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Entwicklung eines elektrodynamischen, linearen Schwingaktors und das Verfahren zu dessen Steuerung und Regelung
| Content Provider | Semantic Scholar |
|---|---|
| Author | Demjanenko, Dmitrij Dipl. Ing. |
| Copyright Year | 2012 |
| Abstract | Repetitive linear motion can be generated in various ways, for instance, by means of a crank mechanism, with the kinematic coupling pre-defining a motion sequence. In order to be able to alter motion profiles while such a system is running, costly mechanical design is required. Other types of mechanisms, using pushor pull-type solenoid-plungers, make it possible to regulate the oscillation amplitude, yet do not allow for high-speed control of the mechanical trajectory due to the very high inductance of the field coil. Such linear oscillatory drives are used in various areas and are mostly designed for a specific application. The use of contactless excitation of the mechanical oscillating system, in combination with low coil inductivity, gives the electrodynamic linear oscillating drive presented in this paper the following advantage over the current state of technology: not only can it generate nearly all possible motion profiles of the oscillating weight, but these profiles can be systematically controlled. For this purpose, two control algorithms are mapped out, of which one is experimentally investigated. It can be shown that the oscillation amplitude under external influence (such as the damping of motion caused by the piercing of human skin) settles itself in three to five oscillatory periods. In order to sustain the desired velocity profile, permanent monitoring of the position of the oscillatory weight is required. In doing so, swift and precise control of the motion trajectory is achieved. The device has a convenient, fully electronic operator interface for adjusting individual work parameters, such as oscillatory amplitude, frequency, and control quality. Settings can be adjusted conventionally with the help of a stand-alone control unit, or by using a smartphone or a laptop computer with a cable or wireless connection. The oscillatory drive described in this paper is designated for the execution of skin-piercing movements, such as tattooing or pigmentation. The oscillatory drive has been tested by professional tattoo artists for its suitability for intradermal pigmentation. A special feature of the device is the possibility of adjusting the control quality and depth of penetration of the needle or a grouping of needles into human skin (i.e. the “softness” of tattooing) by changing the setting for “soft” or ”hard” operation, affecting the resulting pigmentation and allowing for photo-realistic color gradations. The linear oscillating drive is also suitable for generating motion resulting in a single skinpiercing prick, such as required in the medical field for various types of injections. |
| File Format | PDF HTM / HTML |
| DOI | 10.14279/depositonce-3312 |
| Alternate Webpage(s) | https://depositonce.tu-berlin.de/bitstream/11303/3609/1/Dokument_33.pdf |
| Alternate Webpage(s) | https://doi.org/10.14279/depositonce-3312 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
