Robust position control of machine tools in consideration of disturbance and variant tracking behav-ior

考虑干扰和变化跟踪行为的机床鲁棒位置控制

• 批准号: 394205384
• 负责人: Professor Dr.-Ing. Christian Brecher
• 金额: --
• 依托单位: Forschungsbereich Werkzeugmaschinen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/394205384?language=en
• 关键词: Robust; position; control; machine; tools

To ensure the competitivness companies need to work more productively and therefore production machines and machine tools must fulfil increasing demands on productivity and accuracy. The machine structure can be considered as a dynamic system, which limits the achievable production speed by their damping. As remedy mechanical components with higher quality but also higher acquisition cost can be applied. On the other side controllers can be optimized to minimize the tenden-cy of vibration at higher traverse speeds. Thereby the parameters of the position controller are a compromise between productivity and accuracy, because of their influence on the damping. Aggravating a position depending behavior of feed drives consisting of ball screw drives occurs, which limits the controller parameters to be configured for the worst transfer behavior of all axis. In this project a new approach will be pursued to design a robust position controller with the background of uncertainties concerning a position dependent behavior and disturbances out of process forces.The objective of this project is the development of a method to design a robust position controller, which increases the dynamic of feed drive under the condition of equal workpiece quality. There-fore several variants of robust controllers will be analyzed and a general method to design robust position controllers will be evolved. The effectiveness of the method will be validated by experimental trials at a machine tool.

为了确保竞争力，公司需要更有生产力地工作，因此生产机器和机床必须满足对生产率和精度日益增长的要求。机器结构可以看作是一个动态系统，它通过它们的阻尼来限制可实现的生产速度。作为补救，可以使用质量更高但采购成本更高的机械部件。另一方面，可以对控制器进行优化，以最大限度地减少在较高横移速度下的振动。因此，位置控制器的参数是生产率和精度之间的折衷，因为它们对减振有影响。由滚珠丝杠驱动器组成的进给驱动器的位置依赖行为加剧，这限制了要配置的控制器参数以实现所有轴的最差传输行为。在本项目中，将寻求一种新的方法来设计具有不确定性的位置控制器，该不确定性涉及与位置相关的行为和来自过程力的干扰。本项目的目标是发展一种设计鲁棒位置控制器的方法，从而在相同的工件质量条件下增加进给驱动的动态量。因此，将分析几种不同形式的鲁棒控制器，并发展出一种设计鲁棒位置控制器的一般方法。该方法的有效性将通过在机床上进行的实验试验来验证。

项目成果

Model predictive controller for machine tool feed drives

• DOI: 10.1109/iccar.2018.8384658
• 发表时间: 2018-04
• 期刊: 2018 4th International Conference on Control, Automation and Robotics (ICCAR)
• 作者: Thomas Berners;A. Epple;C. Brecher

Automatic System Identification of Forward Feed Drives in Machine Tools

机床中正向进给驱动的自动系统识别

• DOI: 10.1007/978-3-030-03451-1_15
• 发表时间: 2019
• 期刊: Advances in Production Research
• 作者: S.; Berners;T.Epple;Brecher
• 通讯作者: Brecher

Optimal Loop Shaping of Position Controls of Feed Axes in Machine Tools with Position-Dependent Behavior

具有位置相关行为的机床进给轴位置控制的最佳循环成形

• DOI: 10.1109/iemdc.2019.8785323
• 发表时间: 2019
• 期刊: 2019 IEEE International Electric Machines & Drives Conference (IEMDC)
• 作者: S.; Berners;T.Epple;Brecher
• 通讯作者: Brecher