http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Switching Model Predictive Control of a Pneumatic Artificial Muscle
George Andrikopoulos,George Nikolakopoulos,Ioannis Arvanitakis,Stamatis Manesis 제어·로봇·시스템학회 2013 International Journal of Control, Automation, and Vol.11 No.6
In this article, a switching Model Predictive Controller (sMPC) scheme for the position control of a Pneumatic Artificial Muscle (PAM) is being presented. The control scheme is based on a constrained linear and PieceWise Affine (PWA) system model approximation that is able to capture the high nonlinearities of the PAM and improve the overall model accuracy, and is composed of: a) a feed-forward term regulating control input at specific reference set-points, and b) a switching Model Predic-tive Controller handling any deviations from the system’s equilibrium points. Extended simulation studies were utilized in order to investigate and evaluate the efficacy of the suggested controller in the positioning problem of a PAM.
Paraskevas Gkolfakis,Marc-André Bureau,Marianna Arvanitakis,Jacques Devière,Daniel Blero 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.1
A 44-year-old woman underwent sleeve gastrectomy, which was complicated by a leak. She was treated with two sessions ofendoscopic internal drainage using plastic double-pigtail stents. Her clinical evolution was favorable, but four months after the initialstent placement, she became symptomatic, and a gastrobronchial fistula with the proximal end of the stents invading the diaphragmwas diagnosed. She was treated with antibiotics, plastic stents were removed, and a partially covered metallic esophageal stent wasplaced. Eleven weeks later, the esophageal stent was removed with no evidence of fistula. Inappropriate stent size, position, stentingduration, and persistence of low-grade inflammation could explain the patient’s symptoms and provide a mechanism for gradualmuscle rupture and fistula formation. Although endoscopic internal drainage is usually safe and effective for the management ofpost-laparoscopic sleeve gastrectomy leaks, close clinical and radiological follow-up is mandatory.