δСںϲƺĵλԾӦ
ԽԾӦ߽зͼʾ֪?i=4.57%5%ָҪ
8
ȽϾСںϲƺĵλԾӦߺδСںϲƺĵλԾӦ߿֪ǰ£СԻڵĽ״СԻںϲһԻڣӶҲӰ
3.תٻĶ̬У
1MATLABߣƾСںϲƺתٻƵߺ͵λԾӦ
ƹ̺ͽͼʾľСںϲתٻ̬ṹͼ
ҲͨMARLABз棬£
>> n=50;
>> sys1=tf(0.016,[0.0016 1]); >> sys2=tf(8,[0.02 0]);
>> w=53.71*tf([0.016 1],[0.016 0]); >> figure(1);
>> margin(sys1*sys2*w); >> hold on >> grid on >> figure(2);
>> closys1=n* sys1*sys2*w/(1+sys1*sys2*w); >> t=0:0.001:0.06; >> step(closys1,t); >> grid on
ͨMATLAB棬ͼʾľСںϲƺתٻƵߺ͵λԾӦߣ
9
СںϲƺתٻƵ
СںϲƺתٻλԾӦ
ԽԾӦ߽зͼʾ֪תٳ=23.3%%ɹԶС0.5sָҪ
10
2δСںϲƺתٻƵߺ͵λԾӦMATLAB
ƹ̺ͽͼʾľСںϲתٻ̬ṹͼ
ҲͨMARLABз棬£
>> sys0=tf(1,[0.001 1]);
>> sys1=tf(0.8,[0.0003/1666.67 1/1666.67 1]); >> sys2=tf(8,[0.02 0]); >> sys3=tf(0.02,[0.001 1]);
>> w=53.71*tf([0.016 1],[0.016 0]); >> figure(1);
>> margin(sys1*sys2*sys3*w); >> hold on >> grid on
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