首页> 外文期刊>Journal of robotics and mechatronics >Depth Control of Underwater Robot with Metal Bellows Mechanism for Buoyancy Control Device Utilizing Phase Transition
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Depth Control of Underwater Robot with Metal Bellows Mechanism for Buoyancy Control Device Utilizing Phase Transition

机译:利用金属波纹管机构的水下机器人利用相变的深度控制浮力控制装置

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The ultimate goal of this study is to develop a buoyancy control device that utilizes volume change due to phase transition of material between solid and liquid states. This paper describes the depth control method for an underwater robot fitted with the metal bellows buoyancy control devices that we have developed in this study. Four metal bellows buoyancy control devices are installed on an underwater robot. We first measured underwater robot buoyancy change and found that it agreed roughly with theoretical values. We then checked whether the robot could change buoyancy successively so that the robot rises or sinks as commanded. We then conducted a series of experiments on robot depth control in which if the robot depth is more than a certain distance different from the target depth, control devices are either heated or cooled at maximum output. If such a difference is within the threshold, proportional control is applied to develop output in proportion to the distance to the target depth. Experimental results showed that the underwater robot followed varied target depth with a steady-state deviation of a few cm or so, except in some cases of failure.
机译:这项研究的最终目标是开发一种浮力控制装置,该装置利用由于材料在固态和液态之间的相变而引起的体积变化。本文介绍了一种水下机器人的深度控制方法,该水下机器人装有我们在本研究中开发的金属波纹管浮力控制设备。水下机器人上安装了四个金属波纹管浮力控制设备。我们首先测量了水下机器人的浮力变化,发现它与理论值大致吻合。然后,我们检查了机器人是否可以连续改变浮力,以便机器人按照命令上升或下降。然后,我们进行了一系列有关机器人深度控制的实验,其中,如果机器人深度大于目标深度一定距离,则控制设备将以最大输出功率进行加热或冷却。如果这样的差异在阈值之内,则应用比例控制以与到目标深度的距离成比例地产生输出。实验结果表明,除了某些故障情况外,水下机器人可跟踪变化的目标深度,并具有几厘米左右的稳态偏差。

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