Association With Control/Drive Circuits TRIZ Cases

A drive logic circuit adds watchdog-enabled three-path torque shutoff, letting standard EV drive chips meet vehicle safety requirements.

A BLDC motor with fewer gear stages and integrated position sensing shrinks gearbox actuators while improving shift accuracy and efficiency.

A dual stationary winding and pole-lobe rotor decouple output frequency from rotor speed, removing the constant speed drive and its complexity.

A submerged closed cooling loop keeps an electric outboard motor and controller cool without water intakes, reducing drag and saltwater corrosion.

Shared control loop data lets two drive units coordinate one axis or load with higher accuracy, smoother motion, and less blocking.

A shunt resistor replaces three Hall ICs to detect sliding door motor angle, cutting cost and avoiding sensor failure points.

A radial magnetic tunnel lets coil assemblies mount rigidly to the housing while the rotor stays free to rotate with strong flux linkage.

Radial beam supports in an annular inverter housing limit motor vibration transfer to circuit boards and mounted components while keeping the unit lightweight.

Independent switching modules built into the machine replace bulky AFE converters and switchboards while enabling flexible power flow control.

A built-in heating power module uses the motor neutral interface for battery self-heating while improving EMC, packaging, and cooling.

A modular battery-powered control module lets a downhole tool run independently of surface power while improving shock resistance and reliability.

Using one shared control loop data set, each drive unit keeps dual motors aligned on the same axis to improve accuracy and prevent blocking.

A two-modulus resin seal around the conductive member resists pressure- and thermal-expansion detachment, helping keep air out of the inverter chamber.

Electronic switching and braking let a battery-powered replacement motor reverse direction and adapt power delivery for compact equipment.

An embedded 3D circuit and position sensor help a compact lens driving mechanism maintain strength, reliability, autofocus, and image stabilization.

A single current detector plus phase-shifted PWM balances multi-phase reactor currents and cuts detector count and manufacturing cost.

A chambered guide uses gravity to collect scattered oil in a separate cavity, keeping liquid out of the motor chamber.

Direct stator-mounted switching with coolant channels enables fast wye-delta transitions to extend torque and power across speed ranges.

An inner annular space between the stator receptacle and shaft sleeve improves stator and bearing cooling without enlarging the motor.

A cast system housing integrates mounting and coolant interfaces to simplify electric drive axle assembly while improving heat transfer.

An annular internal cooling channel in the motor housing cools both stator and shaft bearings, improving compact high-speed motor design.

A universal fixing member lets one motor unit mount in different orientations, expanding compatibility across multiple working units.

A heat sink protruding through a substrate hole shortens the thermal path from a semiconductor back surface and cuts heat transfer resistance.

A two-part housing layout makes the motor unit smaller and lighter for low-power working machines while keeping battery connection and control integrated.

Circumferential arm switch placement on a ring wall creates direct heat paths, lowering module temperature and limiting heat transfer.

Pressure difference and rotor speed are combined to detect motor contamination and leaks early, improving cooling diagnosis and maintenance planning.

Spring-loaded pins create blind PCB connections in motor control centers, removing cable complexity and easing unit insertion and maintenance.

Arc-shaped busbars and circumferential module layout cut inverter thickness, copper loss, heat, and noise in electric drives.

A shaft sensor placed between the rotor and bearing improves internal state estimation while preserving shaft strength and simplifying mounting.

A dual-brush commutator motor keeps brake or steering actuation running after brush failure while reducing wear and extending service life.

Injection-molded encapsulation merges the stator and power electronics, improving cooling and reducing corrosion- or vibration-driven short circuits.

A single ECU coordinates an in-wheel motor, rotary sensor, and brake actuator to simplify packaging and enable regenerative braking.

Integrated processors, signal circuits, and IoT links detect e-bike drive faults automatically, avoiding manual disassembly and speeding maintenance.

Short-circuited dual steering motors add braking torque and offset ripple, giving a more natural handwheel feel in unpowered or fault states.

Conductive stator pins create axial currents and hysteresis drag torque, giving steer-by-wire handwheels resistance during faults or power loss.

GaN and SiC multi-level inverter topologies cut switching and conduction losses in power tools while shrinking passive components.

A stacked motor, gear, and inverter layout cuts vehicle drive unit height while preserving transmission function and mounting ease.

A modular motor body separates the PCB from the rotor and supports flexible motor configurations with lower development and production cost.

A carrier-guided intermediate busbar uses radial clearance to absorb misalignment, cut static loads, and maintain vibration-resistant drive unit connections.

Elastic edge contacts replace rigid ECU shield joints to maintain EMI shielding while cutting assembly force, space demand, and cost.

Hybrid louvered bus bars route coolant through the diode connection to control rectifier junction heat without adding separate cooling hardware.

A partition wall separates the fan motor control board from the stator and rotor, blocking flammable refrigerant entry without costly special seals.

Rotor-induced pressure and speed sensing identifies motor contamination and housing leaks before cooling loss shortens service life.

A unitary heat sink and lead structure improves semiconductor cooling, cuts assembly complexity, and saves packaging space in electrified driveline power modules.

A removable closure gives direct access to a wear-resistant rotor grounding contact, reducing corrosion risk and maintenance time.

Inner and outer coolant baths cool redundant power modules in an annular converter, limiting hot zones, wiring length, and pressure loss.

Insert molding joins the metal partition wall, terminal, and resin holder to cut parts and assembly time while preserving motor connectivity and sealing.

A polymer rotor with a Halbach array and analog Hall sensing removes back-iron and enables precise low-speed BLDC control.

By mounting power and control boards on the motor end cap, the controller sheds heat without a separate heat sink and frees tool space.

Current- and angle-based correction improves magnetoresistive rotor position sensing under magnetic interference and sensor variation.