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11-26-2010

New Digital Servo Axles with integrated path and force transducers

Controlling with Digital Servo Axles

New Digital Servo Axles

To meet current requirements for a simple configuration of subsystems in engineering, Atos spa, Sesto Calende, Italy, offers its new digital servo axles with integrated path and force transducers, which stand for an electrohydraulic solution. The servo axles work with very little friction loss, while enabling precise motion without slick-slip effects at high transfer speed. High-performance servo-proportional valves with an on-board electronic unit safeguard exact hydraulic control and are fail-safe. Integrated digital amplifier and axle control units laid out for electrohydraulic motion control by specially developed algorithms further improve performance.

According to supplier information, the digital servo cylinders feature an automation architecture based on a decentralized intelligent field bus interface – thus enabling direct integration into an existing communication network (CANopen or Profibus-DP). Two modes of operation are essential to the system: one performs closed-loop control of a motion in real-time, corresponding to the external analogue or field bus signals. The other one conducts closed-loop control of a previously programmed path-time motion cycle. The machine’s electronic control unit only has to provide the digital signals (start/stop/switch) to clock the servo axles with the machine’s operation cycle.

New algorithms were also developed, making it possible to link force to path control. One unit is enough to control both phases of the electrohydraulic axles. Corresponding to the feedback signals of path or pressure transducers, or load cell, the axle control unit automatically defines which type of control will be in charge. The software developed by Atos, with its intuitive user interface, enables easy setting and programming of the servo axles, to thus adjust their motion profiles to the specific requirements of the application.

Company profile

ATOS spa

via alla Piana, 57
IT 21018 SESTO CALENDE VA
Tel.: +39 0331 922078
Fax: +39 0331 920005

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