双臂机器人动力学程序，采用龙格库塔法，提高运算精度。解决了闭链动力学存在约束与负载内力的问题，为后续控制打下基础-Arm robot dynamics program, using the Runge-Kutta method to improve the calculation accuracy. Closed kinetic chain exist to solve the constraint problem with the load internal forces, lay the f