机械原理第一次作业(matlab7。0):求:r1 旋转 360°时,θ2,θ3,ω2,ω3,α2,α3 和 C 点的加速度。设 r1=400,r2=1000,r3=700,r4=12001、角位移的 M 函数:function y=jweiyi(x)% Input parameters% x(1)=theta—1% x(2)=theta—2 guess value% x(3)=theta-3 guess value% x(4)=r1% x(5)=r2% x(6)=r3% x(7)=r4% Output parameters% y(1)=theta-2% y(2)=theta—3theta2=x(2);theta3=x(3);%epsilon=1.0E—6;%f=[x(4)*cos(x(1))+x(5)*cos(theta2)—x(7)—x(6)*cos(theta3); x(4)*sin(x(1))+x(5)*sin(theta2)—x(6)*sin(theta3)];%while norm(f)〉epsilon J= [ — x ( 5) * sin ( theta2 ) x(6 ) *sin(theta3 ) ;x(5 ) * cos(theta2) —x(6)*cos(theta3)]; dth=inv(J)*(-1.0*f); theta2=theta2+dth(1); theta3=theta3+dth(2); f=[x(4)*cos(x(1))+x(5)*cos(theta2)-x(7)—x(6)*cos(theta3); x(4)*sin(x(1))+x(5)*sin(theta2)—x(6)*sin(theta3)];norm(f);end;y(1)=theta2;y(2)=theta3;r1 旋转 360°时,θ2,θ3 的 M 文件程序:r(1)=400;r(2)=1000;r(3)=700;r(4)=1200;dr=pi/180;th(1)=0;th(2)=44。0486*dr;th(3)=96.6654*dr;y=jweiyi([th(1),th(2),th(3),r(1),r(2),r(3),r(4)])dth=1*dr;for i=1:360y=jweiyi([th(1),th(2),th(3),r(1),r(2),r(3),r(4)]);th23(i,:)=[th(1)/dr,th(2)/dr,th(3)/dr];th(1)=th(1)+dth;th(2)=y(1);th(3)=y(2);endfigure(1)plot(th23(:,1),th23(:,2),th23(:,1),th23(:,3),th23(:,1),th23(:,1))axis([0,360,0,360])grid ontitle(’角位移线图’)xlabel('曲柄转角 th(1)')ylabel(’从动件转角 th(2),th(3)’)text(300,50,'角 th(2)')text(300,150,’角 th(3)')text(200,200,'角 th(1)')2、角速度的 M 函数:function y=rrrvel(x)% Iput parameters%% x(1)=theta-1% x(2)=theta—2% x(3)=theta-3% x(4)=dtheta—1% x(5)=r1% x(6)=r2% x(7)=r3%% Output parameters%% y(1)=dtheta—2% y(2)=dtheta—3%A=[-x(6)*sin(x(2)) x(7)*sin(x(3)); x(6)*cos(x(2)) —x(7)*cos(x(3))];B=[x(5)*sin(x(1));—x(5)...