August 07, 2018 Volume 14 Issue 29

Motion Control News & Products

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World's most compact 3,000-W integrated servo motor

JVL's newest addition to its motor portfolio is a complete, high-capacity MAC motor with a rating of 3,000 W. MAC motors are complete servo systems that include a high-dynamic AC servo motor, hall sensors, encoder, power supply, driver, and positioning controller and Nano-PLC, as well as options for incorporating various control modules such as Bluetooth, WLAN, ZigBee, EtherCAT, EtherNet/IP, CANopen, DeviceNet, Profibus, Profinet, Nano PLC, and more. With a length of only 311.8 mm and a torque of 9.55/28.6 Nm at 3,000 rpm, this MAC motor matches the size of traditional servo motors without built-in controllers. Many more features.
Learn more.


Smart gripper has fingertip sensors that see and feel objects

You can automate high-precision assembly tasks with the OnRobot RG2-FT smart gripper. The built-in 6-axis F/T sensors at the fingertips provide extremely accurate gripping for better production quality. This gripper is so smart it detects the risk of slipping before it happens! The Danish company OnRobot has just opened its U.S. headquarters in Dallas. The company is a global leader in end-of-arm tooling for collaborative robots and also provides hardware and software used with collaborative robots from a variety of robot manufacturers such as Universal Robots, KUKA, FANUC, and Yaskawa.
Learn more.


SmartMotor can handle extreme low temps

Moog Animatics has released its new Low Temperature Range (LTR) SmartMotor in two standard NEMA frame sizes: model SM17205M-LTR (the LTR-17) and model SM23165M-LTR (the LTR-23). Both motors have been meticulously engineered for robust and reliable operation in extremely frigid environments and at high altitudes. To achieve this, onboard internal heaters ensure that the motors can start up in temperatures below -40 degrees C. Other design changes allow these motors to withstand random vibrations up to 6G 10-2000 Hz, and standard IP sealing protects the motors from condensation.
Learn more.


Small DC motors for spectrophotometry

The DeNovix team needed a motion solution for their spectrophoto-meter application which called for intermittent short, quick motions with micron-level accuracy. After research and testing, they chose a FAULHABER small DC motor configured with a MICROMO encoder and an all-plastic planetary gearhead to successfully bring their product to market.
Read the full article.


100 million random moves: New lifetime spec for rotary micro stage with integral controller

New Scale Technologies has significantly increased the lifetime specification for its M3-RS-U Rotary Smart Stage, a precision rotary micro stage with embedded controller. The new specification of 100 million random positions underscores the utility of these compact, all-in-one motion modules for integrating embedded motion inside in medical, commercial, and industrial instruments. The increased lifetime spec makes the selection decision even easier for product designers who need to embed motion in their portable and hand-held systems.
Learn more.


Electric extreme-force linear actuators beat hydraulics in metal casting

Metal casting is precise work conducted in a high-temperature environment. Unmolding a workpiece requires both force and control. It's a task often left to hydraulic cylinders, but their high-force capabilities come with significant drawbacks, like inadequate control and messy leaks. New, electric extreme-force linear actuators offer precision and clean operation.
Read the Tolomatic blog.


Traction drives leverage engineered fluids

Rolling Motion Industries (RMI) has released two high-efficiency traction drives: the MAR-17-1-2.1 (speeds to 3,600 rpm with 10 to 20 in./lb of torque) and MAR-23-1-2.1 (3,600 rpm with 20 to 30 in./lb of torque). These one-way traction drives have only six moving parts and use an engineered traction fluid with a coefficient of friction of just 0.1 to 0.12. These traction drives typically last three times longer than conventional gearboxes, and with no metal-to-metal contact they generate up to 72 percent less heat after 24 hr of continuous operation. Additionally, they create up to 38 percent lower dB at 3,000 rpm than conventional gearboxes (less than a home refrigerator). Applications include: pumps, blowers, fans, turbo and superchargers, conveyers, HVAC systems, and medical -- anything that rotates.
Learn more.


