In the wire bonding process of microelectronic packaging,heat affect zone(HAZ)is an important factor governing the loop profile of *** height of loop is affected by the length of the *** governing the HAZ were *** inv...
详细信息
In the wire bonding process of microelectronic packaging,heat affect zone(HAZ)is an important factor governing the loop profile of *** height of loop is affected by the length of the *** governing the HAZ were *** investigate this relationship,experiments were done for various sizes of wire and free air ball(FAB).Electric flame-off(EFO)current, EFO time,EFO gap and recrystallization were also *** results show that as the size of FAB becomes larger,the length of HAZ *** the increase of EFO current and time,the length of HAZ becomes *** FAB forms at the same parameter the length of HAZ becomes shorter with the high temperature of recrystallization.
Molecular techniques are transforming our understanding of cellular function and the origin of disease. However, accurate molecular analysis methods will be limited if the input DNA, RNA, or protein is not derived fro...
详细信息
This paper presents a new developed anthropomorphic robot dexterous hand: HIT/DLR Hand II. The hand is composed of an independent palm and five identical modular fingers, and each finger has three degree of freedom ...
详细信息
This paper presents a new developed anthropomorphic robot dexterous hand: HIT/DLR Hand II. The hand is composed of an independent palm and five identical modular fingers, and each finger has three degree of freedom (DOFs) and four joints. All the actuators and electronics are integrated in the finger body and the palm. Owing to using a new actuator, drivers and a novel arrangement, both the length and width of the finger is about two third of its formner version. By using the wire coupling mecha- nism, the distal phalanx transmission ratio is kept exactly 1 : 1 in the whole movement range. The packing mechanism which is implemented directly in the finger body and palm not only reduces the size of whole hand but also make it more anthropomorphic. Additionally, the new designed force/torque and position sensors are integrated in the hand for increasing muhisensory capability. To evaluate the performances of the finger mechanism, the position and impedance control experiments are conducted.
In this paper, we discuss a collision detection approach which enables the flexible joint manipulator to work safely in an unstructured environment. By using joint torque sensors, a novel Cartesian impedance control l...
详细信息
According to the characteristics of airfield and harbor from remote sensing images, a method of large target recognition based on the combination of target region and shape features is presented. First, edge detection...
详细信息
The paper deals with the motion of turning in place of a spherical robot for military reconnaissance and unknown environment exploration developed by us. The robot belongs to a nonholonomic and under-actuated system. ...
详细信息
The colonoscope is an important surgical tool to diagnose various colon diseases. However, the conventional colonoscope usually causes the patient a great deal of discomfort and pain. In order to develop a colonoscope...
详细信息
In biomedical areas, such as protein crystallization, drug discovery and medical diagnostics, thousands of reagents with different viscosities need to be transferred or dispensed in submicroliter range. Most of the co...
详细信息
A novel method is presented to automatically extract the midsagittal plane (MSP) from volumetric MR images. The MSP which generally approximates the interhemispheric fissure is the plane separating both hemispheres. I...
详细信息
暂无评论