{'fraction_non_alphanumeric': 0.017719568567026195, 'fraction_numerical': 0.0, 'mean_word_length': 6.059782608695652, '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}}
Characteristics and Optimization of Bilateral Linear Permanent-Magnet-Assisted Synchronous Reluctance Motor with Compact Secondary Structure

Linear motor systems possess the advantage of high speed, high acceleration and high repeat positioning accuracy for the absence of intermediate transmission mechanism compared with traditional rotary motor plus ball screw pod systems. However, the applications of linear motor systems are limited to high-end occasions due to the relatively high cost. Therefore Permanent-Magnet-Assisted Synchronous Reluctance Motor (PMaSynRM) is introduced to linear format which intends to obtain certain performance with lesser or cheaper permanent magnets. This paper proposes a Bilateral Permanent-Magnet-Assisted Synchronous Reluctance Linear Motor (LPMaSynRM) with novel secondary structure in order to overcome the unilateral magnetic force which causes structure fragility and assembling difficulty. A compact secondary structure is proposed to reduce the mover’s volume and mass of the LPMaSynRM. In addition, genetic algorithm combined with response surface method is applied to the optimization of complex secondary structure. The finite-element simulation indicates that the proposed mover structure improves the thrust characteristic of bilateral LPMaSynRM.