|
The E-665 is a bench-top piezo linear amplifier and position servo-controller with integrated high-speed 24-bit computer interface and a high-bandwidth analog interface. It integrates a low-noise piezo amplifier which can output and sink peak currents of 360 mA for low-voltage piezoelectric actuators (-20 to 120 V). Servo-controller versions for position sensing with capacitive or SGS sensors are available.
Closed-Loop Piezo Positioning
PI employs proprietary position sensors for fast response and optimum positioning resolution and stability in the nanometer range and below. For high-end applications, capacitance sensors provide direct and non-contact position feedback (direct metrology). Strain gauge sensors (SGS) are available for cost-effective applications.
The piezo controllers comprise additional circuitry for position sensing and servo-control. In closed-loop position control mode, displacement of the piezo is highly linear and proportional to the analog signal. The servo modifies the amplifier output voltage based on the position sensor signal. Thus, positioning accuracy and repeatability down to the sub-nanometer range is possible, depending on the piezo mechanics and on the sensor type.
High-Resolution Digital Interface
The digital interface includes high-precision 24-bit A/D converters for optimum position stability and resolution and supports fast communication with the host-computer.
Waveform Memory
The built-in wave table can store user-defined datapoints internally. These values can then be output automatically (or under the control of an external signal). Thus, trajectory profiles can be repeated reliably and commanded easily.
Multi-Axis Network for up to 12 Channels
Up to twelve E-665s for capacitive or SGS sensors can be networked and controlled over a single PC interface. The different modules are connected in parallel (not daisy-chained) over the link providing higher data rates than possible with serial links.
Extensive Software Support
The controllers are delivered with Windows operating software.
The extensive command set is based on the hardware-independent General Command Set (GCS), which is common to all current PI controllers for both nano- and micropositioning systems. GCS reduces the programming effort in the face of complex multi-axis positioning tasks or when upgrading a system with a different PI controller.
The GCS commands are available at the controller terminal, in macros and in the form of a universal driver set for LabVIEW (VIs) or Windows dynamic link libraries (DLL).
|
PDF Catalog Datasheet
