National Key Laboratory of Digital Control and System Engineering (DCSELab), Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
Faculty of Electronics and Telecommunication, Saigon University, Ho Chi Minh City, Vietnam.
Comput Intell Neurosci. 2022 Mar 9;2022:2763865. doi: 10.1155/2022/2763865. eCollection 2022.
Biorobotic fishes have a huge impact on the development of underwater devices due to both fast swimming speed and great maneuverability. In this paper, an enhanced CPG model is investigated for locomotion control of an elongated undulating fin robot inspired by black knife fish. The proposed CPG network includes sixteen coupled Hopf oscillators for gait generation to mimic fishlike swimming. Furthermore, an enhanced particle swarm optimization (PSO), called differential particle swarm optimization (D-PSO), is introduced to find a set of optimal parameters of the modified CPG network. The proposed D-PSO-based CPG network is not only able to increase the thrust force in order to make the faster swimming speed but also avoid the local maxima for the enhanced propulsive performance of the undulating fin robot. Additionally, a comparison of D-PSO with the traditional PSO and genetic algorithm (GA) has been performed in tuning the parametric values of the CPG model to prove the superiority of the introduced method. The D-PSO-based optimization technique has been tested on the actual undulating fin robot with sixteen fin-rays. The obtained results show that the average propulsive force of the untested material is risen 5.92%, as compared to the straight CPG model.
仿生机器鱼由于其快速的游动速度和良好的机动性,对水下设备的发展有着巨大的影响。在本文中,研究了一种增强型 CP 模型,用于受黑鱼启发的仿鱼形波动鳍机器人的运动控制。所提出的 CP 网络包括十六个耦合的 Hopf 振荡器,用于产生步态以模拟鱼类游动。此外,引入了一种增强的粒子群优化(PSO),称为差分粒子群优化(D-PSO),以找到一组修改后的 CP 网络的最佳参数。所提出的基于 D-PSO 的 CP 网络不仅能够增加推力以实现更快的游泳速度,而且还能够避免局部最大值,从而提高波动鳍机器人的推进性能。此外,还对 D-PSO 与传统的 PSO 和遗传算法(GA)进行了比较,以调整 CP 模型的参数值,从而证明了所提出方法的优越性。基于 D-PSO 的优化技术已在具有十六个鳍条的实际波动鳍机器人上进行了测试。所得到的结果表明,与直线 CP 模型相比,未经测试材料的平均推力提高了 5.92%。