April 10, 2018 Volume 14 Issue 14

Motion Control News & Products

Designfax weekly eMagazine

Subscribe Today!
image of Designfax newsletter

Buyers Guide

Archives

View Archives

Partners

Manufacturing Center
Product Spotlight

Modern Applications News
Metalworking Ideas For
Today's Job Shops

Tooling and Production
Strategies for large
metalworking plants

Small brush DC motors drive handheld biopsy system

When developing an automated, handheld system capable of harvesting multiple samples with a single insertion to reduce patient tissue trauma and sampling time, this medical device manufacturer turned to MICROMO for compact and high-efficiency FAULHABER® brush DC motors.
Read the full article.


Compact angle sensor for robotics and other applications

See the robotics video demonstrating ease of programming and robotics application of certain angle sensors from Novotechnik. Novotechnik’s Vert-X 1600 Series of angle sensors (shown here) features easy mounting in tight spaces with a 16 mm diameter body. The sensors measure 0 to 360° with linearity ≤ ±0.3%, 14-bit resolution and repeatability to 0.1°. A variety of analog and digital output options are available.
View the video.


Zero-backlash servo rotary indexing table

The Sankyo Automation RollerDrive Reducer is a precision gear reducer that uses a zero-backlash roller gear mechanism. The unit is constructed from an input shaft and a turret (output shaft) that is assembled with roller followers. The roller followers are preloaded against a screw-like input shaft to eliminate backlash. Sankyo servo indexing tables offer a constant lead cam with a servo motor drive for programmable motion and provide fast, highly accurate motion, with the added capability to move medium to heavy loads. The RU Series servo indexing table is available in 11 different sizes and varying ratios.
Click here to learn more.


Plug-in motor controller for fast integration

Nanotec has introduced a new controller specifically for integration into devices: the NP5 plug-in motor controller, which is suitable for both brushless DC motors and stepper motors. A PCI Express connector allows for fast and easy integration into a customer-specific board, offering a compact and affordable solution that reduces wiring effort, particularly for multi-axis applications. The NP5 controller can control motors with a rated current up to 6 A via FOC, Hall sensors, or sensorless control. In addition to position, speed, and torque control, operating modes with cyclical set value specification are also available for interpolated multi-axis operation. Nanotec offers the free Plug & Drive Studio software for parameterization and programming.
Click here to learn more.


Low-profile rotary air bearing stages achieve superior accuracy with virtually unlimited life

The new A-635/A-637 PIglide low-profile rotary air bearing stages from PI (Physik Instrumente) have no rolling or sliding elements and deliver frictionless, non-contact motion, resulting in negligible reversal error and better wobble eccentricity and velocity stability -- ideal prerequisites for high-end industrial applications such as inspection, metrology, calibration, and scanning, including cleanroom environments. Featuring 3-phase, low-cogging slotless torque motors with velocity to 500 rpm and optical encoders, these stages provide outstanding resolution, repeatability, and absolute accuracy.
Click here to learn more.
Watch PI’s Air Bearing Design & Manufacturing Operation Video.


Where would I get an exoskeleton joint actuator?

maxon motor is now offering a complete joint actuation unit consisting of a pancake brushless DC motor (EC90 flat) with inertia optimized rotor, internal high-resolution 4096 MILE Encoder, planetary gearhead with absolute encoder, and EPOS4 position controller with CAN and RS232 interface. Fitting the 17-bit SSI absolute encoder directly at the joint rotation to a degree will negate the effect of gearhead backlash, giving designers increased positioning accuracy. The unit will deliver 54 Nm of continuous torque and 120 Nm on a 20% duty cycle. The system can be operated on supplies between 10 VDC and 50 VDC, and the actuation speed is up to 22 rpm.
Learn more.


Programmable electric moving coil servo actuator

Introducing the 35-mm diameter CBL35C electric cylinder from SMAC. With its built-in controller, the CBL35C controls force, position, and velocity and features simple installation. Ideal for applications with limited space but requiring accurate control, the CBL35C provides significantly longer life, programmability, high speed, accuracy, and energy efficiency while remaining price-competitive. It also enables the direct replacement of existing pneumatic cylinders and retrofits without any machine modifications required.
Click here to learn more.


