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Linear Motion Tips

Covering Linear Motion Systems, Components and Linear Motion Resources

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Mini + piezo + voice coil

Programmable linear actuator features stroke to 100 mm

May 23, 2022 By Miles Budimir Leave a Comment

linear actuator

The new LDL Programmable Electric Linear Actuator from SMAC Moving Coil Actuators has been designed as a cost-competitive alternative to pneumatics. A common trend in industrial automation is that engineers are looking for electric alternatives to pneumatic components for a number of reasons, including increased control, improved cycle life, and reduced operating cost. The LDL […]

Filed Under: Linear actuators (all), Mini + piezo + voice coil Tagged With: Linear Actuator

Comparing micropositioning and nanopositioning stages

March 29, 2022 By Danielle Collins Leave a Comment

ASML Lithography Machine

Linear stage designs can range from long-stroke, high-load gantries to micropositioning and nanopositioning stages with light payloads. Although all linear stages are designed and constructed to provide high positioning accuracy and repeatability and to minimize angular and planar errors, stages for micropositioning and nanopositioning applications require additional considerations in component selection and design to achieve these […]

Filed Under: FAQs + basics, Featured, Linear motors, Mini + piezo + voice coil, Stages + gantries

What are piezo flexure stages and how do they work?

March 8, 2022 By Danielle Collins Leave a Comment

piezo flexure stage

Piezo actuators provide highly responsive, rapid movements, but their displacement is limited to just 0.1 to 0.2 percent of the actuator length. To overcome this limited stroke capability, a piezo actuator can be combined with elements, such as flexures, that provide mechanical amplification. The amplification provided by a flexure mechanism can extend the stroke of […]

Filed Under: FAQs + basics, Featured, Mini + piezo + voice coil, Stages + gantries

What are piezo actuator creep and drift?

February 25, 2022 By Danielle Collins Leave a Comment

Piezo actuators exhibit a linear* relationship between applied voltage and displacement, responding almost instantly to any change in voltage. But they also experience creep — a phenomenon in which the actuator continues to expand or contract even after the voltage change is complete. Piezo actuator creep Creep occurs because piezoelectric materials have an asymmetric charge […]

Filed Under: FAQs + basics, Featured, Mini + piezo + voice coil

Open aperture voice coil stages with 1.20 inch travel and 25.4 micron resolution

November 24, 2021 By Danielle Collins Leave a Comment

open aperture voice coil stages

Moticont’s HCDS-051-064 series of open aperture voice coil stages are linear DC motor driven stages. Designed for closed loop servo operation, an integral quadrature optical encoder with differential outputs is standard. The stages are clean, quiet, and efficient, with low inertia, high acceleration, and high speed. Each stage has a built-in home switch for accurate […]

Filed Under: Industry news, Mini + piezo + voice coil

Piezo motors vs. voice coil actuators for micron and sub-micron positioning

November 4, 2021 By Danielle Collins Leave a Comment

piezo motors

Applications that require micron or sub-micron level positioning with extremely smooth motion and control often call for a direct drive system — linear motor, piezo motor, or voice coil actuator. Linear motor stages are typically used when high forces are needed over stroke lengths greater than a few hundred millimeters. But for high-precision applications with […]

Filed Under: Applications, FAQs + basics, Featured, Mini + piezo + voice coil

How does hysteresis affect piezo actuator performance?

September 23, 2021 By Danielle Collins Leave a Comment

piezo hysteresis

Piezo actuators operate on the principle that application of an electric field (voltage) induces strain (displacement) in the material — a phenomenon known as the inverse piezoelectric effect. But if you plot the strain versus the electric field of a piezo material, you’ll see that the strain doesn’t follow the same path when the field […]

Filed Under: FAQs + basics, Featured, Mini + piezo + voice coil

Low inertia, high precision linear voice coil stages from Moticont

July 29, 2021 By Kelsey Zebrowski Leave a Comment

Moticont has introduced two high performance linear DC motor driven stages.  The VCDS-051-032-01-B1-30 (pictured) and the VCDS-051-032-01-F1-30 linear voice coil stages feature high speed, high acceleration/deceleration, zero backlash, smooth motion, precise positioning of 30 microns, high reliability and low cost.  These non-commutated stages are clean room friendly, quiet, and available off-the-shelf. With a 0.97 in. […]

Filed Under: Mini + piezo + voice coil Tagged With: moticont

Linear slide with maintenance-free voice coil motor features nanometer precision

April 15, 2021 By Miles Budimir Leave a Comment

linear slide

PI extends its large offering of nanometer precise, fast focusing stages with the addition of its new V-308 nanopositioning slide for vertical applications providing 7 mm of Z-travel and 10 nm incremental motion, making it suitable for OEM and research applications in the life science, semiconductor, and material science fields. The novel design combines long […]

Filed Under: Featured, Integrated Linear Systems, Mini + piezo + voice coil, Stages + gantries Tagged With: physikinstrumente, pi

What’s the difference between a vertical lift stage and a Z axis actuator?

March 26, 2021 By Danielle Collins Leave a Comment

In many applications that require vertical motion, a Z axis actuator is combined with one or two horizontal axes in a Cartesian or gantry-style arrangement. In these multi-axis configurations, the moved load is mounted to the Z axis via a bracket, creating a moment load that affects not only the Z axis, but also the horizontal […]

Filed Under: Ball + leadscrew driven, FAQs + basics, Featured, Mini + piezo + voice coil

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