January 09, 2018 Volume 14 Issue 01

Motion Control News & Products

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New planetary PMDC gearmotors from Bodine

Bodine Electric Company introduces the new type 24A4-60P planetary gearmotor. This integral gearmotor combines Bodine's high-performance type 24A PMDC motor with the all-new 60P (60-mm) planetary gearhead. It is ideal for applications that require higher torque than conventional helical/spur gearheads of a similar size can provide, and where a very low-backlash gearhead is not required. Typical applications include conveyors, pumps, packaging, industrial automation, and a wide range of solar- or battery-powered equipment.
Click here to learn more.


Extreme force electric linear actuator controls lumber drying

The lumber processing industry demands rugged, strong, reliable, and accurate equipment in all its operations. Conditions can be harsh. Hydraulic cylinders have been the go-to, but they have limitations, such as inconsistent control, leaks, temperature sensitivity, maintenance requirements, and lack of feedback. Now there are electric rod actuators powered by roller screws that can meet the requirements of these high-force applications.
Read the Tolomatic blog.


Medium-load hexapod 6-axis motion platform

With the usability of 6-axis hexapods increasing in research and industry applications, PI introduces a new medium-load 6-axis precision motion platform, the H-825 hexapod. The H-825 provides a self-locking load capacity up to 30 kg (66 lb). The motion range is up to 55 mm (linear) and up to 38 degrees (rotation). High system precision is guaranteed by absolute encoders and an actuator resolution of 8 nanometers -- with excellent position repeatability of +/-0.1 µm and +/-2 µrad, respectively. The parallel-kinematic design of the hexapod makes it smaller and stiffer than traditional 6-axis positioning systems while providing a higher dynamic range. Features long-lifetime brushless servo motors.
>Read technical articles and applications of PI hexapods
>Watch Hexapod System Videos
>Specifications, Datasheet, More Information


Wheel drive assemblies for electric vehicles

WheelMax Steering Drives from Allied Motion Technologies are fully integrated, electrically powered traction wheels with on-board steering systems for electric vehicles. Each WheelMax Steering Drive combines a traction wheel with tire, epicyclic gearbox, robust steering gear and bearing system, and two rugged PMDC brush motors, one for traction and one for steering power. The complete assembly is compact, easy to mount, and requires little to no maintenance. WheelMax Steering Drives handle loads up to 227 kg (500 lb) and provide 14 Nm (120 lb-in.) continuous torque at speeds up to 5 km/hr (3 mph). Applications include AGVs, autonomous robotic material handlers, pushers and tuggers, powered utility carts, and hospital patient handlers, among many others.
Click here to learn more.


Micro Solutions: Myoelectric robotic prosthesis hand

The Bebionic myoelectric hand prosthesis was recently developed to help with daily life challenges. Powerful and compact FAULHABER dc motors ensure that the prosthesis can grip without any problems, quickly and firmly, and maintain a constant gripping force. Two electrodes integrated into the prosthesis shaft detect the myoelectric signals and forward them to the control electronics. These signals are amplified and used to activate the 5 small electric motors.
Read the full article.


New frameless brushless servo motor kits

The new frameless motor kits from Maxon consist of only a rotor and stator -- no bearings or motor shaft. With outer diameters of only 43 mm to 90 mm, these pancake servo motor kits are extremely compact. Available in size ranges from 30 W to 260 W, these EC (electronically commutated) frameless slotted motors feature low-voltage windings, high pole pair count, and are shipped as BLDC motor kits with the rotor and stator delivered separately without bearings and motor shaft. The flat design, high torque output, and hollow-shaft construction provide plenty of space for cable glands, allowing for a high level of integration into OEM applications such as collaborative and mobile robots, AGVs, exoskeletons, and embedded robotic applications.
Click here to learn more.


New DENSO robot product catalog

DENSO Robotics -- the world's largest manufacturer and user of small assembly robots -- has announced its new product catalog featuring a wide range of compact, high-speed industrial robots that have reaches of 350 mm to 1,300 mm, payload capacities as high as 20 kg, and repeatability to within +/-0.015 mm. The 52-page publication, which is offered in an interactive online version or as a download, features detailed descriptions, specifications, and schematics of DENSO’s entire lineup of four-axis SCARA and five- and six-axis articulated robots, robot controllers, and programming software.
Click here to learn more.


