Shaft angle rotary sensor gives 360 degree absolute position feedback

Piher International PST-360 is a rotary sensor designed to be more smaller and compact in a through-hole design.

08/02/2011


Piher announced the availability of a new shaft angle rotary sensor - the PST-360 Through-Hole Position Sensor. The PST-360 combines a through-shaft design with 360º absolute position feedback in an extremely thin package.

Key features include a through-hole design where the sensor fits over existing shaft and bearing assemblies. The new sensor reportedly incorporates a proprietary ring magnet with a fully sealed Hall ASIC as the sensor element. This combination is truly non-contacting and does not rely on gears or other interfacing parts and therefore matches the durability specifications of the final application. The proprietary design provides a streamlined sensor with only one moving part along with programmable electronics designed for harsh environments. The result is an exceptionally small form factor, cost-effective product.

Measuring just 9.8 mm thick with a body diameter of 37 mm and 50.0 mm mounting hole spacing, engineers can now integrate a fully featured rotary sensor directly on their existing shafts without the packaging issues that typically accompany encoders or other through shaft sensing devices. The standard model features a rotor with a 14.05 mm inside diameter (double flatted) shaft design. Other custom rotor configurations are available from Piher to adapt existing OEM shafts to the standard PST-360 Sensor.

The PST-360 is a reportedly robust design with fully encapsulated electronics surrounding the durable ring magnet, allowing for use in high humidity environments. Unlike optical encoders, it has no sensitivity to dust or dirt and can tolerant high vibration cycles as the ring magnet never comes into contact with the sensing electronics.

The new device offers electrical angles up to 360° with no dead band and linearity error as low as ±0.5%. Rated for use at -40 C to +85 C, optional models are rated up to 150 C. The sensor can be programmed with full scale output with angles as narrow as 20 degrees. The device supports most common electrical signal outputs with minimal investment. Optional outputs include: Analog, PWM (12 bit) or Serial Protocol (SPI) at 14 bits and includes a second output channel to provide a programmable switch signal. Redundant versions are available with duplex, triplex and quad redundant versions all within the same package size.

With its integrated redundancy, the new sensor is ideally suited for use in a wide range of off-highway, construction and agriculture equipment drive-by-wire applications. It can be easily adapted to fit marine outboard steering and throttle control, robotic controls, material handling, electronic braking systems, automation equipment and medical devices.

"The PST-360 provides a breakthrough in terms of simplicity, size, cost and robustness, especially when compared to existing absolute angle sensors and encoders," explained Paul Cain, Piher International's General Manager for North America. "The propriety Hall design incorporates a rotating ring magnet as the sensing source, allowing for the smaller package and simplified electronics that are easily integrated into the final customer's product"

www.piher.net

Piher International Corporation

www.meggitt.com

Meggitt PLC

- Edited by Chris Vavra, Control Engineering, www.controleng.com



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
Your leaks start here: Take a disciplined approach with your hydraulic system; U.S. presence at Hannover Messe a rousing success
Hannover Messe 2016: Taking hold of the future - Partner Country status spotlights U.S. manufacturing; Honoring manufacturing excellence: The 2015 Product of the Year Winners
Inside IIoT: How technology, strategy can improve your operation; Dry media or web scrubber?; Six steps to design a PM program
Getting to the bottom of subsea repairs: Older pipelines need more attention, and operators need a repair strategy; OTC preview; Offshore production difficult - and crucial
Digital oilfields: Integrated HMI/SCADA systems enable smarter data acquisition; Real-world impact of simulation; Electric actuator technology prospers in production fields
Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors
Warehouse winter comfort: The HTHV solution; Cooling with natural gas; Plastics industry booming
Managing automation upgrades, retrofits; Making technical, business sense; Ensuring network cyber security
Designing generator systems; Using online commissioning tools; Selective coordination best practices

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role that compressed air plays in manufacturing plants.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
This article collection contains several articles on strategic maintenance and understanding all the parts of your plant.
click me