目的 为提高定量称量包装机的包装速度和包装精度，设计一种高精度的称量包装控制系统。方法 介绍定量称量包装机的机械结构以及工作原理，在此基础上设计一种以触摸屏和基于DSP为核心的定量称量包装控制系统，并详细论述基于DSP和触摸屏的硬件结构。在硬件结构的基础上，开发与之配套的定量称量包装的控制系统软件。结果 称量包装的最大相对误差不超过±0.6%。结论 该控制系统提高了定量称量包装机的精度、可靠性和可操作性。

The work aims to design a high-precision control system for weighing and packaging, in order to improve the packaging speed and accuracy of quantitative weighing packaging machine. The mechanical structure and working principle of quantitative weighing packaging machine were introduced. According to this, a kind of DSP-based touch-screen quantitative weighing packaging control system was designed, and the hardware structure based on DSP and touch screen was described in detail. Finally, on the basis of hardware structure, the control system software for quantitative weighing and packaging was developed. The experimental results showed that the maximum relative error of weighing and packaging was no more than ±0.6%. The control system improves the accuracy, reliability and operability of the quantitative weighing packaging machine.