摘要:
A method for processing messages comprises: a first device sending a neighbor solicitation message to a second device, and then creating information of the second device based on a neighbor advertisement message replied by the second device; the first device sending a detection request message to the second device based on the created information of the second device, and determining whether a detection reply message sent by the second device is received in a period of time, and if it is not received, then the first device deleting the created information of the second device. Accordingly, a network device is provided comprising a neighbor solicitation message sending module, a neighbor advertisement message receiving module, an information creating module, a detection request message sending module and a detection reply message receiving module. Additionally, a method for processing messages and a network device are provided. The processing of the neighbor advertisement message by the methods and network devices decreases effects of the neighbor advertisement message with a false link layer address.
摘要:
The invention relates to a measurement apparatus (1) for detecting an amount of mechanical stress on a test object (12), the measurement apparatus (1) being adapted to generate a magnetic field and to receive the magnetic field to detect a change of a magnetic property of the test object (12) due to the mechanical stress exerted on the test object (12). The measurement apparatus (1) is furthermore adapted to compensate for changes of one or more additional physical properties of the test object (12) the change of the magnetic property of which is detected and/or adapted to compensate for changes of one or more environmental properties affecting the test object (12). Thus, the invention allows providing a measurement apparatus (1) for measuring mechanical stress through detecting a change of a magnetic property of the test object (12), the measurement apparatus allowing adjustment of the measurement scale in view of one or more additional physical properties of the test object (12) and/or one or more environmental properties.
摘要:
To provide an actuator that can flexibly and softly move like muscles, can maintain a stable operation over a long period of time, can generate a strong driving force, has a rapid input response, has a favorable sensitivity, has a high energy conversion efficiency, and can be accurately controlled. A coil is embedded in a magnetic elastomer obtained by mixing a powder-like ferromagnetic or highly magnetic permeable material with an elastomer, so that the coil can be electrically connected. By electrically connecting the coil, a magnetic field generates in the coil and around the coil. The magnetic field penetrates the magnetic elastomer. When the magnetic field generates in the magnetic elastomer, deformation force acts on the magnetic elastomer by the magnetic force acting on each portion in the magnetic elastomer. Thus, driving force can be obtained.
摘要:
A magnetostrictive actuator comprises an assembly of at least two GMM rods (8, 9) spaced apart from each other on the same longitudinal axis, each rod being surrounded by a respective energising electromagnetic coil (10,11) 5 and being mounted between respective biasing permanent magnets (12, 13, 14), the assembly being mounted between mechanical pre-stressing means (20, 21) and a foot (3) adapted to couple the forces produced by the actuator into a surface.