Axial Extrusion Of Disc Current Actuator Design And Research

Electrorheological technology (ERT) is a high and new technology. Under the control of externally applied electric field strength,ER fluids (ERF) can be inverted between liquid phase and solid phase quickly,and the inversion is reversible and controllable. Due to the Electrorheological (ER) Effect is a kind of remarkable effect,ERF can be widely applied in electromechanical transmission and control systems.Recently,many research units and enterprises take part in ERT,but in most of ER applications they have designed,the working modes of ERF are only flow mode or shear mode,for the sheerly shear mode,the ERF revolve and flow can't cause extra extrusion force to enhance torque,the torques transferred by the ER applications are small,only can be used in small power situation. A new types of ER actuator - revolving and axial movement disk transmission actuator (ER RAAMDTA) is developed. The ERF working mode of ER RAAMDTA is a compound mode - shear-squeeze mode. ER RAAMDTA is a breakthrough of ERT in electromechanical transmission and control system field. The characteristics of ER RAAMDTA are the fast response speed,computer controllability and stepless regulation.The paper present an applied formula is presented for ER actuator - revolving and axial movement disk transmission actuator (ER RAAMDTA),which shows that Electrorheological (ER) Effect of extrusion is due to two factors: the average electric field intension in the clearance of the disks and the mechanics performance of ER fluids (ERF). In the formula the ratio of the axial movement amplitude and the average clearance of the disks is the parameter describing the electric field intension and hydromechanics performance. The research indicates that semi-experience formula has the clear physical concept clear and can be easily applied in practice.In this paper,Virtual instruments (Ⅵ) technology and Lab VIEW graphic program that easy for learning and using in engineering are selected to combine with ERT,which set up the measure and control system of the ER RAAMDTA and can expediently control the stepper motor and asynchronous motor. At the same time,the actuator's torque can be measured rapidly and accurately,it can also be controlled precisely.Mass data of experimental acquisition were analyzed in this paper. The ER RAAMD's externally applied electric field strength,two disks inter-rotate speed and structural dimensions are discussed respectively. All of these parameters are related to the output torques transferred by the ER RAAMD. The paper analyzed how to acquire the optimum dynamic performance of the ER RAAMD. The output of RAAMD and the plate ER actuator were compared. The research showed that the torque transferred by the RAAMD is larger near upon decuple than that of the plate actuator,which provides experimental data for further studies on theoretical research and ER industrial application,furthermore,the feasibility of the design is illuminated in this paper.