Seam Tracking Monitoring Based on Adaptive Kalman Filter Embedded Elman Neural Network During High-Power Fiber Laser Welding

Monitoring of welding status by molten pool morphology during high-power disk laser welding

“…A c c e p t e d M a n u s c r i p t 4 welding and his/her research emphases were mainly on the infrared characteristics of molten pool, spectrum and temperature gradient characteristic of plasma during high power laser welding [15]. Wang et al [16] and Liu et al [17] made use of the numerical simulation method according to the theory of conversation of energy to acquire the morphology of the molten pool, and assess the welding quality.…”

“…Welding technology with high-power disk laser beam, as a high quality joining technology, is widely applied in many fields, such as automotive industry and manufacturing [4][5][6]. Therefore, the study of welding quality during high-power disk laser welding becomes more and more important, which gives a foundation of online control welding process.…”

The Study of Visual Measurement Based on GPS Navigatio

“…However, it has loopholes, such as positioning error caused by signal attenuation due to building block and signal instability indoors and in some areas. Kalman filter algorithm, centrali zed Kalman filter algorithm or dispersed Kalman filter algorithm are some of the solutions to enhance the fault tolerance [1][2][3][4]. Deri L. and his team carried out an indepth study of GPS navigation technology [5][6][7].…”

Weld appearance prediction with BP neural network improved by genetic algorithm during disk laser welding

“…The inherent flexibility of the laser welding is due to its ability to operate in both the conduction mode for shallow penetration welding and the keyhole mode in deep penetration welding [4,5]. However, without a thorough physical understanding of the associated molten pools phenomena, the potential of laser welding cannot be fully excavated.…”