![]() A method for developing dynamic priority is presented in this research. In SFC standards, it is possible to define a constant priority (e.g. One problem in the implementation step is the occurrence of simultaneous events in mutually exclusive transitions. Sequential Function Chart, as an international standard programming language, is used for implementing PN-based controllers. ![]() Despite the great acceptance of SCT in controller design, there are problems with its practical implementation. This paper presents a method for implementing a controller synthesized by PN-based SCT theory. Using the PLC will save electronic components used in the drive circuit because it is not required any interface circuit linking the PLC and the SMs, as a result this will minimizing the cost and develop the whole reliability of the controller. This paper highlights the simplicity of possibility to control the SMs by using any type of the SEMs based on PLC. Function Block Diagram (FBD) semantic design program is employed to achieve the proposed PLC controller programs for SMs. LOGO! Soft Comfort Version 8.2 has been used to build our algorithms for the speed, displacement of rotations, and direction control of SMs. Experimentally, Siemens LOGO! 230 RC (as a basic PLC unit), with the aide of Digital Module LOGO! DM8 230R (as an expansion module) has been used in our work. The speed, number of rotations, and direction (Bi-directional) of SMs are manipulated in each one of these methods. These methods are: wave, half, and full Stepping Excitation Method (SEM). This paper introduces a design and implementation of three methods to control a two SMs using Programmable Logic Controller (PLC). Stepper Motors (SMs) are precise and exact in generating discrete stationary angular revolutions, and for these reasons it has recently been used in Robotic Devices.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |