The Research Of Several Key Technologies Of Embedded Embroidery Machine's Controller

The research of sophisticated embroidery machine's controller is always the hottest topic in embroidery field. With the development of technology, the fusion between embedded technique and technique of embroidery control further promotes the development of embroidery with higher stability and intelligence. Compared with the advanced foreign products of the same kind, the present domestic embroidery machine's controller urgently needs improvements; there exists some limitations, such as low accurate controlling, slow operation and so on. As for this, this paper comes up with a kind of embedded embroidery machine's controller based on ARM and DSP to fix it. The main work and contributions of dissertation are summarized as follows:Firstly, fulfilling the establishment of Linux cross-compiling environment on target computer, cutting out the Linux kernel, the transplant of bootloader and file system and so on.Secondly, the communication module based on a dual-port RAM chip (IDT7132) was designed. High speed data transfer between ARM and DSP was realized by using it.Thirdly, the storing format of file with embroidery pattern (DST) and method of decoding were researched intensively. Through transplanting GUI software to hardware and fulfilling the design of friendly controlling user interface of the whole system.Fourthly, DSP environment for CCS was established, and analyzed the centre hardware control module based on TMS320LF2407A, such as embroidery frame motor and principal axis motor (including the method of motor control and devices such as photoelectric encoder) and so on, the realization of motor control by DSP.