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News

Closed Loop Controller For Linear Stages


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Newport Corporation
: 19 November, 2010  (New Product)
The CONEX-AGP controller from Newport enables fast set up and control from closed-loop positioning control
Closed Loop Controller For Linear Stages
Newport introduces the newest member of the CONEX integrated stage and controller product series. The compact CONEX-AGP controller is preconfigured with an Agilis AG-LS25-27P linear stage that includes an innovative, miniature, built-in, direct-read linear encoder. The CONEX-AG-LS25-27P, which integrates both products, offers quick set up and control with closed-loop positioning performance at an affordable price.

The CONEX-AG-LS25-27P is the first of two specialized stage products to be released that combines an advanced piezo motor linear stage with the low-cost architecture of the CONEX controller family. The ultra-compact controller delivers sub-micron, bi-directional repeatability of 0.3 µm, making it ideal for applications in confined spaces that require integrated, single-axis control. The linear stage is also very compact, capable of 27 mm travel and 0.2 µm metal-insulator-metal (MIM).

“The CONEX-AGP closed-loop algorithm is a simplified version of the typical DC servo loop algorithm, and combined with the stage’s linear encoder, provides a highly repeatable bi-directional system,” notes Beda Espinoza, Newport’s Senior Product Manager, Motion Control. He adds, “We are pleased to announce this highly functional, easy-to-use integrated CONEX system that meets the need for motion control of repetitive tasks with an affordable solution.”

The controller’s versatile deadband function allows the user to modify the closed-loop parameters to program the acceptable deviation from a position, and to hold that position steady. The new controller features the simple and intuitive CONEX GUI, accessible via USB. For added convenience, the USB interface also supplies power to the controller which eliminates the need for additional power supplies and/or cables.
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