3results about How to "Improve cornering performance" patented technology

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a score structure and score balloon, score structure includes the score silk at the surface of balloon and is provided with the fixing piece at the both ends of score silk, the fixing piece is annular hollow structure, the one end away from score silk on the fixing piece is provided with the fixed ring, the utility model has high connecting strength, is not easy to fall off, further improves the overbending capacity, reduces the operation risk, improves the security.

The application discloses a vehicle and a method and device for controlling the vehicle to turn in place. The method comprises the following steps: in response to a turning-in-place function starting signal of the vehicle, obtaining a driving mode, a vehicle speed, a steering angle and a steering direction of the vehicle; when it is determined that the vehicle meets the turning-in-place function starting condition according to the driving mode, the vehicle speed and the steering angle, determining a target wheel according to the steering direction; and applying a braking force to the target wheel or locking the target wheel to make the vehicle turn in place. Thus, the minimum turning purpose of the vehicle can be achieved, the vehicle can more smoothly complete the turning-in-place, the turning performance of the vehicle is improved, and the problem of personal safety or property safety caused by poor turning performance of the vehicle during vehicle driving is reduced.

The application discloses a kind of double active hinged shield machine cooperative steering control system and control method thereof, it is related to tunneling equipment steering control technical field.The double active hinged shield machine cooperative steering control system includes data acquisition unit, controller and execution unit, controller built-in cooperative operation, PID adjustment, safety constraint and machine jam prevention and control module.The double active hinged shield machine cooperative steering control method, total turning angle is calculated by geometric formula, split to two levels according to distribution coefficient Hinge, adopt inner ring position closed loop+outer ring tail shield correction Double closed loop architecture realizes accurate steering, real-time constraint hinge angle difference and execute over-limit compensation, simultaneously by multi-factor comprehensive evaluation realizes machine jam risk grading prevention and control and active escape.This application can realize 15~30m super-small turning radius, improve trajectory accuracy and equipment reliability, build whole-process machine jam prevention and control system, applicable to small-curvature complex tunneling working condition.