空間安定装置の高精度化の研究　第２報　　柔軟マウントによる不安定現象とその対策

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  • Study of Accuracy of Inertial Stabilization System. 2nd Report, Instability caused by a Flexible Mount and Measures to Avoid the Phenomenon.
  • クウカン アンテイ ソウチ ノ コウセイドカ ノ ケンキュウ ダイ2ホウ ジュウナン マウント ニ ヨル フアンテイ ゲンショウ ト ソノ タイサク

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Flexibility of payload mount in inertial stabilization system often exists, partly because nonrigid drive mechanism, support and/or platform, and partly because inserted vibration isolator. The mount flexibility, however, can cause severe instability of the stabilization control system, and thus introduces an adverse effect on system performance. This paper analytically reveals the mechanism of instability caused by the flexibility of mount, assuming spring and viscous coupling between payload and mount. A dual flexibility model on both payload and mount is also treated, and its theoretical transfer function is compared to the data obtained from a real stabilization system. Based on the results, measures to avoid instability in the presence of mount flexibility are proposed.

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