连杆，主要是四杆机构的仿真，界面设计，以及返回函数的编写，和文本框的设置-Kinetic analysis and dynamic simulation of the planar rod robot in the MATLAB Simulink-based

四连杆机构的运动学仿真。输出四连杆机构各杆的位移、角度、加速度、角加速度等信息。-Kinematics simulation of the four-bar linkage. The output of each of the rod of the four-link mechanism displacement, angle, acceleration, angular acceleration, and other information.