matlab_mechanical

F_w=2500;V_w=1.0;D_w=360;h_w=0.94;h_cb=0.98;h_cf=0.995;h_r=0.995;h_g1=0.97,h_g2=0.97;K_max=1.1;K_min=1;n_w=6*10^(4)*V_w/pi/D_w;P_w=(F_w*V_w)/1000/h_w;h=h_cf*h_cb*h_g1*h_g2*(h_r)^(3);P_0=P_w/h;P_m_max=K_max*P_0;P_m_min=P_0*K_min;%选择电动机;P_m=3;n_m=960;K=P_m/P_0;i_ii_max=25;i_ii_min=9;n_ii_max=i_ii_max*n_w;n_ii_min=i_ii_min*n_w;%电动机选择完毕i_j=n_m/n_w;i_2=sqrt(i_j/1.3);i_1=1.3*i_2;%各轴转速n_I=n_m;n_II=n_m/i_1;n_III=n_II/i_2;n_w=n_III;%各轴输入功率P_I=P_0*h_cf;P_II=P_I*h_r*h_g1;P_III=P_II*h_r*h_g2;% P_w=P_III*h_r*h_cb;%各轴输入转矩T_I=9550*P_I/n_I;T_II=9550*P_II/n_II;T_III=9550*P_III/n_III;T_0=9550*P_0/n_m;T_w=9550*P_w/n_w;

%%角度转换

rad2deg(pi)ans =   180>> sin(pi/2)ans =     1

用matlab画双坐标的图表

x=[0.0630.12860.14040.16140.1860.2034]y=[0.090.270.270.450.091.72];z=[98.2899.1999.5599.7399.7399.91  ]x=x';y=y';z=z';X=linspace(0,.9);Y=spline(x,y,X);values1= spcrv([[x(1) x x(end)];[y(1) y y(end)]],3);values2= spcrv([[x(1) x x(end)];[z(1) z z(end)]],3);[AX,H1,H2]=plotyy(values1(1,:),values1(2,:),values2(1,:),values2(1,:));