| Author | Anan Suebsomran |
| Call Number | AIT Diss. no.ISE-06-02 |
| Subject(s) | Medical telematics
|
| Note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Dissertation ; no. ISE-06-02 |
| Abstract | In medical abdominal mass analysis, normally doctors directly analyzed the abnormality inside a patient's abdomen. However, the developing prototype enables the doctors to analyze by remote. The system comprises two subsystems, which are doctor side¬subsystem and patient side-subsystem. The development of each subsystem can be divided into 3 main parts; namely mechanical, electronics/control, and communication parts. The mechanical part was designed on AutoCad software, and the machining and assembly part were done by the research teams. The electronics part was designed on ProteI software such as switching circuit cards, buffer circuit cards, and the commercial PCI-1750 from Advantech was used for 32-Channel Isolated Digital I/O Card. Other parts are sensing and actuator part. Sensors are applied for displacement and force measurement. Actuators are DC motors. The control part was implemented on the .MCS¬51 microcontroller with 8 bits, model A T89S8252, with Atmel flash memory architecture. The communication part was implemented by Winsock application on Microsoft Visual C++ 6.0. The communication procedure is based on Client-Sever connection by using TCP/IP protocol. Much information is exchanged such as displacement, force, vision, and audio. Hybrid control of displacement and force in a medical tele-analyser by disturbance observer-based controller, which is robust to internal and external disturbances; model uncertainty, load, and friction was proposed. In the doctor-side subsystem, an array of displacement sensor is equipped to detect movement of the doctor's hand and fingers. The detected information is transmitted to the patient side to be used in medical analysis. On the other hands, the patient-side subsystem consists of an array of displacement actuators, which is used to follow displacement ofthe doctor's hand and fingers. An array of force sensors is used to detect forces between patient and the equipment. Since the displacement control in patient side subsystem is coupled with force control in doctor¬side one and vice-versa, the design of the controller has to be taken into account. In addition to the potential uses of this system in medical tele-analyser, the proposed system can also be used in any tele-displacement-force controls of industrial processes. The results showed the system performance by both simulation and experiment. The overall system was tested through network connection. It proved that the system works well even supposing with many system uncertainties. Time response of the controlled system guaranteed the system stability condition. Graphic display shows the status of information of both sides and is used for supporting the analysis. Many objects with different shape profiles were tested. The output detection result shown that overall performance of the medical tele-analyser could measure and classify several kinds of object. The controller is done by two control algorithm. A disturbance observer-based controller as well as the conventional PD tuning control method in hybrid control of force-displacement are presented |
| Year | 2006 |
| Corresponding Series Added Entry | Asian Institute of Technology. Dissertation ; no. ISE-06-02 |
| Type | Dissertation |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Systems Engineering (ISE) |
| Chairperson(s) | Manukid Parnichkun; |
| Examination Committee(s) | Afzulpurkar, Nitin V.;Teerapat Sanguankotchakorn;Ibrahim, Yousef.; |
| Scholarship Donor(s) | Ministry of University Affairs; |
| Degree | Thesis (Ph.D.) - Asian Institute of Technology, 2006 |