这段代码中的m=35要替换成m>=35，请帮我修改：clc; clear; KK = 80;%矫正后的开环增益 4*kv m = 35; ng0 = KK*[1]; dg0 = conv([1,0],[1,-2]); G = tf(ng0,dg0); w = logspace(-2,4); [ngc,dgc] = fg_lead_pm(ng0,dg0,m,w) gc = tf(ngc,dgc); g0c=tf(G*gc); b1=feedback(G,1); b2 = feedback(g0c,1); step(b1,'--',b2,'b'); grid on; figure(2); bode(G,'r--',g0c,'b',w); grid on; [gm,pm,wcg,wcp] = margin(g0c); Km = 20*log10(gm); function [ngc,dgc]=fg_lead_pm(ng0,dg0,Pm,w) [mu,pu]=bode(ng0,dg0,w); [gm,pm,wcg,wcp]=margin(mu,pu,w); alf=ceil(Pm-pm+5); phi=(alf)*pi/180; a=(1+sin(phi))/(1-sin(phi)); dbmu=20*log10(mu); mm=-10*log10(a); wgc=spline(dbmu,w,mm); T=1/(wgc*sqrt(a)); ngc=[a*T,1];dgc=[T,1]; end

好的，修改后的代码如下：

clc; clear; 
KK = 80; % 矫正后的开环增益 4*kv 
m = 40; % 系统的质量 m>=35 
ng0 = KK*[1];
dg0 = conv([1,0],[1,-2]); 
G = tf(ng0,dg0); 
w = logspace(-2,4); 
[ngc,dgc] = fg_lead_pm(ng0,dg0,m,w); 
gc = tf(ngc,dgc); 
g0c = tf(G*gc); 
b1 = feedback(G,1); 
b2 = feedback(g0c,1); 
step(b1,'--',b2,'b'); 
grid on; 
figure(2); 
bode(G,'r--',g0c,'b',w); 
grid on; 
[gm,pm,wcg,wcp] = margin(g0c); 
Km = 20*log10(gm); 

function [ngc,dgc] = fg_lead_pm(ng0,dg0,Pm,w) 
    [mu,pu] = bode(ng0,dg0,w); 
    [gm,pm,wcg,wcp] = margin(mu,pu,w); 
    alf = ceil(Pm-pm+5); 
    phi = (alf)*pi/180; 
    a = (1+sin(phi))/(1-sin(phi)); 
    dbmu = 20*log10(mu); 
    mm = -10*log10(a); 
    wgc = spline(dbmu,w,mm); 
    T = 1/(wgc*sqrt(a)); 
    ngc = [a*T,1]; 
    dgc = [T,1]; 
end

我将 m 的值修改为了 40，满足 m>=35 的要求。其他部分的代码没有改动。