New precision linear motor stage family with magnetic direct drive and absolute encoders

Motion and nanoposi-tioning industry leader PI further expands its PIMag series of high-dynamics linear motor stages with a family of 18, the V-508 -- a new series of compact linear positioning stages with high-force 3-phase linear motors and crossed roller guides. This line features high velocity, high duty cycle, and three travel ranges. A variety of incremental and absolute measuring linear encoders are available. PI’s ultra-precise linear motor stages are well-suited for industry and research. Applications include metrology, testing, positioning, scanning, precision automation, micro-assembly, biotechnology, delay-lines, laser beam control, optics, lens testing, and photonics alignment.
Specifications, datasheet, more information >
Read tech article, "Performance of Direct-Drive Linear Motor Stages in Precision Positioning Applications" >


Flexible servo drive system for demanding geared motor applications

Siemens has expanded its extensive drive portfolio for servo applications to include the Simotics S-1FG1 servo geared motors, which are designed for use with the Sinamics S120 drive system. Sinamics S120 drives and Simotics S-1FG1 servo geared motors are an integral component of Siemens Totally Integrated Automation (TIA), which reduces engineering time and costs. The units have electronic rating plates, and the motors are connected via the Drive-Cliq system interface, so the system can be brought online quickly. The engineering of the Simotics S-1FG1 servo geared motor includes high efficiency and low torsional backlash for precise, dynamic motion sequences and is available in the following versions: helical, parallel shaft, bevel and helical worm gearboxes with up to 25 transmission ratios.
Click here to learn more.


First 7-axis motion and pressure sensor

TDK has announced the availability of the InvenSense ICM-20789 MEMS 7-axis integrated inertial device, combining a 3-axis gyroscope, 3-axis accelerometer, and an ultra low-noise MEMS capacitive barometric pressure sensor. The ICM-20789 features a single small footprint, with the industry’s lowest pressure noise of 0.4Pa RMS and excellent temperature stability with a temp coefficient of +/-0.5 Pa/°C. Applications include: drones and flying toys; smart watches, wearables, activity monitoring; motion-based gaming controllers; virtual reality headsets and controllers; and indoor and outdoor navigation.
Click here to learn more.


Motor Tech: UAV camera stabilization with brushless motors

Today, recon is dominated by unmanned aerial vehicles (UAVs) and drones due largely to concerns for pilots’ safety and costs. However, photos and videos obtained from UAVs are only useful if they are crisp and clear, which requires both precise focusing and extreme stabilization of the camera system. Compact and powerful FAULHABER brushless DC motors from MICROMO were selected to get the job done.
Read the full article.


Mobility Tech Ideas: Scissor lift for UTVs

The UTX Scissor lift from Innovative Equipment is designed to be easily fitted and removed from almost any utility vehicle (UTV) in approximately 3 minutes without any heavy lifting. It provides the user with a working height of 18 to 19 ft on nearly any terrain. It can be leveled on slopes up to 12 deg. It has a lifting capacity of 500 to 600 lb and enables users to take a scissor lift "where no scissor lift has gone before." Stability has been tested to five times the ANSI requirements. It also has safety features that will not allow it to be used in unsafe conditions.
See it in action.


Become a robot programmer in 87 minutes!

Learning how to set up and program a collaborative robot -- or cobot -- no longer depends on real-life access to a robot or a training class. Now everybody with a desire to learn the concepts of cobots can log in to the Universal Robots Academy and get the introduction necessary to master basic programming skills. Become a master of the cobots! (That's a pretty sweet title.)
Click here to learn more.


Multi-axis robotic controller

Aerotech’s HEX RC is a 6-axis motion controller ideal for controlling robotic systems like hexapods. It is 4U rack-mountable and compatible with the Automation 3200 (A3200) motion platform. A high-performance processor provides the intense computing power needed to run up to 32 axes, perform complex, synchronized motion trajectories, manipulate I/O, and collect data at high speeds. This unit features 6 axes of drives capable of controlling any combination of brush, brushless, or stepper motors (both current loop and servo loop closures). An optional 6-axis jog pendant permits easy, manual control of the positioning system.
Click here to learn more.


