Investigation on the improvement of turning ability for heavy transportation vehicle

The turning ability of heavy transportation vehicle is investigated and improved using new control method in this paper. The investigation is carried out on the model building of the whole turning system includes electromagnetic valve, hydraulic cylinder and turning mechanical part. Based on the model, the factors of blocking the turning ability of heavy transportation vehicle are studied. Then a new control algorithm which combined Bang-Bang control and PID control is presented, the simulation is carried out to verify the algorithm's validity. According to the actual application demand, the turning control algorithm is realized by using CAN fieldbus and PLC controllers. The ability of the turning system of heavy transportation vehicle has been improvement greatly and the effect shows the algorithm meets the requirement.