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电弧喷涂技术广泛应用于表面工程领域，能否等速同步送丝是其技术关键．提出了一种送丝电机调速系统，在分析电弧喷涂原理的基础上，通过采用由ＰＷＭ 调速、光电测速的ＰＩＤ 自动调节系统，实现了等速同步送丝，送丝速度可以采用数字指示并可预调．该电路成本低，性价比高，是一种值得推广的电路．
Arc spraying technology is widely used in the field of surface engineering, whether the speed of synchronous wire feeding is the key technology. Based on the analysis of the principle of arc spraying, a PID automatic adjusting system of PWM speed regulation and photoelectric speed measurement is put forward to realize the synchronous speed feed of wire feed. The speed of feed wire can be indicated by digital indication And can be preset. The circuit is low cost, cost-effective, is a worthy promotion of the circuit.