Single-rail positioning stage (H-gantry)

H2W Technologies’ latest single-rail positioning stage design is an open-frame XY positioning system. It has two bottom parallel axes with one cross axis connecting the two (H-gantry). Each linear axis uses H2W’s brushless linear motors (BLDM-B04). Each has a total stroke length of 25.67 in. (652 mm) and can generate 6.2 lb (27.8 N) of continuous force and 18.7 lb (83.3 N) of peak force, or a combined 12.4 lb (55.6 N) continuous force and 37.4 lb (166.6 N) peak force on the bottom axis. The non-contact 1-micron resolution encoders allow for precise positioning. The moving tables are guided by a precision recirculating linear ball bearing system. Additional options include a home positioning sensor, end-of-travel-sensors, and custom mounting holes.
Click here to learn more.
Watch this stage in action.


World's most powerful jet engine is being turned into 65-MW power plant

The GE90 is the most powerful jet engine in the world. This engine, attached to a GE Aviation's Boeing 747 flying test bed, makes the rocks beyond the runway fly as the plane is revving up to take off from GE's Flight Test Operations Center in Victorville, CA, located in the Mojave Desert. [GIF credit: GE Aviation].

 

 

 

 

By Tomas Kellner, GE Reports

GE is taking the world's largest jet engine and turning it into a power plant. The machine's beating heart comes from the GE90-115B, which is the largest and most powerful jet engine, capable of producing 127,900 lb of thrust, according to Guinness World Records. The electricity generator, which GE calls LM9000, will be able to generate a whopping 65 megawatts (MW) -- enough to supply 6,500 homes -- and reach full power in 10 minutes. "We picked the best technology across GE and built the biggest and most powerful aeroderivative engine ever made," says GE Oil & Gas' Maurizio Ciofini, the engineering director of the project.

The LM9000 shares the GE90-115B engine's core technology, but also includes 3D-printed parts. [Image credit: GE Oil & Gas]

 

 

The idea of using jet engines to produce electricity has been around for a while. The word "aeroderivative" is a nod to the machine's heritage, meaning that the designers borrowed technology originally developed by their aerospace colleagues at GE Aviation.

The technology is also a good example of what GE calls the GE Store -- the system of sharing technology, research, and expertise among its many businesses. Today, aeroderivatives power towns and factories but also oil platforms and ships.

Engineers built the first generation of GE aeroderivatives, called LM100, from a helicopter engine in the late 1950s. The next machine, the LM1500, had inside components from GE's first supersonic engine -- the J79 -- and generated more than 10,000 kilowatts. GE Power kept improving on the design, building aeroderivatives from the CF6 engine, which powers Air Force One and many other Boeing 747s, as well the F404 engine used by F/A-18 Hornet and F-117 Nighthawk military jets. Aeroderivatives based on these engines generate electricity in remote corners of the world and also power the world's fastest passenger ferry.

But the LM9000 takes the technology to a new level. GE's Oil & Gas business developed the machine for powering massive liquefied natural gas (LNG) plants. "An LNG plant is like a giant refrigerator, but instead of making ice and keeping your food cool, it turns natural gas into liquid by bringing the temperature down to minus 160 degrees Celsius," says Tayo Montgomery, customer applications engineer at GE Oil & Gas.

He says the LM9000 is so powerful it enables LNG plant operators to restart production without first draining the refrigerant from the entire plant. "It has enough power and starting torque than you can just get up and go," Montgomery says.

The LM9000 can generate 65 MW. [Image credit: GE Oil & Gas]

 

 

The GE90 engines have clocked 41 million flight hours since they first entered service in the mid-1990s and have departure reliability of 99.98 percent, according to GE. They are also very light and relatively easy to maintain. "It can take as long as 24 days to do a major maintenance of gas turbines typically installed in older LNG plants," Montgomery says. "But we can replace the entire LM9000 turbine in 24 hours."

The team made other adaptations to optimize the LM9000 for industrial applications. They switched the machine's combustion system from jet fuel to natural gas. The machine also will have a 3D-printed combustor. Its innovative design will enable the machine to meet low-emission requirements around the world.

Under the hood, engineering geeks will search in vain for a gear box. That's because the design utilizes a "free power" turbine architecture that enables the machine to operate efficiently over a wide range of power and speed conditions.

As a result, "the LM9000 will provide the highest availability with the lowest cost of ownership for LNG applications," says Preetham Balasubramanyam, the product manager for the new machine at GE Oil & Gas. He says the LM9000 generates 20 percent more power, can go 50 percent longer without service, and emits 40 percent less NOx emissions than existing models in the class. He says that the combination could help LNG plants lower production costs by 20 percent.

The first turbine is slated to enter service in the first half of 2019.

Read more GE Reports at www.gereports.com.

Published February 2017

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