Precision Motion Control Closed-loop PI piezo controllers feature: ■ ■ Noise approx. 1 mV (RMS value) Notch filter for higher bandwidth Output voltages adapted to various piezo actuators and piezo drives PI offers the world’s largest portfolio of precision motion technologies for positioning in the accuracy range from one micrometer down to below one nanometer. Fast settling or extremely smooth low speed motion, high positional stability, high resolution and high dynamics – the requirements placed on piezo mechanisms vary greatly and need drivers and controllers with a high degree of flexibility. PI provides a broad spectrum of piezo electronics from versatile general purpose controllers to highly specialized devices. Units come in different levels of integration from customized OEM boards and a plug & play bench-top devices to modular controllers to scalable to almost any number of axes. Excellent long-term stability Flexible Controllers to Match the Mechanics Positioning with sub-nanometer accuracy OEM piezo controller card. The piezo control voltages are generated on-board, operation only requires a stabilized voltage between 12 and 24 V High linearity Analog interfaces for fast direct commanding in real time Short-circuit strength Piezo mechanisms directly respond to the smallest change in the drive voltage with a change in displacement. Response times of a few microseconds are possible, depending on the mechanical design and the performance of the piezo controller. In static operation, i.e. when a certain position is held, the stability of the power supply is also decisive because piezo actuators react even to the minutest change in voltage with a motion. Therefore, noise or drifting must be avoided as much as possible. This high-performance piezo controller delivers peak power of up to 6 kW. A digital interface module offers extended functionalities, such as data reco recorder and function g

Slew Rate The performance of a piezo mechanism not only depends on the mechanical design but also largely on the capabilities of its controller. PI's low-noise, drift-free piezo amplifiers ensure optimum stability and resolution. High bandwidth allows for rapid response times and high scanning frequencies. Closed-loop position control compares the target position with the information provided by the position feedback sensor (actual value) and automatically compensates for nonlinearity, hysteresis and drift. The servo-control part of most analog piezo controllers manufactured by PI is identical:...

Standardized Measurements Logs: The Good Feeling When Your Expectations Are Met Nanopositioning systems are an essential but costly component in applications. PI therefore individually tests and optimizes the static and dynamic parameters of every system. The measurement log is delivered with the system. The customer can thus retrace the performance of the system at delivery and which system components belong together at any time. PI continually invests in improving the testing methods and testing equipment in order to be able to supply systems of even higher quality. Closed-loop nanopositioning...

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