Abstract: In order to eliminate the additional moments of force, the magnetic force, gravity force and friction force were studied in a novel two-degree-of-freedom (2-DOF) nanopositioning magnetic levitation stage. The structure of the nanopositioning stage was designed in terms of the theory of force balance, then, the direction and coordinate point of the drive force of the nanomotor were gained. The experiment of linearity and repeatability of the stage were carried out, and the experiments results indicated that the yaw error was less than 5 arcsec, the pitch error was less than 15 arcsec and the repeatability of these two errors were nearly 1 arcsec per one millimeter. The stage movement was stable. |
Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.
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