Dynamic Analysis And Control System Design Of Multi-directional Vibratory Feeder

Vibratory machine has always played an important role in the machinery industry.It has a wide range of applications in feeding,screening,sorting,molding processing,fault diagnosis,etc.The vibratory machine which is used for materials mainly includes vibratory feeders,vibratory discs and vibrating screens,etc.,the most common one is electromagnetic vibratory feeders.The traditional feeders are mostly one-way linear vibratory feeder machines,they can only transport materials in one direction.For the work that needs to transport materials in multiple directions so that can perform different operations,there are few relative researchs.Therefore,this paper designs and develops an automatic feeding system which can realize the function of transporting materials along multiple directions in the horizontal plane,this system has high practical application value.The main works of this paper is as follows:(1)Based on the decoupling principle,a new type of electromagnetic vibratory feeder is proposed.The structural design and working principle analysis are carried out.The dynamic equations of the multi-directional vibratory feeder are established by the base point method.The kinetic equations parameters are determined according to the design requirements.The modal parameters and steady state vibration analytical solution of multi-directional vibratory feeder are obtained by solving the equations.The modal test is used to verify the correctness of the modal parameters near the resonance of the feeder.(2)The two main forms of motion(sliding motion and throwing motion)of the material in the multi-directional vibratory feeder are analyzed in detail.The method for determining the overall motion of the material in the multi-directional vibratory feeder chute under different working conditions,as well as the determination principle of the kinematic parameters of the feeder and the optimal voltage range are obtained.According to the vibration steady-state analytical solution of the feeder and the material motion analysis,the control theory of the material moved in multiple directions in the horizontal plane is obtained.(3)A control system that can automatically change the direction of materials movement in the horizontal plane is built.The main research contents include system construction and programming.The working principle of the vibration feeding controller and programmable logic controller are elaborated,as well as the design of the control scheme and program.A complete control system is formed.The feeding experiment of the multi-directional vibratory feeding system is carried out,the system operation is stable,and the feeding effect basically meets the design requirements.