syms da dalpha dd dtheta dbeta; da = 0; dalpha = 0; dd = 0; dtheta = 0; dbeta = 0; du = pi/180; L1(1) = Link('theta', 90du+0.02+dtheta, 'a', 0+0.001+da, 'alpha', 0+0.003+dalpha, 'qlim', [180, 365], 'modified'); L1(2) = Link('d', 0+0.001+dd, 'a', 185+0.0079, 'alpha', 0+0.001, 'qlim', [3du, 63du], 'modified'); L1(3) = Link('d', 90+0.005+dd, 'a', 0+0.005+da, 'alpha', pi/2+0.005+dalpha, 'qlim', [60du, 120du], 'modified'); L1(4) = Link('theta', 0+dtheta, 'a', 120+0.12, 'alpha', pi/2, 'qlim', [230, 326], 'modified'); L1(3).theta = L1(3).theta + 0.023 + dtheta; L1(4).theta = L1(4).theta + 0.08 + dtheta; Needle = SerialLink(L1, 'name', 'Needle'); theta1 = 0.1; theta2 = 0.2; theta3 = 0.3; theta4 = 0.4; T01_error = DH(L1(1).theta+dtheta, L1(1).d+dd, L1(1).a+da, L1(1).alpha+dalpha); T12_error = dh(L1(2).theta+dtheta, L1(2).d+dd, L1(2).a+da, L1(2).alpha+dalpha); T23_error = dh(L1(3).theta+dtheta, L1(3).d+dd, L1(3).a+da, L1(3).alpha+dalpha); T34_error = dh(L1(4).theta+dtheta, L1(4).d+dd, L1(4).a+da, L1(4).alpha+dalpha); T_error = simplify(T01_errorT12_errorT23_errorT34_error); T = Needle.fkine([theta1, theta2, theta3, theta4]); T_error = subs(T_error, [theta1, theta2, theta3, theta4], [L1(1).theta, L1(2).theta, L1(3).theta, L1(4).theta]); T_total = T*T_error; dx = T_total(1, 4); dy = T_total(2, 4); dz = T_total(3, 4); rx = atan2(T_total(3, 2), T_total(3, 3)); ry = atan2(-T_total(3, 1), sqrt(T_total(3, 2)^2 + T_total(3, 3)^2)); rz = atan2(T_total(2, 1), T_total(1, 1)); disp(['dx = ', num2str(dx)]); disp(['dy = ', num2str(dy)]); disp(['dz = ', num2str(dz)]); disp(['rx = ', num2str(rx)]); disp(['ry = ', num2str(ry)]); disp(['rz = ', num2str(rz)]);代码运行不出来说dh没有定义
时间: 2024-04-28 14:25:40 浏览: 81
这段代码中确实没有定义dh函数,可能是代码作者在其他地方定义了dh函数,或者是拼写错误。
如果你想让代码运行起来,可以尝试将dh函数替换成DH函数,因为DH函数在代码中已经定义了。你只需要将dh改为DH即可,例如:
T12_error = DH(L1(2).theta+dtheta, L1(2).d+dd, L1(2).a+da, L1(2).alpha+dalpha);
另外,你还需要将T01_errorT12_errorT23_errorT34_error修改为T01_error*T12_error*T23_error*T34_error,因为这是四个变换矩阵的乘积。
相关问题
优化程序 syms x y ; eq1 = y == k2.*(x - x0) + y0; eq2 = y == 300/pi.*log(abs(sec(pi*x/300))) + 30; sol = solve([eq1, eq2], [x, y]); % k2_val = k2; % x0_val = x; % y0_val = b; sol.x = subs(sol.x, [k2, x0, y0], [k2, x0, y0]); sol.y = subs(sol.y, [k2, x0, y0], [k2, x0, y0]); disp(sol);
这段程序的目的是求解两个方程组成的方程组。第一个方程是 $y=k_2\cdot(x-x_0)+y_0$,第二个方程是 $y=\frac{300}{\pi}\cdot\log|\sec\frac{\pi x}{300}|+30$。程序中使用了 MATLAB 中的 solve 函数来求解方程组,并将解赋值给 sol 变量。同时,注释掉了一些不必要的代码。
syms x; syms y; syms a; syms b; syms c; x0=-pi/4;x1=pi/4; y0=-tan(c)*tan(23.43*pi/180); y1=tan(c)*tan(23.43*pi/180); fun1 = sin(c)*(sin(x)-x*cos(x))/(cos(x)^2+tan(c)^2)^0.5 fun2 = (0.506-0.476*cos(y))*sin(x-1/3*pi)+0.6609*cos(y)+0.409 fun3 = (cos(y)-cos(x))/(sin(x)-2*pi/360*x*cos(x)) fun41 = sin(c)*(cos(y)-cos(x))/(cos(x)^2+tan(c)^2)^0.5 fun42 = 2*asin(fun41)-2*a-b fun4 = 0.5*cos(fun42)+0.5*cos(a+b) f = fun1*fun2*fun3*fun4 gongshi=int(f,y,y0,y1) jieguo=int(gongshi,x,x0,x1)
根据您的描述,这是一段 Matlab 代码,其中定义了多个符号变量和函数,并进行了积分计算。根据您的代码,我们可以按照以下步骤进行计算:
1. 定义符号变量和函数:
```
syms x y a b c;
x0=-pi/4;
x1=pi/4;
y0=-tan(c)*tan(23.43*pi/180);
y1=tan(c)*tan(23.43*pi/180);
fun1 = sin(c)*(sin(x)-x*cos(x))/(cos(x)^2+tan(c)^2)^0.5;
fun2 = (0.506-0.476*cos(y))*sin(x-1/3*pi)+0.6609*cos(y)+0.409;
fun3 = (cos(y)-cos(x))/(sin(x)-2*pi/360*x*cos(x));
fun41 = sin(c)*(cos(y)-cos(x))/(cos(x)^2+tan(c)^2)^0.5;
fun42 = 2*asin(fun41)-2*a-b;
fun4 = 0.5*cos(fun42)+0.5*cos(a+b);
```
2. 计算被积函数:
```
f = fun1*fun2*fun3*fun4;
```
3. 对 y 进行一次积分:
```
gongshi = int(f, y, y0, y1);
```
4. 对 x 进行一次积分:
```
jieguo = int(gongshi, x, x0, x1);
```
5. 输出积分结果:
```
disp(jieguo);
```
这样就可以得到积分结果了。需要注意的是,如果符号变量中的参数 $a,b,c$ 没有被赋值,那么积分结果中仍然会包含这些参数,需要根据具体情况进行替换。
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