November 26, 2019 Volume 15 Issue 45

Motion Control News & Products

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Smart actuators deliver on the promise of Industry 4.0

As Industry 4.0 initiatives bring more and more industrial axes of motion into the realm of automation, the need for cost-effective control across them grows as well. Consider, for example, industrial tasks such as raising or lowering a conveyor to handle cartons of various sizes. If such adjustments are needed only a few times a day, automation with conventional technology would be difficult to justify. Automating such intermittent operations with pneumatic cylinders, for instance, would require costly infrastructure and elevated maintenance costs while providing only limited control capability. Today's smart electromechanical actuators, however, enable designers to automate intermittent operations affordably by embedding functionality that has previously required an external infrastructure.
Read the Thomson article.


New hygienic integrated electric actuators provide modular clean-in-place solutions

The Tolomatic IMA-S stainless-steel integrated servo actuator is designed for the most demanding food and beverage processing applications, eliminating harborage points and preventing bacterial growth. The 316 stainless-steel construction provides excellent corrosion resistance and withstands high pressure, high temperature, and caustic washdown. It meets clean-in-place requirements, allowing machine designers to achieve open machine designs and eliminate shrouding required to house standard actuators. This series offers forces up to 11.1 kN (2,500 lbf), stroke lengths up to 450 mm (18 in.), and options for planetary roller screws or ball screws. A proprietary lubrication feature helps extend service life.
Learn more.


Engineer's Toolbox: Three steps to mount a step motor

Jeff Kordik, chief technical officer, Applied Motion Products, runs through the basic steps to mount a step motor and also covers key mounting dimensions. He provides his pro tips along the way and also gives tips for determining proper step motor torque as a sidebar. Lots of good info here.
Read the full article.


Mini linear stages for precision automation

Positioning systems that not only work very precisely but are also suitable for higher loads while requiring little installation space are sought after in medical tech, biomedical engineering, or when aligning components in the laser and photonics industries; in micro assembly; and even when handling parts in industrial automation. With the L-505 series, PI (Physik Instrumente) now has compact linear stages in its portfolio that can be loaded to 30 N and are available in two space-saving dimensions: a 36-mm narrow, elongated version with direct fixed drive and a 60-mm-wide, shorter version with folded drivetrain. These compact linear stages are offered either with a DC motor or a stepper motor and with or without gearhead.
Learn more.


Motor sizing basics: Balancing torque, speed, and inertia for optimal application performance

Optimizing motor selection for motion control applications can have significant performance, cost, and maintenance benefits. Select too large a motor, and you could overwhelm your actuators and incur unnecessary equipment and energy costs. Select too small a motor, and you may not achieve the torque and speed you need for effective performance. Andrew Skidmore, senior project engineer at Thomson Industries, covers what you need to know to make the proper selection for your application.
Read the Thompson article.


Slip rings for demanding environments

The Orbex Group now offers IP65-rated slip rings for reliable use in demanding industrial or outdoor applications. Constructed from stainless steel, the rugged 200 series resists shock, vibration, and corrosion in salty or washdown environments. It features a wide temp range (-40 to 80 C) and the longest service life of any Orbex slip rings -- up to 80 million revolutions. Units incorporate proprietary channeled brush technology, which creates multiple contact points and reduces contact forces to minimize wear in food processing, packaging, wind turbines, marine cable reels, downhole inspection equipment, and other demanding applications. Mini (300 series) and through-bore (series 500) slip rings also available.
Learn more.


Multi-axis gimbal system for defense

Cobham Advanced Electronic Solutions has just introduced a new multi-axis gimbal system for military applications such as counter unmanned aerial vehicles (UAV) and air defense operations that offers a great combination of reliability, precision, and affordability. The SPS-1000 is a next-gen sensor positioning system (SPS) that accurately acquires, tracks, and points a variety of sensor payloads in harsh land, sea, and airborne environments. Two key benefits of the modular design approach are integral field-replaceable control electronics (which eliminates all external cables without any sacrifice in performance) and a reconfigurable design allowing for utmost payload flexibility.
Learn more.


Linear motion guide with built-in encoder

New from THK, the Type SHS-LE integrates the global standard THK Type SHS LM Guide with a THK linear encoder (linear position sensor). This combined model allows for compact machine designs that require less assembly time. THK's Type SHS Caged Ball LM Guide performs with high speed and precision. Each row of balls is arranged at a contact angle of 45°, enabling the SHS to be used in all directions. Its patented THK Caged Technology employs a synthetic resin cage with a patented curvature that cradles each ball and separates it from the next. The spaces between the rolling elements retain grease and act as a lubrication system for long-term, maintenance-free operation. Other benefits include increased speed and accuracy, decreased noise levels, low dust generation, and long life.
Learn more.


Compact hydraulic/pneumatic position sensors

Novotechnik's TM1 Series of position sensors are designed for use in hydraulic and pneumatic cylinders -- especially in tight-space applications. They are based on magnetostrictive technology and are available in screw flange or plug-in flange models. A ring-shaped magnetic marker moves up and down the sensor's shaft for touchless operation. Specs include stroke lengths from 50 to 2,000 mm (1.9 to 78.7 in.) and accuracy to +/-0.04 percent.
Learn more.