Zero downtime available for FANUC robots

The Robot LINKi Zero Down Time (ZDT) service is now available to all automotive and non-automotive manufacturers who purchase FANUC robots. Launched in 2015 in collaboration with Cisco, ZDT is a predictive analytic service that automatically monitors robot health status and upcoming maintenance requirements. It eliminates the need for manual analysis and tracking, avoiding unexpected breakdowns during production. Today, over 16,000 robots in the automotive industry are operating with ZDT, which is available for all FANUC R-30iB Plus robots as well as R-30iA and R-30iB robots with the latest software version.
Click here to learn more.


Selecting pneumatic or electric actuators

For some automation applications, it can be difficult to decide if a pneumatic or electric motor-driven actuator is best. Obviously, cost can be a big factor when choosing between the two, with pneumatic actuators typically costing less. So why should you pay more for an electric rodless actuator? Rollon says the answer boils down to higher levels of stiffness, as well as dynamic speed and motor control.
Read the full article.


Top 5 challenges of motion control design

As motion control solutions -- from angle encoders to direct drive motors -- become even more ubiquitous in industrial situations, engineers face evolving demands and opportunities. From lowering the cost of advanced technologies to improving functional safety in automated environments, here are the top five challenges and opportunities in today’s motion control design industry as seen by engineers from HEIDENHAIN.
Read the full article.


XY stage gives high resolution and repeatability

The XYR-03-01 Motorized Alignment Stage from Optimal Engineering Systems (OES) is a high-resolution, high-repeatability XY-Theta (3-axis) stage for applications such as angular glass cutting and grinding, wafer alignment, semiconductor handling, and laser cutting and drilling. The linear resolution of the X and Y axis is 5µ (non-micro-step) or 0.125µ (20 micro-steps per step motor driver in use), the repeatability is 1.5µ, and positional accuracy is 5µ. The 1-mm per-turn lead screws and preloaded V-groove and crossed roller bearings add to the high precision and stiffness of the XYR-03-01 alignment stage.
Click here to learn more.


Top-of-the-range high-resolution encoder

Requirements on encoders are becoming more and more demanding, particularly for positioning applications with precision constant-speed control, where increasingly compact housings need to accommodate an ever-greater number of electrical contacts. maxon motor solves this problem with its new ENX 16 RIO (Reflective, Interpolated, Optical) encoder. It is a mere 16 mm in size and offers a resolution up to 65,536 counts per turn, making it ideal for the precise position and velocity control of DC motors. With a 16-mm outer diameter and a 7-mm overall length, the housing is mechanically robust and protected from dust due to its injection-molded construction. The operating temperature range is -40 C to 100 C. It fits the new brushless EC-i 30 motors and the brushed DCX motors. The encoder can be combined and configured with matching drives online.
Click here to learn more.


High-traction robot goes underground

Recent developments in motion control and engineering make it possible to inspect and perform maintenance in compact sewers from the inside. The underground sewer robot is equipped with a swiveling camera and an air-powered milling machine driven by FAULHABER miniature DC motors from MICROMO.
Read the full article.


Tips for selecting linear actuators

Aaron Dietrich from Tolomatic runs through the main specifying considerations for electric actuators, citing their high performance, adaptability, low total cost of ownership, and easy integration. But what about accuracy and repeatability? Should you go with a rod-style actuator or a screw type? What kind of force should you expect if you are considering converting from hydraulic to electric actuation? Tolomatic also offers an extensive ebook to help with your decision-making if you need it.
Click here to learn more.


Cost-optimized BLDC motors for series production

With the DBL36, Nanotec now offers a brushless DC motor that is designed for large quantities. This motor is available in three lengths with a rated power of 7.5 W (size S), 18 W (size M), and 33 W (size L). These electronically commuted 3-phase motors are equipped with three Hall sensors that provide information on the rotor position. They are characterized by very high efficiency and, thanks to their precision ball bearings, smooth running characteristics. The rated speed is 4,800 rpm for sizes S and M and 4,500 rpm for size L; its rated voltage is 24 V. With a rated torque of 1.5 to 7 Ncm and a diameter of 36 mm, the DBL36 is an extremely economical solution for a wide range of applications. The winding can be adapted to other rated speeds and voltages in series production.
Click here to learn more.


