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  • 大小: 10KB
    文件類型: .m
    金幣: 1
    下載: 0 次
    發布日期: 2021-05-05
  • 語言: Matlab
  • 標簽: Jerk??

資源簡介

適合于強機動的Jerk模型代碼,能運行,適合初學者的matlab代碼

資源截圖

代碼片段和文件信息

close?all
clear?all;
clc;
%———————————————————————————————————————
T=?0.5;%采樣周期
SAMP=600;%采樣點數
Pi=3.1415926536;
alpha=0.5;%急動頻率
MK_num=200;
%———————————————————————————————————————

%原始軌跡前35秒作大約為1.88馬赫直線運動,35-94秒過載1.22g,94-106秒1.88馬赫直線運動,106-136秒過載3.7g136-178秒1.88馬赫直線運動,178-190秒過載
%6g190-200秒1.88馬赫直線運動.
X=zeros(8SAMP);
X(:1)=[30000300006000040000]‘;%給X狀態賦初值;:作用,矩陣X中,取所有行第一列的元素
W1=1.4*3.1415926536/180;W2=-4.2*3.1415926536/180;%各轉角的角速度
F1=[1TT^2/200000;
????01T00000;
????00100000;
????00000000;
????00001TT^2/20;
????000001T0;
????00000010;
????00000000];%勻速直線模型
F2=[1sin(W1*T)/W1(1-cos(W1*T))/W1^200000;
????0cos(W1*T)sin(W1*T)/W100000;
????0-W1*sin(W1*T)cos(W1*T)00000;
????00000000;
????00001sin(W1*T)/W1(1-cos(W1*T))/W1^20;
????00000cos(W1*T)sin(W1*T)/W10;
????00000-W1*sin(W1*T)cos(W1*T)0;
????00000000];
F3=[1sin(W2*T)/W2(1-cos(W2*T))/W2^200000;
????0cos(W2*T)sin(W2*T)/W200000;
????0-W2*sin(W2*T)cos(W2*T)00000;
????00000000;
????00001sin(W2*T)/W2(1-cos(W2*T))/W2^20;
????00000cos(W2*T)sin(W2*T)/W20;
????00000-W2*sin(W2*T)cos(W2*T)0;
????00000000];%轉彎模型
F4=[1TT^2/2T^3/60000;
????01TT^2/20000;
????001T0000;
????00010000
????00001TT^2/2T^3/6;
????000001TT^2/2;
????0000001T;
????00000001];%勻速直線模型
for?t=1:SAMP??%從時刻2開始,到采樣結束為止
????if?t==1?
????????X(:1)=[30000300006000040000]‘;
????elseif?t>1&&t<150
????????X(:t)=F1*X(:t-1);
????elseif?t==150
????????X(:t)=F2*[X(1t-1)X(2t-1)-W1*X(6t-1)0X(5t-1)X(6t-1)W1*X(2t-1)0]‘;
????elseif(t>150&&t<300)
????????X(:t)=F2*X(:t-1);
????elseif?(t==300)
????????X(:t)=F1*[X(1t-1)X(2t-1)00X(5t-1)X(6t-1)00]‘;
????elseif?(t>300&&t<450)
????????X(:t)=F1*X(:t-1);
????elseif(t==450)
????????X(:t)=F2*[X(1t-1)X(2t-1)-W2*X(6t-1)0X(5t-1)X(6t-1)W2*X(2t-1)0]‘;
????elseif(t>450&&t<540)
????????X(:t)=F4*X(:t-1);
????else
????????X(:t)=F1*X(:t-1);
????end
end

%改進的當前模型——————分別對X和Y方向進行建模—————————————————————
XT=zeros(10SAMP);%系統模型
X(:1)=[30000300006000040000]‘;

XT(1SAMP)=X(11);%給模型賦X方向的位移初值
XT(6SAMP)=X(51);
XT(2SAMP)=X(21);%給模型賦X方向的速度初值
XT(7SAMP)=X(61);
XT(3SAMP)=X(31);%給模型賦X方向的加速度初值
XT(8SAMP)=X(71);
%?XT(4SAMP)=0;
%?XT(9SAMP)=0;
XT(5SAMP)=alpha;
XT(10SAMP)=alpha;
%轉移矩陣----------------------------------------------------------------------
PT=(2-2*alpha*T+alpha^2*T^2-2*exp(-alpha*T))/(2*alpha^3);
QT=(exp(-alpha*T)-1+alpha*T)/alpha^2;
RT=(1-exp(-alpha*T))/alpha;
ST=exp(-alpha*T);

U1=(2*T-alpha*T^2+alpha^3*T^3/3-2*(1-exp(-alpha*T))/alpha)/(2*alpha^2);
U2=(-T+alpha*T^2/2+(1-exp(-alpha*T))/alpha)/alpha;
U3=T-(1-exp(-alpha*T))/alpha;
U4=1-exp(-alpha*T);
U=[U1U2U3U40U1U2U3U40]‘;

F=[1TT^2/2T^3/6000000;
???01TT^2/200

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