Piezo-hydraulic micropositioning system to aid in setup for large components

在之前的研究项目中，已经开发和研究了一种用于大载荷的压电液压微定位系统。采用高压压电陶瓷作动器实现柱塞泵和快速开关阀的功能。通过对不同概念的设计和仿真分析，确定了微定位系统原型实现的系统变体。通过对开环控制的研究和闭环控制策略的开发，保证了系统的高精度调整运动。将微定位系统集成在主动固定板中进行实验研究。因此，可以建立在一个自由度内对重达314公斤的重物进行高精度定位的能力。这些研究为机床中使用的压电液压微定位系统的性能潜力、性能限制和设计标准提供了基本的见解。在提出的知识转移项目中，应将见解转化为具有实际应用场景的工业实践。目的是开发一种原型定位系统，该系统将能够补偿大型工件在轮廓磨削过程中设置后剩余的摆动误差。因此，需要将系统的功能扩展为具有两个自由度的系统。将选择实现的概念。此外，将开发所需的优化定位缸，并对压电液压泵进行设计修改。此外，还研究了低压作动器的应用和自适应控制参数的实现。在项目的最后阶段，将在工业条件下使用开发和研究的微定位系统原型进行验证。

In the preceding research project a piezo-hydraulic micropositioning system for large loads has been developed and investigated. High voltage piezoceramic actuators were used to realize the function of a piston pump and fast-switching valves. Due to the design and simulative analysis of different concepts a system variant for the prototypical realization of the micro-positioning system was identified. The high accuracy of the adjusting movement was ensured by the investigation of the open-loop control and the development of a closed-loop control strategy. The micropositioning system was integrated in an active fixing plate for experimental investigations. Thereby the ability for high-precision positioning of heavy loads up to 314 kg in one degree of freedom could be established. The studies provide fundamental insights into performance potential, performance limits and design criteria of a piezo-hydraulic micropositioning system for a usage within a machine tool.In the proposed knowledge transfer project, the insights should be translated into industrial practice with a practical application scenario. The aim is to develop a prototypical positioning system which will be capable to compensate remaining wobble errors after the setup of large workpieces for the profile grinding process. Therefor the functional extension of the system to a system with two degrees of freedom is required. A concept for the realization will be selected. In addition, the required optimized positioning cylinders will be developed and design modifications of the piezo-hydraulic pump will be executed. Furthermore, to operate the piezo-hydraulic pump an application of low voltage actuators and the implementation of adapted control parameters will be investigated. In the final stages of the project a developed and investigated prototype of the micropositioning system will be used under industrial conditions for validation.