Study Of The Control System For The Embedded Computerized Flat Knitting Machine

The main research theme of this dissertation is the control system for the embedded computerized flat knitting machine (ECFKM). The current research situation and the development trend of the computerized flat knitting machine (CFKM) and the development and the application of the embedded technology in industry domain are introduced in detail. And the control system of the CFKM with the embedded technology is proposed. At first, the principle of control units of the CFKM is analyzed. And then, the principal and subordinate control mode is applied to the ECFKM control system, μC/OS-II is the operating system of the principal control. At last, the ECFKM control system is test and some sweater with the difference flower pattern is knitted.In chapter 1, the background and the significance of the research are stated. The development trend and the current research situation of the CFKM and the development and application of the embedded technology are introduced in detail. The main content of this dissertation is proposed.In chapter 2, the principle and the technics of the CFKM are introduced and the systems analysis of the ECFKM is proposed.In chapter 3, the control system of the ECFKM is analyzed in detail, and the control of the head's position of the machine and the needle selection of the ECFKM is emphasized. The whole scheme of the ECFKM is proposed.In chapter 4, the hardware design of the ECFKM is expatiated, the principal and subordinate control mode is proposed and the principal is a 32-bit ARM and the subordinate control is a group of 8-bit singlechips. The hardware of the function modules is designed in detail in this chapter.In chapter 5, the software design of the ECFKM is expatiated. The realization of the principal and subordinate control software is expounded, μC/OS-II is the operation system of the principle control software. The communication between the principal control and the subordinate control is 8-bit parallel data bus with self-defined instructions. The subordinate control accepts the instruction sent by the principal control, implement the instruction and feed back the current state.In chapter 6, testing of the control of the ECFKM and the analysis of the Reliability is expatiated. Some sweater of the difference flower pattern is knitted with the ECFKM control system developed by this dissertation.In chapter 7, the study contents and conclusion of the dissertation have been summarized, and the further research works have been forecast.