{'fraction_non_alphanumeric': 0.018808777429467086, 'fraction_numerical': 0.0020898641588296763, 'mean_word_length': 5.386666666666667, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Study on performances of novel electromagnetic drive micromanipulator

A novel micromanipulator was proposed for the implementation of superprecise manufacture. There were Halbach permanent magnet matrixes attached on the sides and bottom of the carrier, while cross-cut air-core coils mounted on the fixed parts correspondingly. The carrier was driven directly in 6-degree of freedom by the magnetic repulsive force generated from the permanent magnets and coils, and the local electromagnetic fields and forces could be changed by switch on-off and amplitude of the coils current. This work introduced the construction and operating principle of the system. The magnetic field and force characteristics were analyzed thoroughly by three-dimensional (3D) finite element method (FEM). The conclusions can supply a good theoretical base for the design and control of the micromanipulation system, and the experiment curve proves the FEM results are accurate.