Designs
Single-Axis Tilt Platforms
Single-Axis Tilt Platforms (qX) can be designed in two ways:A) Single Flexure, Single Actuator Tilt Platform
Examples:
S-224 and S-226, click here
The platform is supported by one flexure and pushed by one linear piezo actuator (Click here). The flexure determines the pivot point and doubles as a preload for the Piezo actuator.
The advantages of the single flexure, single actuator design are the straightforward construction and low costs. If angular stability over a large temperature range is a critical issue, the Differential Piezo Drive is recommended.
Construction of a Single Flexure, Single Piezo Actuaror Tilt Platform
B) Differential Piezo Drive Tilt Platform
Examples:
Custom designs.
This construction features two Piezo linear actuators (operated in push/pull mode) supporting the platform (3.4/2). The case is machined from one solid metal block with FEA (Finite Element Analysis) designed wire EDM (Electric Discharge Machining) cut flexures. The flexures provide for zero friction/stiction and excellent guiding accuracy.
The differential design exhibits an excellent angular stability over a wide temperature range. With this design temperature changes only affect the vertical position of the platform (piston motion) and have no influence on the angular position. After the operating voltage is removed the platform returns to the center position.
Construction of a Differential Piezo Drive Tilt Platform
