>>num=[7 7]; >>den=[conv(conv([1 0],[1 3]),[1 4 5])]; >>Gk=tf(num,den); >>Gb=feedback(Gk,1,-1) >>rss=tf([1 0],[0 1]);  >>Kv=dcgain(rss*Gk) >>essv=1/Kv

<span style、"font-family: 宋体; font-size: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';">超调量</span>

<span style、"font-family: 宋体; font-size: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';">调节时间</span>

<span style、"font-family: 宋体; font-size: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';">上升时间</span>

<span style、"font-family: 宋体; font-size: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';">稳态误差</span>