Speed Controller TRIZ Cases

Electric spool machines balance thrust during single-engine descent, cutting fuel use, limiting yaw, and keeping the idle engine ready to relight.

Adjusting inverter switching frequency by temperature and motor operating point limits overheating while reducing ripple, losses, and NVH.

Predictive torque shifts between two traveling motors raise regenerative braking earlier, improving stopping response while reducing shock.

By raising transmission input torque during downshifts, this case cuts rear-wheel regenerative brake torque to suppress oversteer.

Drivers can tune BEV range extension across propulsion, thermal, and auxiliary loads to save energy without fixed comfort and performance tradeoffs.

Switching battery modules between series and parallel enables 400V and 800V charging without a voltage converter, cutting loss and cost.

Coordinated regenerative torque control during vehicle towing improves charging efficiency, stability, and battery overcharge protection.

Selected braking, driving-force, and acceleration data reduce disturbance in vehicle weight estimation for more reliable control.

Reverse travel triggers reduced balancing or motor disengagement, giving one-wheeled riders a predictable and safer way to dismount.

Mode-specific creep cut conditions reduce EV power consumption in autonomous driving while preserving acceleration response in manual mode.

Side-mounted inverters on the battery housing improve multi-motor power flow, balance vehicle layout, and reduce wiring complexity.

A coolant channel built into the capacitor housing improves heat transfer to the core package, extending motor control unit reliability.

Wheel-end demand torque is allocated across electric drive axles using efficiency states and axle limits to reduce power consumption.

Wireless power transfer through a sliding transformer keeps track movers powered in motion, avoiding stops, cables, and throughput loss.

Each locomotive uses synchronized radio messages and virtual in-train force models to coordinate starting and stopping with less reliance on lead commands.

BSFC-based controller adaptation lets a TTR electric drive axle recognize paired engines and improve fuel efficiency without redesigning the primary drivetrain.

Actual braking and driving force sensing improves wheel load calculation and vehicle gravity center estimation when commanded torque is inaccurate.

A staged motor slowdown before reverse engagement helps electric watercraft switch direction smoothly with less control instability.

A dual-acceleration control strategy limits EV drive output while preserving speed on steep grades and under high payloads.

Offset arm placement and aft battery packaging widen the cab in a compact telehandler while preserving counterbalance and stability.

Using identical motor casings with different oil reservoirs and inverter orientations cuts EV drive unit tooling, line complexity, and factory space.

A rear-wheel steering layout with low-center direct drive simplifies operation, cuts maintenance burden, and keeps urban storage compact.

Dynamic speed limit adjustment uses accelerator pedal input to allow emergency acceleration while conserving energy and extending EV range.

Separate gear and power-conversion cases cover the motor shaft axis to cut shaft-end and gear-mesh noise while keeping the drive compact.

A modeled engine creep torque lets the electric motor mimic torque converter behavior, keeping hybrid vehicle creep consistent on slopes.

PWM duty-cycle control and output filtering let a high-voltage source drive a lower-rated motor while reducing weight and insulation stress.

During single-engine descent, electric power extraction balances thrust, cuts fuel use, and keeps the idle engine rotating for faster relight.

A three-layer motor controller uses an electromagnetic shield between control and driver sections to improve EMC and cut vehicle radiation.

Mode-based battery input limits curb motoring noise during accelerator-off regeneration while maintaining deceleration with friction brake compensation.

Adjustable phase-shift interleaving improves voltage levels, cuts switching ripple, and preserves multimodal converter performance.

By integrating speed reduction and torque vectoring in shared planetary gears, this EV drive cuts length growth and manufacturing cost.

A bidirectional converter keeps the double-layer capacitor above a defined intermediate-circuit voltage while blocking reverse power flow to the battery.

Measured lash angle lets torque shaping adapt to drivetrain backlash, reducing clunking, vibration, and NVH during vehicle operation.

Road and battery conditions guide EV velocity profile selection to balance travel time, energy use, and battery life.

Current-based target torque control resolves tooth-on-tooth positions in transmission shift elements without friction parts, reducing damage risk.

A virtual torque model and motor torque calculator reproduce manual-transmission drive force changes despite different EV and hybrid powertrain structures.

Low-voltage vehicle control signals turn pedals, steering, and gear inputs into immersive game controls without extra hardware.

A dual-battery control strategy matches high and low C-rate cells to route segments, improving charging efficiency and battery life.

When charging power stops, controlled switching from DC supply to battery power slows motor current decay, maintains torque, and reduces EV slipping noise.

Real-time mode switching lets a vehicle inverter vary AC output and torque strategy to cut losses and improve powertrain efficiency.

By placing the sensor rotor on the motor shaft and the stator in the control assembly, this case cuts axial size, wiring, and cost.

Gate-driven traction inverter transistors discharge the DC bus capacitor bank safely, avoiding dedicated bleeder resistors and added circuit overhead.

Converter and controller coordination keeps traction power stable during onboard-to-off-board switching, avoiding sudden acceleration or deceleration.

Independent wheel speed control and selective braking tighten electric vehicle headland turns while improving stability and reducing operator fatigue.

Precomputed braking and coasting patterns guide a train to stop outside high-risk zones during power loss or overhead wire failure.

Motor speed feedback, model simplification, and dead-time compensation suppress EV resonance and backlash hunting to improve ride comfort.

Rapid speed oscillation in a disconnected electric machine generates heat to warm vehicle powertrains and subsystems without extra heaters.

Integrating the sensor rotor into the shaft and the stator into the control assembly cuts axial space, wiring length, weight, and EMI.

Pre-calculated torque maps let a vehicle control unit balance axle and wheel torque in real time, cutting computation while preserving stability.