Loading...

Modeling and Intelligent Control of Heart Assist Device

Takhtechian, Parisa | 2017

484 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 49641 (55)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Jahed, Mehran
  7. Abstract:
  8. Congestive heart Failure (CHF) which occurs when the heart is no longer able to pump the blood sufficiently is a worldwide growing health concern. In the U.S. alone, an estimated 8 million people will be diagnosed with heart failure by 2030.Cardiac transplantation with limitations in donor availability, cannot solely resolve this global health concern. Therefore many patients must use alternative remedies, namely Artificial Heart and Ventricle Assist Device (VAD). The Left Ventricular Assist Device (LVAD) is a mechanical pump that is implanted in patients with congestive heart failure to help the left ventricle in pumping blood to the circulatory system. They are known to function as a bridge to transplant, meaning that the patient may still need to wait for a donor heart. In rotary type LVAD, the pump is controlled by varying the pump motor speed to adjust the amount of blood flowing through the LVAD. The development of an appropriate controller is therefore an essential step in meeting this challenge. The primary function of this system is based on cardiovascular system and blood circulation and in this work initially a healthy heart and blood circulation system is simulated, followed by the addition of a brushless DC motor LVAD rotary pump to a CHF model. Brushless DC motor is controlled in order to appropriately coordinate it with functioning heart using an Adaptive Fuzzy PID controller. In this regard the required fuzzy rule based system was designed and simulated for various physiological demands of the cardiovascular system. The results demonstrate that for diastolic pressure, the response of the LVAD based system matches almost exactly that of the normal heart and for the systolic pressure it is in an acceptable
  9. Keywords:
  10. Simulation ; Intelligent Control ; Congestive Heart Failure (CHF) ; Heart Assist Device

 Digital Object List

 Bookmark

No TOC