Product News: Mechanical Power Transmission, Controls & Controllers

Servo Drives compensate for errors in advance.

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Press Release Summary:

May 15, 2014 - ACOPOS servo drives are available with repetitive control, which improves accuracy of production processes with stationary disturbances by using predictive following error compensation. Embedded in standard speed control loop, repetitive control adjusts torque setpoint to reduce periodic portions in speed or following error. By undergoing constant learning process, algorithm ensures changes to load profile do not have any effect on drive.

B&R Industrial Automation Corp.

1250 Northmeadow Parkway, Roswell, GA, 30076, USA

Original Press Release

Compensating for Errors in Advance

Press release date: May 7, 2014

B&R servo drives detect and correct following error automatically

B&R continues to expand the functionality of its ACOPOS line of servo drives. Repetitive control – B&R's latest advancement – considerably improves the accuracy of production processes with stationary disturbances by using predictive following error compensation. The performance of the machine or system is considerably increased without a great deal of additional effort. Repetitive control is available for all ACOPOS models simply by installing a firmware update.

When using position-controlled drives with constant speed, mechanical conditions can cause stationary disturbing torque fluctuations, which often results in following error localized to a certain area. Optimizing the drive controller configuration can minimize these lag errors but will not be able to completely prevent the disturbance.

Intelligent algorithm
Embedded in the standard speed control loop for the ACOPOS drive family, repetitive control adjusts the torque setpoint of the drive in a way that drastically reduces the periodic portions in the speed or following error. The algorithm undergoes a constant learning process so that changes to the load profile – caused by wear, for example – have no effect whatsoever on the drive due to predictive compensation for disturbances.

Available as an add-on to the standard control procedure, active disturbance suppression is easy and intuitive to configure, not even requiring a mathematical model thanks to the extremely adaptive nature of the algorithm.
 
B&R company profile
B&R is the world’s largest and most successful private company in the area of automation equipment manufacturing. The motto “Perfection in Automation” has provided the foundation for the company since B&R was founded in 1979. Today, B&R employs 2,500 employees worldwide and has an exceptional global presence with 175 sales offices in 75 countries.

As a global leader in industrial automation, B&R combines state-of-the-art technology with advanced engineering to provide customers in virtually every industry with complete solutions for machine and process automation, motion control, HMI and integrated safety technology. With industrial fieldbus communication standards like POWERLINK and openSAFETY as well as the powerful Automation Studio software development environment, B&R is constantly redefining the future of automation engineering.

B&R Industrial Automation, Inc. North America, based in Atlanta, GA, has been working closely with its customers since 1987. Since then, B&R North America has continuously grown as a sales and support organization through both direct sales offices and B&R’s unique Automation Partner distribution network. Today, B&R North America has a network of 25 offices throughout the USA and Canada and is there for its customers locally.   For more information, please visit www.br-automation.com.

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