从铸造用电磁泵定量浇注系统的机理分析入手,分别进行了恒定参数法、容积补偿法和定悬浮高度法的实验研究和理论分析。结果表明,在非恒定量输出时,定悬浮高度法的定量方案最佳。随后又分别采用金属探针、陶瓷探针及激光测距仪测定悬浮高度,实验研究各种方法对定量精度及稳定性的影响;发现激光测距法定悬浮高度可大大提高定量的精度。 Starting from the mechanism analysis of quantitative casting system of casting electromagnetic pump, experimental research and theoretical analysis of constant parameter method, volume compensation method and fixed suspension height method were respectively carried out. The results show that in the case of non-constant output, the quantitative method of fixed-suspension height method is the best. Then, the height of suspension was measured by metal probe, ceramic probe and laser range finder respectively. The effects of various methods on the quantitative accuracy and stability were studied experimentally. It was found that the accuracy of laser quantitative determination could be greatly improved by laser ranging.