Sahu Govind N, Law Mohit
Machine Tool Dynamics Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
HardwareX. 2022 Feb 1;11:e00273. doi: 10.1016/j.ohx.2022.e00273. eCollection 2022 Apr.
Machine tool cutting performance is limited by the onset of regenerative chatter vibrations. Chatter damages the machine tool system and must be avoided. Efficacy of models guiding circumvention of chatter in actual industrial contexts remains restricted due to cutting process nonlinearities and due to uncertainties in dynamics of machine tools. To verify chatter models in the presence of nonlinearities and uncertainties and to explore active control of chatter, a mechatronic hardware-in-the-loop (HiL) simulator is presented in this paper. Hardware layer of the simulator has a flexure approximating a flexible workpiece and two actuators to emulate cutting forces and apply active damping forces. Software layer involves control architecture that is to be emulated on the hardware layer. Since HiL simulators offer a non-destructive, repeatable, and safe platform for emulations and active control of chatter, and because this paper presents the design of a validated simulator with all accompanying source files along with build and operating instructions, the research community can build such simulators to investigate other complex chatter phenomena and can also use it as a pedagogical tool. Learnings from building and using such simulators can also be leveraged to characterize and solve problems across other engineering domains.
机床切削性能受到再生颤振振动的限制。颤振会损坏机床系统，必须加以避免。由于切削过程的非线性以及机床动力学的不确定性，在实际工业环境中指导规避颤振的模型的有效性仍然受到限制。为了在存在非线性和不确定性的情况下验证颤振模型，并探索颤振的主动控制，本文提出了一种机电一体化硬件在环（HiL）模拟器。模拟器的硬件层有一个近似柔性工件的挠曲部件和两个执行器，用于模拟切削力并施加主动阻尼力。软件层涉及要在硬件层上模拟的控制架构。由于硬件在环模拟器为颤振的仿真和主动控制提供了一个无损、可重复且安全的平台，并且因为本文展示了一个经过验证的模拟器的设计，包括所有附带的源文件以及构建和操作说明，研究团体可以构建这样的模拟器来研究其他复杂的颤振现象，也可以将其用作教学工具。从构建和使用此类模拟器中获得的经验教训也可用于表征和解决其他工程领域的问题。
