Speed Controller TRIZ Cases

Dynamic transition timing delays hydraulic brake takeover based on speed, deceleration, and road conditions to recover more braking energy.

Stabilizes fuel cell current and preconditions battery charge to enable accurate in-drive impedance measurement without overcharge or overdischarge.

Multi-phase torque split control across transmission shifts cuts battery loss and energy waste while preserving acceleration in dual-motor powertrains.

A controller permits towing mode only above a battery SOC threshold, preventing reduced towing capacity and poor drivability.

Wheel-speed-based slip torque control improves launch stability by avoiding inaccurate motor-speed-change calculations during vehicle start.

Blending controller trajectories with shared operating state data keeps independent carts moving smoothly during control handoffs and avoids vibration.

Dynamic power sharing between a permanent magnet motor and an electrically excited motor cuts drag loss, cost, and delay in EV drive.

A predictive DC-DC boost margin raises motor torque only during transients, reducing driveline vibration without wasting energy.

A shared multi-core controller assigns one core per axle assembly to cut latency, avoid data corruption, and improve torque and shift coordination.

Braking the PTO to zero speed before dog clutch release prevents wear and damage while enabling smooth reengagement in electric powertrains.

During drive-to-brake switching, widened feedback deviation limits curb acceleration fluctuation and jerk for smoother vehicle control.

Real-time speed profiles and component condition data cut rail vehicle energy use without costly hardware replacement.

ABS-triggered torque limit switching cuts reverse regenerative torque to prevent wheel lock and reduce repeated ABS cycling on slippery roads.

A calibrated two-stage torque ramp smooths EV lift-pedal deceleration, reducing jerk while preserving responsive energy recovery.

Yaw-rate-based rear-wheel torque suppression limits side-to-side swinging when an EV exits deep snow onto low-friction roads.

Electric machine torque is adjusted to cancel cardan joint pulsations, reducing driveline disturbance without costly constant velocity joints.

Motor torque, vibration, and sound are coordinated to mimic jet engine modes in EVs, adding driving thrill without mechanical changes.

A feedforward observer uses torque converter or launch clutch models to improve creep drivability and reduce closed-loop windup.

Dynamic front-rear force allocation uses slip angle, lateral force, and slip ratio feedback to limit tire slip and stabilize yaw.

Phase-shifted pulsed D-axis and Q-axis commands cut drive losses, smooth torque, and reduce EV noise and vibration to extend range.

Separate gradual-change paths for command and monitoring torque reduce false abnormality detection during rotary machine transients.

Wheel-generated power charges a separate mining battery in an EV, enabling mobile cryptocurrency mining with lower cooling and external power needs.

A control device switches motor power between the battery and road-fed wireless charging to handle limited battery charge acceptance.

Software-scaled speed and acceleration let a BEV reproduce the feel of faster virtual vehicles without increasing motor capability or cost.

Switching a vehicle’s second motor by driving mode, speed, and status cuts unnecessary energy use while preserving stability and range.

Virtual clutch and sequential shifter control lets an EV mimic manual-transmission driving while preserving normal EV ease of use.

By combining multiple SOC uncertainty factors, the battery controller improves capacity estimation and charge-discharge control.

A breaker-switched inverter shifts motor windings between OEW and Wye modes to balance torque, efficiency, and multilevel voltage output.

Breaker-switched inverter stages shift motor windings between OEW and Wye modes to improve torque and efficiency across changing speeds.

A dynamic indicator links wheel torque and vehicle speed to recommend dummy shift timing, making EV driving more intuitive.

Mounting the bracket to an upper second case cuts bracket height and weight while maintaining strength and reducing drive unit shaking.

By matching electric deceleration torque to axle mass difference, trailer braking stays stable and tire wear drops during friction brake activation.

Low-speed motor speed and transmission ratio control suppress audible EV motor noise while preserving torque and high-speed power efficiency.

Independent steering of up and down wheels by slope direction angle helps EVs maintain stability and control during braking on inclines.

Positive and negative d-axis current corrections keep motor terminal voltage within inverter limits while avoiding surplus weak-field current.

Optimization-based torque and gear ratio control keeps EV acceleration steady and axle torque balanced during multi-speed gear shifts.

Geofenced site IDs let onboard controllers apply local speed, battery, and telemetry settings automatically, reducing manual vehicle setup.

