巡检机器人在风载荷作用下会发生一定的摆动,从而导致巡检结果准确性和可靠性降低,参考旋翼类飞行器设计了巡检机器人在风载荷下的平衡机构.首先,利用电机的动力学方程推导电机电压和转速之间的传递函数,使用叶素法建立旋翼产生的升力与旋翼转速之间的关系,从而建立平衡机构的输入电压和输出升力之间的联系.其次,分析不同方向的风载荷对巡检机器人工作状态的影响,建立了巡检机器人在横向风载荷下的摆动数学模型.最后,将模糊PID(proportional integral derivative)应用于平衡机构的控制中,开展了巡检机器人的数值仿真和样机实验.结果表明:所设计的平衡机构可以有效抑制巡检机器人在风载荷中的摆动.
Abstract
An inspection robot tends to swing under wind load,which may reduce the accuracy and reliability of inspection results. The balancing mechanism of the inspection robot under wind load was designed with reference to the rotor aircraft. Firstly,the transfer function between the voltage and speed of the motor was derived by using the dynamic equation of the motor,and the relationship between the lift generated by the rotor and the rotor speed was established by using the blade element method,so as to establish the relationship between the input voltage and the output lift of the balancing mechanism.Secondly,the influence of wind load in different directions on the working state of the inspection robot was analyzed, and the swing mathematical model of the inspection robot under transverse wind load was established. Finally,the fuzzy PID (proportional integral derivative) was applied to the control of the balancing mechanism, and the numerical simulation and prototype experiment of the inspection robot were carried out. The results showed that the designed balancing mechanism can effectively restrain the swing of the inspection robot under wind load.
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