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Duda S.,Silesian University of Technology | Gembalczyk G.,Silesian University of Technology | Jurkojc J.,SilesianUniversity of Technology | Kciuk S.,Silesian University of Technology | Michnik R.,SilesianUniversity of Technology
Proceedings of the ECCOMAS Thematic Conference on Multibody Dynamics 2015, Multibody Dynamics 2015 | Year: 2015

Effective re-education of patient's walk is largely dependent on the repeatabilit of the conducted exercises. Striving to guarantee the patients an intensive training in sufficien time, rehabilitation centers use various kinds of devices supporting the work of physica therapists. A mechatronic device dedicated to the re-education of walk has been develope in the Department of Theoretical and Applied Mechanics of the Silesian Universit of Technology. The work presents a general operating concept of the system and an experimental verification of the assumed control mechanism for the case of wal in unloaded conditions.The device is a MIMO (Multiple-Input Multiple-Output) system Control system processes the measuring signal from the sensors: relief force, rope deviatio angle, a sensor detecting the pressure with which the foot touches the floor and encoder recording the position of the relief system. Acquisition of all recorded signals, both digita and analogue, is done in a specially designed interface for signal conditioning. Drive motor work by adjusting the rotation speed. The device operations are controlled by a compute equipped with the RT-DAC4/PCI card for real-time operations. MATLAB/Simulink software i used to program the device controlling system. The computer is directly connected to the signa conditioning. Algorithms implemented in the control system of the drives use the PID controller. The values of setpoints for drive controllers responsible for the movemen of an individual device axis were set based on the optimization of the timeline. Respons of the drive system to the requested forces with the use of a device numeric model wa investigated. During the optimization of parameters of the algorithm responsibl for the following movement, a rope deviation angle and for the weight compensation system a deviation of the relief force from the requested value were minimized.


Tejszerska D.,SilesianUniversity of Technology | Wolanski W.,SilesianUniversity of Technology | Larysz D.,Medical University of Silesia, Katowice | Gzik M.,SilesianUniversity of Technology | Sacha E.,SilesianUniversity of Technology
Acta of Bioengineering and Biomechanics | Year: 2011

Craniosynostosis represents premature suture fusion of the fetal and neonatal skull. Pathogenesis of craniosynostosis is complex and probably multifactorial. Growth of skull bones is strictly connected with the expanding growth of the brain and cranial malformations or prematurely fused sutures cause abnormal head shape. In order to diagnose the craniosynostosis, physical examination, plain radiography, and computed tomography with 3D reconstructions are indispensable. Engineering software such as Mimics v.13.1 and 3-matic v.5.0 enables a 3-dimensional model of head to be generated, based on the pictures obtained from CT. It is also possible to indicate the distances between the characteristic anatomical points. These measures are helpful during planning the neurosurgical correction of the skull, because the possibility of strictly specifing incisions before surgery, which is very important to provide the maximal safety of a child.

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