Press Release Webinar Part 3
Aerotech Highlights Key Role of Sensor Resolution and Sample Time When Tuning Servo Systems
Fürth, Germany / Basingstoke, UK, 29thMarch 2021 - The importance of sensor resolution and sample time when tuning servo systems has been highlighted in the latest webinar from international motion control and positioning specialist Aerotech.
The webinar is the third in a specialist series aimed at servo system users across a broad spectrum of industry sectors. It focuses on the role of these key digital control elements when a user is seeking to optimise the performance of their servo systems.
Dr Joseph Profeta, Director - Control Systems Group at Aerotech, explained: "Sampling often uses an Analogue to Digital Convertor (A/D), with the signal sampled at a regular interval. However, sampling can introduce a delay in the control loop, resulting in phase loss. A higher frequency can also ‘alias' to a lower frequency. This inevitably produces misleading results and means that an anti-aliasing filter will be needed."
He continued: "Various types of encoders are available - TTL, incremental, absolute and amplified sine. However, whatever type is in place, its performance will be largely determined by how well it has been tuned.
"Resolution will be key in determining accuracy of tuning, and should be greater than the final accuracy required - indeed, higher resolution will generally yield greater improvement in accuracy than a higher sample rate. Ultimately, when it comes to sample rate, faster is almost always better while with resolution, more is almost always better."
The webinar discusses all of these issues in depth and provides advice for users on how to develop a regime to get the best out of their servo systems, whatever the application in which they are being used.
For further information and to access the webinar, visit:
Part 1, How to Tune Servo Systems: The Basics
Part 2, How to Tune Servo Systems: Tuning for Optimal Performance
Part 3, How to Tune Servo Systems: Sensor Resolution & Sample Time
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Aerotech -Dedicated to the Science of Motion
Aerotech Inc., based in Pittsburgh, USA, is a privately held, family-owned company founded in 1970 by Stephen J. Botos with the vision of advancing the science of motion control and positioning systems for customers in industry, science and research. As a family business, the owners continue to place great value on open and trusting relationships with customers, business partners and employees. In Germany, the mid-sized company is represented by its own subsidiary, Aerotech GmbH, based in Fürth. In addition to sales and service activities, the Fürth facility handles customised assembly of positioning systems for the European market. The company's innovative and high-precision motion solutions meet all critical requirements necessary for today's demanding applications. They are used wherever high throughput is required - including medical and life science applications, semiconductor and flat screen production, photonics, automotive, data storage, laser processing, aerospace and electronics manufacturing, as well as inspection, testing and assembly.
With advanced analysis and diagnostic capabilities, Aerotech provides world-class technical support and service. If a standard product is not suitable for an individual application, Aerotech can supply special motion components and systems based on its many years of expertise and experience. Manufacturing capacity for customer-specific applications is supplemented by experience in supplying systems for vacuum and clean room operation.
Aerotech has full-service subsidiaries in Germany (Fürth), United Kingdom (Ramsdell), China (Shanghai) and Taiwan (Taipei). Aerotech currently employs around 500 people worldwide.http://www.aerotech.com
The Old Brick Kiln, Ramsdell
Tadley, Hampshire, RG26 5PR U.K.
T: +44 1256 855055
Ref: AER007A