前言随着数字计算机在工业和国防等各个领域的广泛应用,迫切需要研制模/数(A/D)变换器,其主要任务是:将一些电流量或电压量高精度地转换成数字量,计算机根据这些数字量进行计算或处理,根据结果去控制被控对象。数字控制的主要优点是精度高,动态范围宽,改变参数非常灵活。例如计算机控制导弹的稳定系统,当被控对象参数有修改或被控对象的任务作某些变更时,只需改变计算的程序或处理的方法即可,无需改变计算机硬件,这是数字控制的优 Preface With the wide application of digital computer in various fields such as industry and national defense, it is urgent to develop an A / D converter whose main task is to convert some current or voltage into high precision, The computer calculates or processes according to these figures, according to the result to control the controlled object. The main advantages of digital control are high precision, wide dynamic range, very flexible changing parameters. For example, a stable system of a computer-controlled missile can change a program or a method of processing when the controlled object parameter is modified or a task of the controlled object is changed without changing the hardware of a computer. This is a digitally controlled excellent