The velocityconstraint subspace of each branch chain was obtained by means of solving the screw system of each branch chain of 3-PTT parallel mechanism.
通过求解3-PTT并联机构各支链的螺旋系得到各支链的速度约束子空间。
2
Furthermore, the constraint condition, sand property and loading velocity all affect the pipeline stability to a certain degree.
管道的约束条件、砂床特性和加载速度对管道稳定性均有影响。
3
The guidance method satisfies terminal angular constraint as reentry vehicle hitting target, but also ensures minimum loss of maneuvering velocity for reentry vehicle.