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New Control Techniques Based on State Space Observers for Improving the Precision and Dynamic Behaviour of Machine Tools

机译：基于状态空间观测器的控制技术，提高机床的精度和动态性能

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This paper describes control techniques based on state space observers that have been developed to improve the precision and dynamic behaviour of machine tools. To improve precision, an accelerometer located close to the tool centre point (TCP) is used, so that its position is estimated by an state space observer and used as position feedback instead of the position read by the linear scale. This way, the structural deformation from the slide to the tool is compensated. Dynamic behaviour is improved estimating the acceleration of the TCP by the aforementioned observer and feeding this noiseless signal into the control system, rather than the noisy signal of the accelerometer itself. These techniques provide a simple way to achieve considerable improvements without using complex and expensive TCP position measurement devices. Tests on actual machines have shown that errors produced by deflections between the slide and the TCP can be reduced by 70%.
机译：本文介绍了基于状态空间观测器的控制技术，这些技术已被开发出来以提高机床的精度和动态性能。为了提高精度，使用了一个靠近工具中心点（TCP）的加速度计，以便它的位置由状态空间观察器估算并用作位置反馈，而不是由线性标尺读取的位置。这样，可以补偿从滑块到工具的结构变形。改善了动态行为，可以估计上述观察者对TCP的加速并将该无噪声信号（而不是加速度计本身的噪声信号）馈送到控制系统中。这些技术提供了一种无需使用复杂且昂贵的TCP位置测量设备即可实现显着改进的简单方法。在实际机器上的测试表明，由滑块和TCP之间的挠度产生的错误可以减少70％。

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