Abstract
In the design and manufacturing process of permanent magnet synchronous linear motors (PMSLMs), tolerance select will directly influence the thrust performance of the motor. This article investigates the selection criterion of design tolerance for the PMSLMs, which are applied in the laser cutting machine, and select an appropriate tolerance range that meet the thrust performance and at low manufacturing cost. First, analytical analysis is used to determine the relationship between the geometric tolerance of the air gap and the thrust performance and finite element analysis is used to confirm the analytical results. Then, the extreme learning machine is introduced to thrust modeling with high-precision and high-efficiency. Furthermore, the geometric tolerance range of the air-gap is solved under the requirement of the PMSLM through genetic algorithm and allocated to the relevant parts. Finally, the effectiveness of tolerance selection is validated through the PMSLM prototype experiment.
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