1 PhD, Assistant Professor, Department of Pediatric Dentistry, Faculty of Dental Medicine, Medical UniversitySofia, Bulgaria 2 PhD, Professor, Department of Pediatric Dentistry, Faculty of Dental Medicine, Medical UniversitySofia, Bulgaria *Corresponding author’s E-mail: [email protected] Tel: +359 888 363 312 Er:YAG laser is one of the most suitable laser systems used in pediatric dentistry. The...

Early in calendar year 2004, TPG Applied Technology will deliver two manipulator systems to the Spallation Neutron Source (SNS) project in Oak Ridge, Tennessee, for use as remote maintenance systems when the SNS becomes operational in 2006. One of these manipulator systems will be a boom system mounted on a pedestal with a dual-arm dexterous manipulator mounted on the end of the stick. The othe...

The automation of mobile working equipment used in farming, forestry and the construction industry has great market potential. Tasks of a highly complex nature could be executed without intervention of the operator. Despite the potential significance of this topic, only very few results of international research projects in robotics have heretofore been applied in the serial production of comme...

Hydraulic machines used in mining and excavation applications are non-linear systems. Besides the nonlinearity due to the dynamic coupling between the different links there are significant actuator non-linearities due to the inherent properties of the hydraulic system. Optimal motion planning for these machines, i.e. planning motions that optimize a user-selectable combination of criteria such ...

Excavators are high power machines used in the mining, agricultural and construction industry whose principal functions are digging (material removing), ground leveling and material transport operations. During the digging task there are certain unknown forces exerted by the bucket on the soil and the digging operation is repetitive in nature. Automation of the digging task can be performed by ...

Original scientific paper The paper reviews simplified equivalent torsional models as an efficient approach to modelling and simulating dynamic behaviour of electric motor driven mechanisms. The focus is put on preliminary design phase. Motion of the masses is described by a system of second-order non-homogeneous differential equations. The solution yields the law of motion as well as the torqu...

In the construction field, when an excavator dismantles a building using attachment, large amount of fine dust is generated, causing air pollution. this study, mist-spraying robot was proposed, aiming to effectively suppress generation in field. The could spray mist while motion tracking attachment excavator. recognized and tracked source by estimating posture position Forward kinematics used e...

The compaction device for highway structural layer is the hinge connection of end hydraulic breaker rod a conventional excavator and base device. During operation, steel panel positioned on top construction area, which then compacted by controlling excavator. This can quickly effectively solve common quality issues such as insufficient compactness earth shoulder in projects.

Background: It is known that the work efficiency of teleoperated construction machinery is lower than that of directly operated machinery. Assistance via automatic control is expected to improve the work efficiency. However, this assistance might break the feeling of control and prohibit control adjustments by the operator. Methods: We propose a semiautomatic system that fuses manual and automa...

An excavator is a typical hydraulic heavy-duty human-operated machine used in general versatile construction operations, such as digging, ground levelling, carrying loads, dumping loads, and straight traction. However, there are many tasks, such as hazard environment (nuclear decomposition, earthquake, etc) which is not suitable human working on site. The remotely controllable excavators are re...