6 latest trends in direct drive motor technology

Direct drive motors have always been seen as a technological step up from standard transmission devices, with torque and linear motors being seen as the higher end alternative to gearboxes and ball screws. Although the base design has been around for a long time, motor makers are still working on fine-tuning different aspects to increase the overall performance and quality of the product. Here are six advancements that direct drive motor builders are taking to ensure the customer gets the most out of their capabilities. By Brian Zlotorzycki, Business Development Specialist, ETEL Motors
Read the full article.


Small DC motors for lab spectrophotometry

The DeNovix team needed a motion solution for their spectro-photometer application which called for intermittent short, quick motions with micron-level accuracy. After research and testing, they chose FAULHABER small DC motors configured with a high-resolution encoder and an all-plastic planetary gearhead to successfully bring their product to market.
Learn more.


How to select gearmotors for conveyor applications

If you need to find a gearmotor for your belt-driven conveyor application, Bodine Electric has you covered. This informative and thorough post provides step-by-step instructions for sizing and selection -- complete with examples. Learn about reflected acceleration torque, reflected breakaway torque, and a whole lot more. Also learn the basic set of questions to answer to determine what type of motor will work best.
Read the Bodine blog.


Marathon stainless steel and jet pump motors from AutomationDirect

New Marathon Powerwash SXT washdown duty motors are designed for use in food and beverage processing and other washdown environments. The all stainless steel, totally enclosed motors are available in single and three-phase. C-face with rigid base (footed) and C-face footless mounting options are available. Jet pump motors are commonly used in commercial and industrial water treatment and processing applications to power centrifugal and hydraulic pumps. Marathon jet pump motors are available in single and three-phase, and in TEFC and Open Drip Proof (ODP) designs. The ODP design allows air to circulate through the motor windings for cooling, but prevents drops of liquid from falling into the motor. The increased air flow means lower operating temperatures and increased efficiency when compared to TEFC or TENV motors.
Learn more.


Emergency braking in power outages, long holding power

Miki Pulley's BXW Spring Actuated Electromag-netic Brakes utilize internal compression springs to provide power-off, fail-safe braking. The primary moving part in this robust but simple brake design is the armature plate. When actuated, the brake compression springs push the armature plate into the friction disc when power is disengaged. This feature provides fail-safe braking and allows the brake to maintain position over long periods of time, thus preventing machinery from "coasting" when powered off. Brakes are ideal for small and large applications, including use with servo motors. Additional features: quiet operation, high holding torque, space savings, long service life, stable and reliable braking power, and manual release mechanisms.
Learn more.


First subsea actuator to have advantages of both electro-mechanical and electro-hydraulic systems

The Subsea Valve Actuator (SVA) from Rexroth is an electro-mechanical actuator with hydrostatic drive designed to complete the range of traditional hydraulic and all-electric subsea actuators for subsea control and production systems. It achieves the same safety performance as hydraulic actuators, but with much better reliability. It also provides a simple electric interface similar to those in all-electric actuators (without umbilicals for hydraulic fluid power). The SVA is compatible with Industry 4.0 technology and includes integrated sensors for monitoring position, pressure, temperature, and more. Operates up to a depth of 3,000 m.
Learn more.


Sikorsky flies Black Hawk helicopter with optionally piloted fly-by-wire flight control kit

A technology kit developed by Sikorsky was used for the first time this past spring to operate a Black Hawk helicopter with full-authority, fly-by-wire flight controls.

The May 29 flight marked the official start to the flight test program for the soon-to-be optionally piloted aircraft. Follow-on flight testing included envelope expansion throughout the summer, and is projected to lead to fully autonomous flight (zero pilots) in 2020.

A Black Hawk equipped with optionally piloted vehicle tech made its first flight at Sikorsky's West Palm Beach, FL, facility on May 29, 2019.

 

 

This is the first full-authority, fly-by-wire retrofit kit developed by Sikorsky that has completely removed mechanical flight controls from the aircraft.

Through DARPA's Aircrew Labor In-Cockpit Automation System (ALIAS) program, Sikorsky is developing an optionally piloted vehicle (OPV) approach it describes as "pilot-directed autonomy" to give operators the confidence to fly aircraft safely, reliably, and affordably in optimally piloted modes, which enable flight with two, one, or zero crew members. The program aims to improve operator "decision aiding" for manned operations while also enabling both unmanned and reduced crew operations.

Sikorsky calls this systems intelligence platform its MATRIX Technology, which combines software and hardware components, and has been demonstrating it on a modified S-76B called the Sikorsky Autonomy Research Aircraft (SARA). The aircraft, which has been used in testing for this technology since 2013, has more than 300 hours of autonomous flight.


VIDEO: Optimally piloted Black Hawk advances through flight test program. [Lockheed Martin]

Sikorsky announced earlier in March that its S-92 helicopter fleet update will include the introduction of phase-one MATRIX Technology that will bring advanced computing power to the platform. This foundation enables adoption of autonomous landing technology.

"This technology brings a whole new dimension of safety, reliability, and capability to existing and future helicopters and to those who depend on them to complete their missions," said Chris Van Buiten, vice president, Sikorsky Innovations. "We're excited to be transforming a once mechanically controlled aircraft into one with fly-by-wire controls."

Van Buiten added that the Black Hawk first flight demonstrated a next step in making optionally piloted aircraft of this level a reality.

Source: Lockheed Martin (Sikorsky is a Lockheed Martin company)

Published November 2019

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