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Compared with traditional rotary-percussive drills driven by electromagnetic motors, ultrasonic drills show advantages of small size, low power, low weight on bit, and lubrication free, making them available for the extraterrestrial rock sampling, especially for the minor planet with a weak gravitational field. To solve the problem that the conventional percussive ultrasonic drills cannot remove cuttings...
The rescue mission of nuclear plant is both complex and dangerous, there is an urgent need to enhance the dexterity of rescuing manipulator to realize the automatic tool replacement for executing different tasks. A compliant exchanger for rescuing manipulator in nuclear plant is manufactured. The exchanger adopts a new double universal joint docking method, which can realize the compliant docking...
The application of nuclear power is more and more extensive, and valve opening operation gains more and more attention as valves are indispensable accessories in nuclear plant. The types of valves used in nuclear plant are huge, the end effector of manipulator should have the ability to exchange tools to accomplish different valve opening tasks. This paper designs a valve opening device for manipulator...
As a key structure in an aircraft, rudder is employed to steer the flight vehicle under the instructions of center control unit. There are three main components in rudder: actuator, transmission, and control surface. Power is usually transmitted from the actuator to the control surface via the transmission. To some degree, the performance such as the efficiency and rigidity of rudder is directly determined...
In order to research endo-atmospheric mass moment control interceptor with three moving mass actuators, dynamics equations of this system are derived in detail. The dynamics model with nine degrees-of-freedom is presented. Then the integrated simulation is performed using SIMULINK without neglecting any control parameters. The important factors of influencing the angle-of-attack and angle-of-sideslip...
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