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针对国产数控雕刻机现状和市场需求,运用模块化设计思想,研发了基于高性能数字信号处理(DSP)的新型雕刻机数控系统.在轨迹控制中运用了快速数字积分插补算法,在速度控制中采用了基于大“S”的速度控制方法.结合步进电机的转矩-频率特性和微处理器计算能力,提出了抛物线加减速控制方法,合理地利用了微处理器的资源,使电机的升、降速过程快而平稳.将该算法应用于所设计的基于DSP和现场可编程门阵列(FPGA)的三维雕刻机数控系统中,加工速率提高了大约20%.
Aimed at the current situation and market demand of domestic CNC engraving machine, a new CNC system of engraving machine based on high performance digital signal processing (DSP) was developed by using modular design idea.The fast digital integral interpolation algorithm was used in trajectory control, Based on the large “S ” speed control method.Combined with the torque-frequency characteristics of stepping motor and microprocessor computing power, put forward a parabolic acceleration and deceleration control method, the rational use of the microprocessor resources, Which makes the motor speed up and down fast and steadily.This algorithm is applied to the design of three-dimensional engraving machine CNC system based on DSP and field programmable gate array (FPGA), the processing speed is increased by about 20%.