Precision servo transmission systems have widely been applied in industrial equipment to achieve high accuracy and high speed motion.However,due to the presence
In earth pressure balance (EPB) shield construction,the “plastic flow state” is difficult to form using the soil dug in the capsule because it can cause three
Considering the direct and converse piezoelectric effect,expressions of piezoelectric membrane intal forces in the piezoelectric constrained layer were given.Th
The shield machine is a heavy construction machine for tunnel excavation,and the segment erector is an important subsystem of the shield machine.It is difficult