磁石埋め込み型リニア同期モータの推力密度の限界 : モータ・アクチュエータ

概要

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Linear motors have been applied in a wide range of fields in the recent years. A linear motor differs from a rotation motor, which has a simple structure and is easy to miniaturize. For office and factory automation, however, the small size and high thrust of linear motor are required. This paper discusses the maximum thrust density of a proposed Interior Permanent Magnet Linear Synchronous Motor (IP-LSM). To estimate the maximum thrust density of the IP-LSM, we studied the expression of the thrust density. The law of conservation of energy was used to clarify the relationship between motor size and the expression for thrust density. The estimated maximum thrust density is 1.2 × 10^6 N/m^3. The thrust density of the proposed IP-LSM is 30% less than the estimated maximum value. The thrust constant density of the proposed IP-LSM, however, is 3.6 times larger than that of the MG-LSM1).
社団法人日本磁気学会の論文
2002-04-01