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Starting from the symmetrical mature of methematics modle, this eassy verifies the standard solving method of allotter problem, the hungarian symmetrical solving method, with practical calculating examples, The further realization about the essence of it and its future researching direction is also pointed out. 从指派问题数字模型的对称性出发,以实际算例验证了存在于求解指派问题的标准解法——匈牙利法的对称解法,从而对指派问题及其解决的实质,有了更进一步的认识,并指出了以后的研究方向。 This paper developments a threedimensional automatic position system based on straight line insert compensation principle.The hardware includes singlechip computer output circuit,optocoupler,driving circuit,direct current source etc.Buffer register,circular allotter,control logic,positive run and back run control circuits are replaced by computer software.The test result proves that the system hardware circuits are simple and the system has more antiinterference ability. 以直线插补原理为基础,设计出以单片机为核心、步进电机拖动的三维立体自动定位系统。硬件电路包括单片机输出接口电路、光电耦合电路、驱动电路、直流电压源电路等。由缓冲寄存器、环形分配器、控制逻辑及正反转控制门组成的步进电机控制器则用计算机软件替代。实验结果表明:系统的硬件线路简单,抗干扰能力强。 This paper advances the circuits of step motor plane rectangular coordinates automatic position system controlled by single chip computer.It includes the single chip computer output circuit,the opto coupler,the driving circuit,the direct current source etc.The step motor controller composed of buffer register,the circular allotter,the control logic,the positive run and back run control circuits is replaced by computer software.The test result proves that the system hardware circuits are simple and... This paper advances the circuits of step motor plane rectangular coordinates automatic position system controlled by single chip computer.It includes the single chip computer output circuit,the opto coupler,the driving circuit,the direct current source etc.The step motor controller composed of buffer register,the circular allotter,the control logic,the positive run and back run control circuits is replaced by computer software.The test result proves that the system hardware circuits are simple and the system has more anti interference ability.The system is correct. 设计出以步进电动机拖动为核心的平面直角自动定位系统电路,其中包括单片机输出接口线路、光电耦合线路、驱动线路、直流电压源电路等。由缓冲寄存器、环形分配器、控制逻辑及正反转控制门组成的步进电机控制器则用计算机软件替代。实验结果表明,系统的硬件线路简单,抗干扰能力强,系统性能达到设计要求
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