Fix derivDistance typo

Author: BikeZhang106

dynsys/@DubinsCar/defineCbf.m

@@ -8,6 +8,6 @@
     d = params.d;
 
     distance = (p_x - xo)^2 + (p_y - yo)^2 - d^2;
-    derivDistance = 2*(p_x-xo)*v*cos(theta) + 2*(p_y-yo)*sin(theta);
+    derivDistance = 2*(p_x-xo)*v*cos(theta) + 2*(p_y-yo)*v*sin(theta);
     cbf = derivDistance + params.cbf_gamma0 * distance; 
 end