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Accurate controll of piezoactuator
 Hurdálek, Tomáš ; Šifta,, Radim (referee) ; Urban, František (advisor)
This thesis deals with the possibility of current and voltage control of piezoactuators from the point of view of control of optical filters for retuning the optical spectrum. At first, there is an effort to clarify the basic physical principles that are closely related to this issue. The thesis also deals with different types of piezoactuators and determines which one is the most suitable for the application. Attention is also paid to the explanation of different control options. A comparison of available drivers was made. Measurements, circuit simulations and testing of various circuits of critical parts of the driver were made. Based on this, a current driver and a current source to power it were developed. The device has been constructed and tested.
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