Arm With Actuators TRIZ Cases

A layered pseudo feature adds viscoelastic damping to disk-drive suspensions, cutting vibration and reducing reliance on extra piezoelectric motors.

A current mirror limit stage constrains gain current so output current stays proportional and the amplifier is protected during short circuits.

A current limit stage constrains gain current so amplifier output remains proportional during overloads and short-circuit conditions.

A less rigid base and more rigid tongue cut z-height-sensitive low-frequency modes while preserving PZT stroke in HDD gimbals.

Piezoelectric ultrasonic motors pivot disk drive head arms with lower power and heat than voice coil dual-actuator designs.

Piezoelectric output from the head suspension detects dirt and tape elongation, enabling timely cleaning and fewer tape drive data errors.

Through holes and segmented flexure pads contain conductive adhesive, preserving piezoelectric bonding, electrical contact, and head positioning.

Touchdown-output feedback sets piezo actuator voltage to stabilize the head-disk gap, reducing collision risk while supporting higher recording density.

Piezoelectric output from the tape head suspension reveals dirt, elongation, and abnormal contact before they cause data errors.

A single piezoelectric actuator flexes the base plate to rotate the load beam, reducing arm sway modes and simplifying fine head positioning.

Single-layer piezoelectric elements simplify HDD suspension actuation, avoiding dead zones and removing DC-bias circuitry.

Dual-phase drivers switch between sequential and parallel head control, reducing HDD servo-writing time and production cost.

A piezoelectric device integrates polarity identification patterns directly into its electrodes to prevent particle generation from surface markings.

Radial step in actuator bore adjusts boundary conditions to stabilize mechanical resonance and prevent slippage during operation.

Heat-treated gold and nickel mixture on swage mounts creates reliable electrical connections while reducing particle shedding in hard disk drives.

Asymmetric trailing end extends beyond flexure surface to prevent contact during piezoelectric swinging motion.

Inverting intermediate arm micro-actuator drive directions cancels multiple vibration modes, reducing phase loss and improving positional accuracy.

Segmenting a PZT actuator into active and inactive regions minimizes arm sway gain around 10 kHz while maintaining fine positioning resolution.

A cantilevered bending motor with a load assist structure protects the unsupported region in disk drive suspensions.

Current-limiting traces isolate individual failures during parallel poling, boosting manufacturing throughput.

A welded stainless steel spring finger presses a contact pad against a piezoelectric microactuator, eliminating conductive epoxy and reducing assembly time.

Reverse poling the top piezoelectric layer compensates for suspension-induced bending, increasing effective linear stroke distance.

Mounting the microactuator on the load beam side of the flexure eliminates windage buffeting exposure and tight z-height tolerance issues.

Interleaved fine actuators counteract vibration modes and radial offsets to maintain positioning precision during concurrent multi-surface access.

Bonding a stiff restraining layer to the PZT element reverses bending forces, increasing effective linear stroke length and head positioning bandwidth.

A thin-film piezoelectric element uses a conductive intermediary layer to dissipate static electricity charges from the electrode structure.

Piezoelectric brake crawler actuates clamp arms to perform inch-worm vertical positioning along a slider shaft.

A magnetic disk device calculates micro actuator gain using stored polynomial coefficients and input voltage amplitude.

Asymmetric spring extensions counteract aerodynamic excitation forces while piezoelectric actuation compensates for disk flutter vibrations.

Flexible stainless steel links transmit piezoelectric forces to the gimbal, maintaining pitch and roll freedom while reducing device complexity.

Piezoelectric units displace beams to move a tape head laterally, preventing tape damage from direct contact during high-speed positioning.

Selective gold plating on stainless steel mount plates creates durable ground paths that withstand environmental degradation and cyclic strain.

A dual-stage servo system uses independent microactuators to position read/write heads over separate recording surfaces.

A control portion updates microactuator gain estimates by equalizing signal amplitudes during transfer function measurements.

A disk drive suspension integrates a centrally placed piezo microactuator within the mount plate to shift the slider position.

A head support mechanism uses a single piezoelectric drive means to pivotally move the slider support plate.

Segmenting the ramp into stationary and movable portions allows the bracket to engage the actuator arm, enabling z-direction movement without disc collision.

An arcuate outer layer in a laminate suspension increases stroke sensitivity while controlling resonance frequency without welding distortions.

Ultra-thin porous gold plating on disk drive suspension plates maintains low electrical resistance and high peel strength in humid environments.

Inner rails between piezoelectric elements reduce mechanical stress on actuators to prevent fractures while maintaining servo bandwidth.

A pseudosymmetric head suspension positions the microactuator in the mounting region plane to reduce resonance noise.

A microactuator controller selectively couples active slider sets to a power source within a head gimbal assembly.

Rotatable carousel positions multiple disk stacks for head stack assembly access, reducing cost per unit of storage.

A shape memory alloy actuator latch uses a bistable flexure and dual wires to switch positions.

Asymmetric electrode thickness compensates for z-height changes to reduce flexure vibration phase lag and improve slider positioning precision.

A PZT microactuator with a wrap-around electrode and conductive via simplifies electrical connections, reducing contamination risks from complex interfacing.

Stiff restraining layers bonded to PZT microactuators suppress bending deformation, restoring effective stroke length and improving head positioning precision.

Convex connecting beams on a magnetic head suspension reduce stress on piezoelectric elements and increase resonance frequency.

Flexible connectors position piezoelectric actuators laterally outward from the slider edge, preventing shock-induced damage while maintaining servo bandwidth.