Game of drones? Video games to help Navy recruit unmanned systems operators

An Air Force officer operates a computer game designed to aid the U.S. Navy discover future operators for its remotely operated, unmanned vehicles (UxV). The project, titled StealthAdapt, is being developed by The Naval Aerospace Medical Institute and Adaptive Immersion Technologies, a software company, and is sponsored by the Office of Naval Research. [USAF photo by Staff Sgt. Alexx Pons]

 

 

 

 

By Warren Duffie Jr., Office of Naval Research

Can a video game help the U.S. Navy find future operators for its remotely operated, unmanned vehicles (UxV), popularly called drones?

To find out, the Naval Aerospace Medical Institute and Adaptive Immersion Technologies, a software company, are developing a computer game to identify individuals with the right skills to be UxV operators. The project, sponsored by the Office of Naval Research (ONR), is called StealthAdapt.

"The Navy currently doesn't have a test like this to predict who might excel as UxV operators," said Lt. Cmdr. Peter Walker, a program officer in ONR's Warfighter Performance Department. "This fast-paced, realistic computer simulation of UxV missions could be an effective recruitment tool."

Since the wars in Afghanistan and Iraq began, UxV have played ever-larger roles in intelligence, surveillance and reconnaissance, and other missions. Consequently, there's an increasing need for well-trained UxV operators.

In recent years, the Air Force established its own formal screening process for remotely piloted aircraft operators, and the Marine Corps designated an unmanned aviation systems (UAS) career path for its ranks.

The Navy, however, doesn't have an official selection and training pipeline specifically for its UxV operators, who face challenges unique to the service. For UAS duty, the Navy has taken aviators who already earned their wings; provided on-the-job, UAS-specific training; and placed them in temporary positions.

However, this presents challenges. It's costly and time-consuming to add more training hours, and it takes aviators away from their manned aircraft duties. Finally, the cognitive skills needed for successful manned aviation can vary from those needed for unmanned operators.

StealthAdapt is designed to address this issue. It consists of a cognitive test, personality assessment, and biographical history assessment. The cognitive exam actually is the game-based component of the system and takes the form of a search-and-rescue mission. Each player's assignment is to rescue as many stranded friendly forces as possible, within a pre-set time limit, while avoiding fire from hostile forces.

If that's not stressful enough, players must simultaneously monitor chat-based communications, make sure they have enough fuel and battery power to complete missions, memorize and enter authentication codes required for safe rescue of friendlies, decode encrypted information, and maintain situational awareness.

"We're trying to see how well players respond under pressure, which is critical for success as an unmanned operator," said Dr. Phillip Mangos, president and chief scientist at Adaptive Immersion Technologies. "We're looking for attention to detail, the ability to multitask and prioritize, and a talent for strategic planning-thinking 10 moves ahead of your adversary."

To maintain this pressure, players complete multiple 5- to 10-minute missions in an hour. Each scenario changes, with different weather, terrain, number of friendlies and hostiles, and potential communication breakdowns.

After finishing the game portion, participants answer questions focusing on personality and biographical history. Mangos' team then crunches this data with game-performance metrics to create a comprehensive operator evaluation.

Last year, over 400 civilian and military volunteers participated as StealthAdapt research subjects at various Navy and Air Force training centers. Mangos and his research team currently are reviewing the results and designing an updated system for validation by prospective Navy and Air Force unmanned operators. It will be ready for fleet implementation this year.

Mangos envisions StealthAdapt serving as a standalone testing and recruitment tool, or as part of a larger screening process such as the Selection for UAS Personnel, also known as SUPer. SUPer is an ONR-sponsored series of specialized tests that assesses cognitive abilities and personality traits of aspiring UxV operators.

Published April 2018

Rate this article

[Game of drones? Video games to help Navy recruit unmanned systems operators]

Very interesting, with information I can use
Interesting, with information I may use
Interesting, but not applicable to my operation
Not interesting or inaccurate

E-mail Address (required):

Comments:

Copyright © 2018 by Nelson Publishing, Inc. All rights reserved. Reproduction Prohibited.
View our terms of use and privacy policy