Speed Controller TRIZ Cases

A non-linear deceleration profile shifts between motor-only and hydraulic braking to cut longitudinal vibration and improve EV automatic braking quality.

A pseudo clutch pedal lets EV drivers modulate motor torque more delicately, with reduced low-speed sensitivity for manual-like control.

Centralized wheel torque and speed-limit control balances regenerative and friction braking to maximize deceleration and stability.

A bidirectional torque setting range lets the electric drive correct wheel speed deviations during braking or acceleration to preserve steering and lateral stability.

Torque control adapts to tooth stiffness changes from wear, damping electric drive train gear noise over service life.

A processor reads a registration medium to auto-select virtual vehicle sound and acceleration profiles, avoiding manual setup in EVs.

Kinematic sensing detects wheelchair pushes and braking to deliver proportional power assist without heavy, complex handrim force sensors.

Fold-out front and rear floats deploy by buoyancy, letting the bicycle enter water directly while preserving land stability and steering.

Dual travel and force sensor channels let wheel-end controllers keep brake force output even if a pedal sensor or central controller fails.

Predicts motor speed from torque and supply voltage, then corrects torque demand to keep operation within controllable limits.

A pseudo clutch input lets an EV vary motor torque more delicately, while condition-based sensitivity reduction improves stability.

Micro-slip clutch control matches demanded torque before rotor magnetization, reducing torque shock and preventing sudden speed rise.

Strain gauges and accelerometers on cart movers track force and bearing changes in real time to spot uneven pressure, friction, and wear.

Load-based switching between continuous, PWM, and burst modes cuts low-load NVH in a DC/DC converter while preserving efficiency.

Road-preview NMPC adjusts front and rear motor torque to curb longitudinal acceleration oscillations from road irregularities.

A drivetrain model compensates for torsion and backlash so vehicle traction control can react faster without unnecessary torque reduction.

Intermittent torque-on and zero-torque pulsing lets multiple electric machines meet load demand with higher efficiency, better thermal balance, and lower NVH.

Speed-segmented polynomial torque estimates compensate for inverter losses, improving vehicle electric machine accuracy and real-time reliability.

Independent hull-mounted thrusters with dedicated batteries improve low-speed vessel positioning while reducing strain on the main battery.

Central target speed coordination lets zonal controllers adjust motor voltage with lower latency and more reliable multi-zone vehicle control.

One open-winding EV drive integrates traction, AC charging, and low/high-voltage DC charging to cut converter count, weight, and cost.

Limits motor braking torque after a downshift to keep wheel braking power stable, reducing slip, jerk, and comfort loss.

A LIN-linked intelligent battery sensor lets an EV supervisory controller charge the 12V battery without waking CAN or other ECUs, cutting power drain.

Sequential front and rear axle lash crossing smooths torque reversal in multi-motor EV drivetrains, reducing clunk, shuffle, and jerking.

When EV mode switches to MT mode, the control device sets a virtual gear from vehicle speed to preserve drivability and acceleration.

A dual-side output shaft and integrated motor-converter layout cut EV powertrain weight, space, and mechanical complexity.

A processing circuit scales virtual acceleration from selectable vehicle models so a BEV can mimic different driving feels without higher motor cost.

A multi-indicator EV control maps torque, speed, and clutch-like input to reproduce manual gear-shift feel without losing ease of operation.

Software reshapes virtual acceleration beyond EV limits, letting one motor reproduce the feel of higher-performance vehicle models without added cost.

Driver intent from pedal opening and steering angle sets filtered front wheel motor torque for a smooth electric vehicle drift exit.

By placing the reception coil, converter, and inverter inside the wheel, this case cuts obstacle-induced eddy currents and power loss.

Balances unmet torque between axle motors under battery power limits to preserve intended yaw moments and vehicle drivability.

Rotational energy from train disc brake rotors is converted through axle-driven generators into stored battery power, cutting emissions and adding usable energy.

Holding the paddle shift blends regenerative and hydraulic braking to prevent stop micro movements and reduce motor heat in hybrid vehicles.

A matched drive-to-brake torque handover keeps multi-axle hill hold smooth, cutting creaking, jerks, energy loss, and motor overheating.

Front and rear motor torque regions are split to evade the backlash band, limiting gear strike, driveshaft torsion, and NVH.

A shared EMC filter and intermediate circuit let multiple vehicle high-voltage components use one housing, cutting redundancy, size, and complexity.

A separate connector-fixing plate absorbs insertion reaction force, cutting cover load and stiffness in a smaller, lighter power converter.

Breaker-controlled winding switching lets one inverter move between OEW and Wye modes to match speed, torque, and power demands more efficiently.

Separate high-voltage and low-voltage module integration cuts wiring and space while limiting heat and EMC interference in vehicle controllers.

A partition wall separates pre- and post-step-up units so the motor output connector sits closer, shortening bus bars and reducing inductance.

Active MOSFET switching and current sensing prevent battery backflow and manage bidirectional power flow in regenerative vehicle systems.

A controller permits or blocks hybrid towing mode by battery SOC threshold to prevent charge depletion, lost towing capacity, and poor drivability.

When battery high voltage is disabled, engine-driven generation keeps cooling active to limit thermal runaway spread in hybrid EVs.

Pre-calculated torque correction balances regenerative and mechanical braking to keep vehicle stops smooth and stable on slopes.

A connector discharge path drains liquid from the seal groove to prevent rust, protect terminals, and maintain waterproof electrical connections.

Periodic wheel speed oscillation helps a stuck vehicle cross static and dynamic friction, shake off sand, and regain traction.

Temperature-triggered stop-control release protects inverter switching elements while keeping VTOL rotors stopped to reduce cruise drag.

Torque correction is suppressed near zero motor load during regenerative braking to avoid kickback, abnormal noise, and unstable vehicle behavior.