Research On Hytro-viscous Drive System For Belt Convery

Hydro-viscous clutch is a kind of electromechanical equipments which use the shear force of oil film to transfer power.Due to the direct starting of the large power electric motor will have a great impact on the electrical power supply system and the electric motor itseif,by using the hydro-viscous clutch can reduce the impact on the electric motor and the electrical power supply system and realize starting of the electric motor.This paper regards the belt convery as research subjects,and studies the transmisson mechanism of the hydro-viscous clutch and its control technology.On the basis of the analysis of the belt convery starting characteristics and the structure and principle of the hydro-viscous clutch.Aimed at the belt convery speed regulation and the instructure and principle of the hydro-viscous clutch analysed on the belt conveyor speed control characteristics,speed regulating mechanism of the hydro-viscous clutch is in-depth studied transmission torque calculation formula is derived.Used the finite element analysis under the hydro-viscous clutch stable working condition, the distribution of the stress of the friction disks is derived and the best thickness of the friction material is derived. through the local linear processing of the external characteristic curve of hydro-viscous clutch, build the mathematical model of the soft starting device,confirm the absolute stability region, the conventional PID and fuzzy PID two control strategies are respectively to simulating the model,compared the results,analysed which is the best strategy.Simulation experiment showed the fuzzy PID algorithm is more capable of tracking the given speed, has a faster response and proves the correctness of theoretical analysis. Aimed at the start of the large power belt conveyor, PLC as the core of the hydro-viscous clutch system is designed,can realize the soft start of the belt conveyor.