Kokusai Electric Corporation

Yasuhiro Matsuda

Masaya Nishida

Mamoru Oishi

A substrate processing apparatus includes: a placement part whereon a substrate container is placed; a substrate retainer supporting the substrate; transfer mechanisms configured to transfer the substrate between the substrate container and the substrate retainer and to perform a transfer operation; a detector provided at one or more of the transfer mechanisms to detect vibration; a memory device that registers, in advance, natural frequencies of the substrate and one or more of the transfer mechanisms and threshold values of the substrate and the plurality of transfer mechanisms; and a monitoring part to monitor whether an intensity of the vibration, based on transformed data obtained by transforming detection data, exceeds at least one of the threshold values of the substrate and the plurality of transfer mechanisms and whether a vibration frequency is equal to at least one of the natural frequencies of the substrate and the plurality of transfer mechanisms.

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Toyama, Japan

Yasuhiro Matsuda