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CAN interface for piezo amplifiers

Piezosystem Jena has presented a CAN interface for its piezo controllers/amplifiers. The data transfer via CAN reduces the reaction time of piezo actuators to under one millisecond – ten times faster.

The 30DV50 is one of the digital amplifiers that can be outfitted with the CAN interface (Photo: Piezosystem)

Piezosystem Jena, a developer and manufacturer of piezo actuators, stages, and controllers for nanopositioning, is introducing a CAN interface for its digital piezo controllers. The CAN network allows for much faster reaction times of piezo actuators: below one millisecond. “Industry customers are constantly asking for faster and faster reaction times, especially when using piezo actuators in highly automated production processes”, said Dr. Bernt Götz, CEO of Piezosystem Jena, “With the CAN bus interface, we can now offer a solution that drastically increases the reaction times of our actuators.”

Achieving shorter reaction times for piezo actuators with more sophisticated controlling methods is an aim of the industry. Especially in automation engineering, shorter reaction times equal a higher output over the same amount of time. How fast an actuator reacts depends on the methods of controlling. The communication between a computer and the piezo controller is limited by the exchange of data packets. This exchange can result in delays between 2 and 16 milliseconds. The CAN interface allows for a faster delivery of digital positioning values from the computer to the piezo controller. Reaction times of 0,25 ms can be guaranteed, which is around ten times faster than before.

The CAN interface is available for Piezosystem Jenas’ digital amplifiers 30DV50 and 30DV300. Upon request, the piezo controllers d-Drive and d-Drive Pro can also be outfitted with this interface.

Piezosystem Jena: Manufacturer of piezoelectric solutions

Piezosystem Jena is a developer and manufacturer of piezoelectric solutions for micro- and nanopositioning. Its actuators and stages offer sub-nanometer resolution, can generate high forces, and can position themselves in microseconds. The company is headquartered in Jena, Germany. Its Piezocomposite product line offers a variety of actuators able to generate high forces (up to 50 kN) and suitable for uses in material testing, vibration generation, and geological ground investigations.

About piezo technology and piezo actuators

Piezo ceramics change form once a current is applied (inversive piezo effect). This change in form and the corresponding mechanical movement take place in the micro- and nanometer range. Therefore, piezo ceramics are suitable for nanopositioning (e.g. in microscopes, semiconductor lithography, or beam alignment of lasers). Today, piezo actuators are key components in micro-, nano-, and sub-nanopositioning. For many applications they are the only possible technical solution. They offer nearly unlimited resolution (only limited by the electrical noise of a controller unit), generate high forces, and have fast reaction times.


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