A nonlinear model predictive control algorithm is developed for obstacle avoidance in high-speed, large-size autonomous ground vehicles (AGVs) that perceive the environment only through information provided by on-board sensors. The mission of the AGV is to move from its initial configuration to the goal configuration safely. The resulting trajectory should be collision-free and the AGV should b...

purpose: to compare the efficacy and safety of ahmed glaucoma valve (agv) implantation in the superior versus inferior quadrants. methods: this prospective parallel cohort study was performed on 106 eyes of 106 patients with refractory glaucoma. main outcome measures included intraocular pressure (iop) and rate of complications. other outcome measures included best-corrected visual acuity (bcva...

AIM To review surgical results of the Armenian Eye Care Project's (AECP) efforts in paediatric glaucoma and to identify additional morbidity associated with its initial itinerant nature. METHODS A non-randomised, retrospective historical cohort study of complicated paediatric glaucoma surgeries was performed by the AECP at the Republican Eye Hospital. 38 eyes of 34 paediatric patients underwe...

BACKGROUND To evaluate the efficacy and safety of the Ahmed glaucoma valve (AGV) and the risk factors associated with AGV implantation failure in a population of Chinese patients with refractory glaucoma. METHOD In total, 79 eyes with refractory glaucoma from 79 patients treated in our institution from November 2007 to November 2010 were enrolled in this retrospective study. The demographic d...

Abstract : A tandem automated guided vehicle (AGV) system deals with grouping workstations into some non-overlapping zones , and assigning exactly one AGV to each zone. This paper presents a new non-linear integer mathematical model to group n machines into N loops that minimizes both inter and intra-loop flows simultaneously. Due to computational difficulties of exact methods in solving our pr...

This paper presents the design of an output feedback trajectory controller for a Automated Guided Vehicle (AGV) differential drive. Its control architecture assumes that the two drive wheels are not coupled and the vehicle dynamics is not taken into account. It employs two independent velocity controllers that ensure the wheels’ velocities referenced by the trajectory controller. The reference ...