Control of Underwater Robot Attitude in Wave Based on Fuzzy Sliding Mode Method

When an underwater robot works with its manipulator, it is very critical to keep the position and attitude stable in wave. The modeling, numerical calculus of the rolling motion of a small open-frame underwater robot in wave was discussed. A sliding mode control(SMC) strategy with adaptive fuzzy reasoning is presented to change the rolling response process of the underwater robot by using the two lateral thrusters to reduce the rolling amplitude when the manipulators are working. The results comparing between the simulation and the numerical calculus has shown the effectiveness.There is few analogous research on underwater robot attitudes in wave. Some attempts are made here.     

基于神经网络的滑模控制在水下机器人中的应用

在水下机器人的控制中,对强耦合非线性运动进行精确建模和解析是极其困难的,本文采用神经网络对水下机器人水动力引起的不确定项和干扰的上限进行自适应逼近学习,然后采用滑模变结构方法对水下机器人航向进行控制,并进行了跟踪仿真和静态水池实验,结果表明:该种控制方法具有一定的效果。