PID调节是什么？
<p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);">在工程实际中，应用最为广泛的调节器控制规律为比例、积分、微分控制，简称PID控制，又称PID调节。</p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);"><br/></p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);">PID控制器的参数整定是控制系统设计的核心内容。它是根据被控过程的特性确定PID控制器的比例系数、积分时间和微分时间的大小。PID控制器参数整定的方法很多，现在一般采用的是临界比例法。</p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);"><br/></p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);">利用该方法进行PID控制器参数的整定步骤如下： </p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);"><br/></p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);">(1)首先预选择一个足够短的采样周期让系统工作﹔ </p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);"><br/></p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);">(2)仅加入比例控制环节，直到系统对输入的阶跃响应出现临界振荡，记下这时的比例放大系数和临界振荡周期﹔ </p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);"><br/></p><p style="box-sizing: border-box; background-repeat: no-repeat; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei", tahoma, arial, "Hiragino Sans GB", sans-serif; font-size: 15px; text-wrap: wrap; background-color: rgb(247, 247, 247);">(3)在一定的控制度下通过公式计算得到PID控制器的参数。</p><p><br/></p>
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