2024年3月13日发(作者：乌致)
专利内容由知识产权出版社提供
专利名称：Digital control method and apparatus for
rotary member supported by magnetic
bearing
发明人：Chikara Murakami
申请号：US08/518139
申请日：19950822
公开号：US05754425A
公开日：19980519
摘要：A method of controlling the axis S of a rotary member 1 is disclosed which
comprises the steps of: (a) sampling an inclined angle . theta. and it's rate d&thgr;/dt of
the rotary member; (b) in response to the angle . theta. and rate d&thgr;/dt, analytically
determining an assumed inclined angle motion of the rotary member at the end of each
sampling period T when no control torque is applied to the axis during the sampling
period; (c) dividing the assumed inclined angle motion into low and high frequency mode
components; (d) determining rotational vectors Sp and Sn of the mode components in a
free-conical motion; (e) determining rotational vectors of the divided mode components
in a forced conical motion at the end of the sampling period, provided that an unknown
constant control torque u(k) is virtually applied to the axis during one sampling period,
but no free conical motion exists; (f) adding the rotational vectors in the free and forced
conical motions for each of mode components; (g) determining the direction and
magnitude of the unknown control torque u(k) for each of mode components so as to
reduce the rotational vectors of the free conical motion; and (h) applying each of the
determined control torques or the added control torque to the axis by control coils.
申请人：EBARA CORPORATION
代理机构：Armstrong, Westerman, Hattori, McLeland, & Naughton
更多信息请下载全文后查看
2024年3月13日发(作者：乌致)
专利内容由知识产权出版社提供
专利名称：Digital control method and apparatus for
rotary member supported by magnetic
bearing
发明人：Chikara Murakami
申请号：US08/518139
申请日：19950822
公开号：US05754425A
公开日：19980519
摘要：A method of controlling the axis S of a rotary member 1 is disclosed which
comprises the steps of: (a) sampling an inclined angle . theta. and it's rate d&thgr;/dt of
the rotary member; (b) in response to the angle . theta. and rate d&thgr;/dt, analytically
determining an assumed inclined angle motion of the rotary member at the end of each
sampling period T when no control torque is applied to the axis during the sampling
period; (c) dividing the assumed inclined angle motion into low and high frequency mode
components; (d) determining rotational vectors Sp and Sn of the mode components in a
free-conical motion; (e) determining rotational vectors of the divided mode components
in a forced conical motion at the end of the sampling period, provided that an unknown
constant control torque u(k) is virtually applied to the axis during one sampling period,
but no free conical motion exists; (f) adding the rotational vectors in the free and forced
conical motions for each of mode components; (g) determining the direction and
magnitude of the unknown control torque u(k) for each of mode components so as to
reduce the rotational vectors of the free conical motion; and (h) applying each of the
determined control torques or the added control torque to the axis by control coils.
申请人：EBARA CORPORATION
代理机构：Armstrong, Westerman, Hattori, McLeland, & Naughton
更多信息请下载全文后查看