National University of Singapore
1. Micromanipulator system for medical application, please read my paper:
Computer Controlled Piezo Micromanipulation System for Biomedical Applications
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Computer controlled piezo actuated micromanipulation system. Its stroke is 80 micrometer. |
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The system is mainly used for assisting doctor to treat cell under microscope. Different motion models including two vibration models are preset according to the requirements of the operator. |
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2. Linear motor and precision motion control
Micro-positioning of linear-piezoelectric motors based on a learning non-linear PID controller
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The linear motor is driven by piezo elements based on ultrasonic elliptical motion principle. To reach high precision tracking control (+/-1mm), a new nonlinear learning control method and profile error compensation technology are used. |
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Precision 3D machine driven by linear motor based on dSPACE control system. |
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Using ultra precision laser interferometer ( nanometre scale) to measure the movement and then compensate the motion errors. |
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Experiment system (dSPACE) for high precision motion encoder interpolation.
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Photos of the interpolated curves |
4. Double axis tracking system
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The system is used for manufacturing non circular parts, such as engine pistons with high precision and low cost. |
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Tracking results. |
