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SDRE- Suboptimal Approach for Robust Control of Multiple Arms Carrying a Load in Cooperation | ||
| AUT Journal of Modeling and Simulation | ||
| دوره 55، شماره 2، اسفند 2023، صفحه 299-316 اصل مقاله (2.46 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/miscj.2024.22649.5337 | ||
| نویسندگان | ||
| Neda Nasiri1؛ Ahmad Fakharian* 1؛ Mohammad bagher Menhaj2 | ||
| 1Department of Electrical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran | ||
| 2The Center of Excellence on Control and Robotics, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran | ||
| چکیده | ||
| In this paper, a new application of State- Dependent Riccati Equation (SDRE) is proposed as a framework to design a robust controller for the system of multiple cooperative arms with parametric uncertainties. The cooperative arms are tracking a trajectory holding a mass. Transforming the complicated robust control design to a parallel auxiliary sub-optimal design, leads to a considerable facility in design and extensive applicability specifically for complex systems. An auxiliary system with a modified performance criterion is firstly introduced. The modification in performance criterion is through incorporation of uncertainties upper bounds obtained from stability proof. Uncertain State- Dependent Coefficient (USDC) regarding joints’ friction for the robotic system is utilized to obtain the auxiliary USDC structure. Two control policies are considered: independent control of each arm and simultaneous control of overall multiple manipulators. The sub-optimal problem for the auxiliary system is solved. The achieved optimal control input for auxiliary system is the robust input for the equivalent uncertain system. Simulation results in both policies verify the effectiveness and satisfactory robustness (30%) of the proposed scheme in load carrying. Moreover, considering the same trajectory, payload and design parameters controlling the overall robotic system is superior with respect to separately controlling each arm. Finally, a comparison study is presented for the proposed scheme and Mixed SDRE-SMC (MiSS) for the overall robotic system carrying the same payload through simulation results. | ||
| کلیدواژه‌ها | ||
| Robust Control؛ Cooperative Manipulators؛ State-Dependent Riccati Equation؛ Load Carrying؛ Dynamic Load Carrying Capacity (DLCC)؛ Mixed SDRE-SMC (MiSS) | ||
| مراجع | ||
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