Abstract
In this paper we present a control strategy based on a combination of the flatness approach and saturation functions to manipulate the optical tweezers system, which is a flat system, with flat outputs given by the horizontal and vertical positions. The strategy allows the optical tweezers to steer a microscopic particle from an initial position to a final desired position, following a suitable trajectory. The control strategy is proposed under the assumption that the particle is suspended in a frictionless medium. Due to the fact that the particle horizontal and vertical velocities cannot be measurable, a high-gain observer is used. The resulting controller has a relatively simple stability analysis. The control strategy performance is tested by numerical simulations.
Original language | English |
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Title of host publication | New Nanotechnology Developments |
Publisher | Nova Science Publishers, Inc. |
Pages | 125-136 |
Number of pages | 12 |
ISBN (Electronic) | 9781617618277 |
ISBN (Print) | 9781607410287 |
State | Published - 1 Jan 2009 |
Keywords
- Flatness based control
- High-gain observers
- Optical tweezers
- Saturation function