First explosion-proof stackable multi-turn encoder

Sensata Technologies has introduced the first explosion-proof stackable multi-turn encoder, an ideal position sensing solution for oil and gas applications such as drawworks, top drives, and pipe-handling equipment where working conditions are extreme. The new encoder, BEI Sensors' model MAAX, is ATEX and IECEx certified to operate in explosive environments and features a Profibus output in a unique, stackable package. CANopen and SSI outputs are also available. The MAAX provides up to 16 bits of resolution as well as up to 16 bits of turns by mechanical counting. This workhorse product operates directly in Zone 1 environments without the need for an accompanying Intrinsic Safety barrier.
Learn more.


QTR Series torque motors by Tecnotion

With Tecnotion torque motors, the magnetic design is optimized for maximum flux density and copper fill to provide very high torque-to-volume ratios. Motor sizes from 68-mm to 160-mm diameters are available, packing serious power to work with any servo drives on the market. Tecnotion torque motors are extremely compact, provide a very stiff drive train, eliminate the need for time-consuming mounting procedures, are virtually maintenance free, and can be integrated directly into the machine structure, while the spacious open inner diameter enables wire and cable feedthrough. The entire series comes with completely sealed stators and integrated temperature protection and measurement sensors.
Learn more.


160 pages of piezo linear motors, rotation stages, and multi-axis motion systems

PI's new comprehensive piezo motor solutions catalog covers a large number of linear, rotary, and multi-axis motion systems based on a variety of piezo motor types along with their appropriate controllers and drivers. Ultrasonic piezo motors, for example, are preferred for high-speed applications; inertia motors are small and cost efficient; PiezoWalk drives provide the highest forces up to 800N; and piezo-ratchet drives can replace micrometers in remote "set and forget" applications. All piezoelectric motors are self-locking, field-less, and not affected by magnetic fields, and they can be integrated easily mechanically.
Get the PI catalog today (no registration required).
Watch different types of piezo motors in action.
Learn about different kinds of piezo motors products.


Electromechanical actuators with modular design

SKF CASM-100 electro-mechanical actuators from SKF Motion Technologies have been uniquely engineered with a modular design, enabling tailored solutions for a wide range of industrial linear movement and positioning applications. Modules provide choices among motor types, gearboxes, ball screws or roller screws, and accessories. Standardized interfaces connect the different components. These actuators use up to 80 percent less energy than pneumatic cylinders and 50 percent less energy than hydraulic alternatives and eliminate any need for constantly running compressors, hoses, and other components.
Click here to learn more.


Precision linear motion drive with thrust capacity to 800 lb

The Precision Motion Drive System from Amacoil/Uhing is a Uhing Model RG rolling ring linear drive integrated with a motion controller for precision linear motion applications. The Precision Motion Drive is fully programmable and meets application requirements for precision winding/spooling, pick-and-place machines, X-Y coordinate tool movement, metrology equipment, and other machinery providing fast, accurate positioning and reciprocating linear motion. Depending on the size of the RG drive nut in the system, the Precision Motion Drive System provides from 7 to 800 lb of axial thrust.
Learn more.


100 million random moves: New lifetime spec for rotary micro stage with integral controller

New Scale Technologies has significantly increased the lifetime specification for its M3-RS-U Rotary Smart Stage, a precision rotary micro stage with embedded controller. The new specification of 100 million random positions underscores the utility of these compact, all-in-one motion modules for integrating embedded motion inside medical, commercial, and industrial instruments. These rotary stages are ideal for beam steering and mirror positioning applications where precise, point-to-point positioning or dynamic scanning up to 100 Hz is needed. Applications include medical instruments such as surgical lasers and fluorescence microscopes, industrial systems for 3D measurements and remote sensing, optical communications systems, and obstacle detection and tracking systems for robots and drones (UAVs).
Learn more.


