Stepping Motor Driving Disturbance Test and Identification of Mathematical Disturbance Model

衛星内部に存在する各種の振動擾乱源の中でも擾乱レベルが高く、衛星システム設計の際の擾乱管理対象として注意が必要なステッピングモータ駆動系について、モータ駆動時に発生する擾乱の評価試験を行い、データ評価ならびに擾乱モデル同定を行った。結果として、太陽電池パドル駆動系のような、柔軟性構造特性を有する慣性負荷をモータ負荷として乗せたステッピングモータ駆動系について、実測結果を精度良く再現できる擾乱数学モデルを構築した。
Stepping motor is one of the most serious disturbance sources which generate high-frequency vibration and deteriorate pointing stability of satellite. Those disturbance sources need to be under control of satellite system design. To control disturbance sources in system design and meet pointing stability requirements, we need both of a high-frequency vibrations control method and accurate mathematical disturbance models. For this reason, we tested a stepping motor and evaluated the data of driving disturbance vibrations and identified 'stepping motor mathematical disturbance model'. Consequently, we realized an accurate mathematical disturbance model of stepping motor which includes flexible structure as inertial load. This mathematical model can be applied to all stepping motors in which key parameters like stepping motor characteristics and inertial load's structural characteristics are given.
資料番号: AA0063481055