This paper introduced the controller design of brushless DC motor using the special integratedcircuits MC33035 and MC33039,and the controller was mainly applied in the single-chip microcomputer control system for the automatic winder.
This paper introduces the disadvantages of control system in vertical coil winder,analyses the characteristics of open system architecture for numerical control, adopts the structure made of industrial personal computer and motion controller to reconfigure control system of vertical coil winder, and attains high performance along with low cost.
The AC high speed winder control system is composed of Siemens S7-400 PLC, OP270 hand touch screen, 6SE70 AC frequencyconversion and speed control device, hydraulic pressure press proportion control device, tension detection device, diameter detection deviceand breaking paper detection device etc.
The method is based on a natural approach to the derivation of the equation of motion of the winder as a function of the rotation of the wound shell about its own axis.
An automatic control system for spinning and winding of synthetic fibres that provides for operation of the electric drive of the metering pumps in conditions of stabilization of the melt pressure and rotation rate of the winder drive was proposed.
Spring rainfall at Shanghai is classified according to the number of total rain days and the characteristic distribution of the rain days. The category of spring rain is found to be well related to the number of days with Ural blocking high in the preceding winder (Dec.-Feb.). Finally, a forecast was made with good results for the category of spring rainfall in 1979.
The driving wheel on a multi-frictional winder is the key part of a hoist. Research of stress calculation about the shell of a driving wheel has been done for years at home and abroad, but no satisfactory results have been obtained so far. In this paper,having chosen a newly suitable model according to the classical theory of shells, the writers have derived a group of analytical expressions for the stresses in the shell of driving wheel and calculated them numerically by computer.The calculating mode...
This paper makes a study of winder of the fiberglass wiredrawing machine with twin-elastic supports, in which the mass of the two supports is an entirety, elastic elements having possessed of not only compressive rigidity but also flexural rigidity. Firstly, the differential equations for the vibration of winders are established,the formula for calculating the inherent frequency are thus induced, however, the relevant formula in the literatures may be included and "considered as of a particular ...