New UR e-Series cobots feature unique sensing, safety, and precision tools

Universal Robots pioneered the collaborative robot and continues to evolve its ground-breaking, automation technology with the introduction of its new flagship line of e-Series cobots. The new UR3e, UR5e, and UR10e robot arms will launch in North America at IMTS in Chicago, Sept. 10-15, at Universal Robots' IMTS booth N-236861. With a new built-in, tool-centric force/torque sensor, the e-Series is ready to take on popular collaborative robot applications that require force control right out of the box such as sanding, buffing, polishing, and deburring, where force-feedback is paramount in order to obtain uniform results. Additionally, the force/torque sensor can be used to measure mass and perform inspection processes or precisely detect contact.
Learn more.


What design engineers need to know about voice coil actuator technology

Looking to develop a product that requires highly reliable, highly repeatable, and highly controllable motions? Take a look at voice coil actuator technology. VCAs are very simple yet extremely robust and precise. Sensata Technologies has published a new white paper (What Design Engineers Need to Know about VCA Technology) that covers the current state of Voice Coil Technologies for a variety of linear motion applications. Good info here.
Get the white paper. No registration required.


New study finds that using your torso -- instead of a joystick -- is a more accurate way to pilot drones

Jenifer Miehlbradt demonstrates the torso strategy developed at EPFL. [Credit: EPFL/Alain Herzog]

 

 

Imagine piloting a drone using the movements of your torso only and leaving your head free to look around, much like a bird. New research from the Ecole Polytechnique Fédérale de Lausanne (EPFL) in Switzerland has shown that using your torso to pilot flying machines is more immersive -- and more effective -- than using the long-established joystick. The results are published in the July 16 issue of the Proceedings of the National Academy of Sciences of the United States of America (PNAS).

"Our aim was to design a control method which would be easy to learn and therefore require less mental focus from the users so that they can focus on more important issues, like search and rescue," says lead author Jenifer Miehlbradt of EPFL's Translational Neuroengineering Laboratory led by Bertarelli Foundation Chair Silvestro Micera. "Using your torso really gives you the feeling that you are actually flying. Joysticks, on the other hand, are of simple design, but mastering their use to precisely control distant objects can be challenging."

The scientists wanted to observe how people use their bodies to pilot a flying object, in this case a drone, and determine which movements are most intuitive and natural -- approaching the pilot problem from a completely new perspective.

They started by monitoring the body movements of 17 individuals thanks to 19 markers placed all over the upper body as well as their muscular activity. Each participant followed the actions of a virtual drone through simulated landscapes that passed by as viewed through virtual reality goggles.

Motion patterns emerged, and the scientists quickly established torso-related strategies for piloting drones; they found that only four markers -- located on the torso -- were needed to pilot flight simulators and real drones through a circuit of obstacles effectively.

Overall, the scientists compared their torso strategies to joystick control in 39 individuals. They found that torso drone control outperformed joystick control in precision, reliability, and with minimal training sessions.

"Data analysis allowed us to develop a very simple and intuitive approach which could also be used with other populations, machines, and operations," says Micera, also at the Scuola Sant'Anna in Italy in Biomedical Engineering. "The approach significantly improves the teleoperation of robots with non-human mechanical attributes."

While the PNAS results provide a truly new and completely immersive piloting strategy with a focus on characterizing the relevant torso parameters -- leaving the head, limbs, hands, and feet free to perform other actions -- their proof-of-concept system still requires body markers and external motion detectors in order to work.

The next step is to make the torso strategy completely wearable for piloting flying objects. The application range is huge, from flight simulators to piloting drones -- and even, perhaps, planes of the future. A garment that implements the torso strategy into drone control without external motion detectors was developed at EPFL based on the PNAS findings.

Source: Ecole Polytechnique Fédérale de Lausanne

Published August 2018

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