passages to cool dual power drive heat sinks, resolving thermal management constraints in compact electric vehicle layouts.

An electric machine drives wheels and acts as an electromotive brake, eliminating bulky mechanical brakes that consume structural space.

A damping filter removes torsional vibration frequency components from drive torque signals to ensure smooth vehicle acceleration.

A control unit estimates expected motor current values using a mathematical model and compares them against measured signals to identify operational deviations.

A movable body restricts driving amount using a 3D sensor to detect obstacles in primary and secondary areas.

Electronic control unit reduces vehicle speed when solar load exceeds a threshold, increasing photovoltaic energy collection while balancing travel efficiency.

A towed vehicle outputs motor torque to assist towing based on driver request signals.

Color-changing LED indicators display fuse status to resolve the contradiction between automatic protection and user awareness of power supply state.

A motor drive controller adjusts a control coefficient based on vehicle speed to maintain desired power generation efficiency during regeneration.

Feedforward torque prediction anticipates load changes to stabilize DC bus voltage during transient drops without waiting for error feedback.

A vehicle controller adjusts electric machine torque based on road surface gradients to enable smooth one-pedal propulsion and braking operations.

A travel management device transmits reservation requests to reserve track block sections via wireless communication between on-board vehicles and ground units.

A vehicle power management unit determines anticipatory load profiles from secondary consumers to guide driving curve data selection.

A control device calculates a compensated temperature to adjust torque commands for AC rotating electric machines.

Merged generators and power converters replace mechanical reduction gears, solving space constraints in smaller ships while enhancing fuel efficiency.

A discrete-time mixed-integer optimal control approach stabilizes hybrid vehicle energy management.

A braking control method distributes regenerative and hydraulic torque to maximize energy recovery.