公开(公告)号：EP3879099A1

公开(公告)日：2021-09-15

申请号：EP20162253.7

申请日：2020-03-10

申请人： Artemis Intelligent Power Limited

发明人： CALDWELL, Niall James ,  DUMNOV, Daniil ,  LAIRD, Stephen ,  MACPHERSON, Jill ,  GREEN, Mathew

IPC分类号： F04B1/06 ,  F04B7/00 ,  F04B49/03 ,  F04B49/06 ,  F04B49/24

摘要： A hydraulic apparatus including an electronically commutated machine having a plurality of working chambers which are controlled on each cycle of working chamber volume to carry out active or inactive cycles of working chamber volume allows only a plurality of defined fractions of cycles to be active cycles to avoid generating frequencies of active cycles which cause low frequency resonances. The demand signal may be quantised into fractions m / n where n is an integer below a threshold selected to avoid repeating patterns of active cycles of more than a cut-off length.