The NV120/1 and NV120/1 CLE piezo amplifiers are engineered to meet the highest standards of accuracy and dynamics for high-resolution piezoelectric actuators.
These amplifiers provide a permanent output current of 120 mA, with a signal noise of <0.3 mV @ 500 Hz. It achieves position resolution in the sub-nm range in addition to a settling time in the microseconds range.
The NV120/1 piezo controllers are designed to be compact table top systems in a rugged metal housing. To accommodate use in laboratory conditions, the amplifiers have a dimmable TFT display.
For user flexibility various control options are included. A manual control, as well as an analog control, and various digital interfaces are available. The NV120/1 has two types of amplifiers. The NV120/1 is intended for actuators without an integrated measurement system.
The NV120/1 CLE has automatic sensor identification – the integrated ASI-functionality. It is designed for use with piezo actuators that have an integrated measurement system. It can be either a high-resolution strain gauge sensor or a non-contact capacitive sensor.
The NV100/D is a digital piezo controller with an ethernet interface for remote control and servicing of the piezo actuators. The user can drive quasi static or dynamic step positioning applications through the network access, allowing more flexibility and the use in critical environments. For the operation of the actuator a control voltage of -20 V to +130 V and a peak output current of 100 mA (2 x 40 mA NanoX®) are supplied. With a 16-bit resolution, the NV100/D NET guarantees high positioning accuracy and low noise.
Due to the stored information in the EEPROM, the actuator is automatically recognized. The NV100/D can be used with actuators equipped with either strain gauge or capacitive sensors, as well as with actuators without a measurement system. The NV100/D also supports actuators based on NanoX® bi-directional actuating technology.
The NV100/D NET has an automatic sensor identification (ASI) function and an automatic sensor calibration (ASC) function. All values of the actuating system, like serial number of the actuator, actuator name, control parameters and filter settings, are stored in the actuator plug. This allows an easy exchange of actuators or controllers. A digital PID controller is integrated into controller. The user can change the values according to his current setup himself.
The new NV200/D controller is built to deliver powerful high-resolution signals offering a wide variety of control options including ethernet and USB – C. With 400 mA of peak current, the system can provide high frequencies and fast response times, while still maintaining 16 bit resolution and less than 0.7 mV of noise.
The NV 200/D comes with an integrated closed loop control, as well as Iterative Learning Control for closed loop precision at open loop speeds.
PiSoWorks – NV200/D Net Controller Software
For precise control of the NV200/D controller, the included PiSoWorks software gives the user complete control over both the actuator and controller for a complete solution.
PiSoWorks software is available immediately for download and set-up is easy. Once the NV200/D NET amplifier is connected to your computer and your actuator, the system is ready for use.
When the software is first downloaded, set-up and connected via ethernet, it will automatically identify and display the connected amplifier and actuator.
The PiSoWorks software features a comprehensive graphical user interface that allows for control of your actuator in two optional modes – Easy Mode and Advanced.
Easy Mode examples:
Switch between open loop and closed loop control.
Set piezo actuator to a specified location.
View graphically the realized motion of the actuator after the actuator has jumped to the specified location.
Advanced Mode examples:
Manually adjust PID values for closed loop control.
Control piezo actuator dynamically by manually setting the internal signal generator.
Upload custom wave forms to control the piezo according to individual needs.
Determine resonance spectrum of the piezo (with added load) at the push of a button.
View graphically the realized motion of the actuator after the piezo responds to the desired wave form.
One special Advanced Mode function is ILC (Iterative Learning Control). ILC functionality uses a proprietary algorithm to generate higher closed-loop speeds compared to regular PID control. The ILC learns the actuator’s unique behavior and then compensates for unwanted motion that would normally slow a typical closed-loop system. ILC is especially useful for users who need to achieve precise repetitive actuator motion.
Using PiSoWorks software, simplifies system set-up, and gives the user precise comprehensive control of the NV200/D and the connected actuator. The software and user manual can be downloaded here.