University of Twente Student Theses
The design and analysis of an onboard control system of a tetherless miniature magnetic robot
Toebes, Isabel (2023) The design and analysis of an onboard control system of a tetherless miniature magnetic robot.
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| Abstract: | Unthethered microelectromechanical systems (MEMS) have a lot of potential for future medicine, for example, restoring blood flow in clogged vessels. This can be done by a MEMS with full energetic autonomy in a static magnetic field, using time-varying current through coils to create mechanical torque, creating a screwing translational movement. In this work, the onboard control system of this MEMS is designed by creating an electrical circuit, which should comply with the set specifications; creating a time-controlled magnetic moment at the frequency of 5 Hz with a phase-shift of 180 degrees between the two coils with a root mean square (RMS) current of 100 mA. The circuit consists of an oscillator, phase shifter, amplifier stage and two coils. This has first been simulated in LTspice XVII, after which the circuit was built and physically tested. From this a RMS current of 109.3 mA and 100.1 mA have been measured, creating an efficiency of 10.5% and 5.38% for the simulation and physical circuit, respectively. |
| Item Type: | Essay (Bachelor) |
| Faculty: | ET: Engineering Technology |
| Subject: | 33 physics, 44 medicine, 53 electrotechnology |
| Programme: | Biomedical Technology BSc (56226) |
| Link to this item: | https://purl.utwente.nl/essays/97335 |
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