权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

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

压电液压微定位系统有助于大型部件的设置

基本信息

批准号：
246721852
负责人：
Professor Dr.-Ing. Berend Denkena
金额：
--
依托单位：
Siemens AG
依托单位国家：
德国
项目类别：
Research Grants (Transfer Project)
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/246721852?language=en
关键词：
Piezo hydraulic micropositioning system aid

项目摘要

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.

在之前的研究项目中，已经开发和研究了用于大负载的压电液压微定位系统。高压压电陶瓷执行器用于实现活塞泵和快速切换阀门的功能。由于不同概念的设计和模拟分析，确定了用于微定位系统原型实现的系统变体。通过开环控制的研究和闭环控制策略的开发，保证了调节运动的高精度。微定位系统集成在主动固定板中以进行实验研究。从而可以建立在一个自由度上对重达 314 kg 的重负载进行高精度定位的能力。这些研究为机床内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见解。在拟议的知识转移项目中，这些见解应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，该系统能够补偿在成型磨削过程中设置大型工件后剩余的摆动误差。因此需要将系统的功能扩展到具有两个自由度的系统。将选择一个实现的概念。此外，还将开发所需的优化定位油缸，并对压电液压泵进行设计修改。此外，为了操作压电液压泵，将研究低压执行器的应用和自适应控制参数的实施。在该项目的最后阶段，开发和研究的微定位系统原型将在工业条件下使用进行验证。