Yifan, numerical control system principle of the system

Yifan, CNC engraving machine co. , LTD. , the development of numerical control system is DSP ( 数字信号处理器) Multi-axis motion controller for the next bit machine, industrial control PC for PC technology of double CPU structure. PC to undertake the processing of the real-time tasks, real-time tasks, using DSP with high speed floating point arithmetic functions to deal with. This feature support customer according to the specific requirements of control tasks to create all kinds of advanced control algorithms, interface, etc. On the software for the system to provide an interface with MasterCAM software, support the DNC machining, such as HTTP and SMTP network protocol, automatically receive and process the email processing program files, is the independent development of high-performance CNC system. Considering in the machining process of speed, accuracy and real-time in the process of operation trajectory tracking and breakpoint memory all have high requirements, such as group using self-developed MCT8000 control card based on DSP technology, and design the corresponding hardware and control software. 1. System of hardware structure of the whole system is shown in figure 1, mainly including industrial PC, control panel, MCT8000 multi-axis motion control card and its interface board, power supply, servo amplifier, and motor, relay and some of the security and protection circuit. With industrial non-real-time tasks in computer process control and real-time task handled by MCT8000 movement control CARDS, and the servo amplifier and power supply, motor, relay as the actuator of the system. Figure 1 Fig system hardware structure of the system. 1系统硬件配置2。 Principle of motion control card MCT8000 series intelligent motion controller including the main control board, interface board and control software, etc. , is a new generation of open architecture of high-performance programmable motion controller. Its CPU by Texas instruments TMS320C3140MHzDSP, can through the ISA or PCI bus standard or USB interface connected to the main control machine at a high speed. Between master machine and controller adopts two-way communication, high-speed FIFO can provide 2 ~ 8 axis high speed and high precision servo control, main control machine can choose any PC series microcomputer. Compared with the traditional motion controller products, MCT8000 series product has an open structure, high speed, high precision, the online control, multi-axis synchronous control, reconfigurable, high integration, high reliability and safety, etc. MCT8000 in design adopted the advanced technology of hardware and software refactoring, depending on the control object can be set up to online system and refactoring, or through the software upgrade hardware. Can according to the different requirements of customers, can be adjusted at best controller hardware modules, match with corresponding BIOS, the user can I/O port of MCT8000 operation directly. MCT8000 provides a set of motion control functions, including the BIOS function library ( Direct manipulation MCT8000 all the I/O) , basic motion function library ( 1 ~ 3 d interpolation and motion control function) And expand sports function library ( Robot kinematics model and intelligent PLC code translator, etc. ) And the controller (online Point-to-point security based on TCP/IP communications protocol) 。 Motion control board structure diagram as shown in figure 2. Figure 2 Fig motion control board structure of the system. Ningbo engraving machine 2 Structure of motion control card how much one.