| 摘要 |
1. A drive system comprises a plurality of rotatable bodies (2, 2') which are drivably associated with rotatable gear wheel means (3, 3') and which are adapted to perform two like working cycles for each rotation. The gear wheel means (3, 3') comprises a gear wheel (3) which in operation causes a characterised rotational error and which is associated with an intermediate gear wheel (4) which in operation causes a rotational error equal in magnitude and opposite in phase to that of the gear wheel (3) to provide rotational error compensation in the drive system. <IMAGE> |