A space vector modulation scheme cuts THD, switching frequency, and thermal cycling in multi-source inverters for EV and storage use.

A three-level speed planner cuts computation load while balancing travel time, energy use, and safe following distance in ground vehicles.

Brake pedal distance and duration thresholds disable electric drivetrain torque during emergency stops without disrupting normal braking.

A phased clutch-closing sequence synchronizes motor and driveline speeds to cut torque disturbances, wheel slip, and traction loss.

Engine and vehicle speed thresholds detect stop contact at startup, preventing induction-motor energy waste and deadlock.

Coordinated pulsed torque commands let two electric machines share demand with lower losses, less noise and vibration, and smoother torque output.

Multiple operating points, pedal travel, speed, and resistance torque are combined to personalize EV torque output across driving modes.

Asymptotic offset torque control lets a motor-generator stop and hold a vehicle on slopes while reducing shocks and occupant discomfort.

A common controller applies the same fault action to both EV inverters, equalizing axle torque while cutting weight, ripple currents, and energy use.

During towing, the controller limits speed or air conditioning only when battery output and remaining energy indicate range loss risk.

An adjustable acceleration setting and feedback-based torque mapping improve output shaft speed control under disturbances and uncertainty.

Multiple vehicle speed and acceleration models are compared by fuel use and control margin to improve fuel economy without worsening emissions.

An n-type hole annihilation region blocks holes from reaching the dicing surface, suppressing SiC stacking faults, on-resistance rise, and power loss.

A mechanically linked second motor maintains thrust if the first fails, improving electric aircraft propulsion redundancy and certification readiness.

A feedforward wheel torque limit matched to battery discharge power reduces EV startup oscillation, NVH, and abrupt torque shifts.

Compares actual and acceptable gear-shift positions to detect inconsistencies and move an electric vehicle into a safe state.

Torque control shifts between driving and braking modes from oversteer or understeer detection to improve turning response and stability.

An integrated heat sink in the module housing cools transmission and converter electronics while limiting EMI and part count.

Real-time motor torque compensation uses pitch rate and suspension deformation to reduce braking pitch and improve ride comfort.

Stimulus-based EV control guides driver torque and speed choices to cut energy use while preserving user control and extending range.

Motor current and hydraulic pressure feedback prevent tractor shutdown during stalls and stop fifth-wheel lift once trailer landing gear clears.

Vehicle and user data guide supercapacitor battery attributes, improving EV propulsion efficiency and energy management.

Software-defined virtual gears let EV drivers tune boost torque and release deceleration, restoring engagement without mechanical transmission complexity.

Variable vehicle length lets linear movers run closer on straight segments while avoiding collisions in curves to raise throughput.

A motor-driven torque converter switches clutch lockup by torque demand and speed to cut losses while preserving torque multiplication.

When one inverter fails, dual-inverter motor control redistributes torque between OEW and Y-connected motors to maintain acceleration and efficiency.

A failsafe IC switches inverter safe states by motor speed to avoid torque braking during microcontroller faults at high vehicle speeds.

Two parallel DC dynamotors vary speed and magnetic flux to deliver CVT-like torque control without gear-shift power interruption.

Allowable power and torque ranges let dual EV motors share drive and braking loads without overusing the energy storage device.

Remote location-based switching between hybrid and battery-only train power cuts urban noise and emissions while preserving onboard power reliability.

Dynamic front/rear brake distribution raises AWD regenerative energy recovery by matching motor regeneration capacity to braking demand.

Delaying clutch closure until shaft speed gradients align reduces torque shock and vehicle speed changes during hybrid engine coupling.

Alternating active short circuit and freewheeling limits unwanted motor braking torque during inverter degradation or auxiliary battery loss.

A metal plate, ground line, bracket, and resin cover create a reliable HV connector grounding path while protecting the cable and connector from external forces.

A gateway-based control architecture lets one software platform create motion profiles and manage multiple drive types and tracks independently.

A controller predicts trail energy demand and adjusts drivetrain modes, accessories, and route guidance to avoid remote low-battery events.

Sequential high-pass filtering and positive-gradient limiting suppress jerky braking torque and unwanted acceleration in vehicle electric machines.

An auto leveling sensor adjusts electronic brake boost to maintain braking force under changing vehicle loads and avoid longer stopping distances.