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In this paper, the authors propose applying a handheld actuator to actively control spiral-type wireless capsule endoscope (WCE). The actuator and WCE were fabricated and relevant tests were examined in porcine small intestine. The actuator consisted of step motor, driving circuit, micro controller unit (MCU), input and output circuits, and permanent magnet attached to step motor. Spiral-type WCE...
In this paper, a new 6-DOF serial and parallel manipulator with a 3-rotation parallel mechanism and a 3-DOF serial manipulator (two-prismatic plus one-revolute) is synthesized and investigated according to the theories of the structure synthesis of robot mechanisms. It is able to perform spatial transformational movement, rotation, hoisting, tilting, planar rotation and tilted rotation. The mechanism...
There are many hinge points in earth-machinery working mechanism. A reasonable gap between shaft and bushings is so important for the design of working mechanism design. This paper briefly analysed failure mechanism caused by irrationality selection on fitting gap between hinge shaft and bushings of earth-machinery, such as hydraulic excavator working equipment. A new calculate theory and method on...
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