Servo Motor Drive Mold Design Study Of The Non-sinusoidal Vibration

Mold non-sinusoidal oscillation of mold is one of the key techniques in thedevelopment of high-efficient continuous casting. Mold non-sinusoidal oscillator drivenby electro-hydraulic servo system, which run smoothly and the waveform is adjustedflexibly.However, it is more disadvantageous to reform the old caster for the greatinvestment and operation, complex structure, and inconveniency of maintenance.Theinvestment of mechanical type mold non-sinusoidal oscillation system is low, and can beused without the need for a large modification to the existing sinusoidaloscillator.Unfortunately, the modification ratio, an important parameter, is unable to beadjusted online, and can't be adopted in the caster if the strand is short.Hence, it is veryimportant to develop a new non-sinusoidal oscillator with simple structure, lowerinvestments,and the modification can be adjusted online.Series of research works on thissubject were carried out in this paper as follow.Based on the generating principle of non-sinusoidal, the non-sinusoidal oscillationmechanism driven by servomotor was developed and the electrical-control system wasconstructed. Also the realizing method of the three types non-sinusoidal function by thismechanism were given.The mathematical model of the PMSM was given, the matrix method was adopted toanalysis the kinematics of the mold oscillating mechanism by the hypothesis of multi-rigid body.The model of the mechanism was constructed by the ADSMS,and thedisplacement/velocity and acclleration of the mechanism was analysed. The method forthe PMSM non-sinusoidal based on the vector control was analysed.By using the theory of mechanical and electrical, establishes the four connecting rodequivalent physical model of the system.After the analyses of the moment of inertia,torque of the device,the vibration device was designed. compared with particularitysystem, the servo system has some particular characteristics,such as identifying the fastresponse property.By using material mechanics theory to check the strength and rigidity of each component. Thereby determining the dimensions of the component, designing arelatively reasonable experimental device.Analysising the control model. from the point of determine the optimum technologyparameters,analysising the range of the parameters of the non-sinusoidal.