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This article presents a model to simulate the dynamics of mirror cutting process. Mirror cutting is used for machining thin-walled workpiece, consisting of an external turning tool and internal boring bar. The thin-wall workpiece and long slender boring bar are easily subjected to vibrations. It is difficult to ensure the processing quality of the thin-walled workpiece for conventional machining methods, such as turning, boring, and milling. Mirror cutting is a simultaneous machining method for internal boring and external turning and has the same normal uncut chips. In this way, the radial cutting force of the workpiece can be counteracted, thereby reducing radial vibration and enhancing the stability of the system. The mirror cutting is a multi-input–multi-output (MIMO) cutting system consisting of external turning and internal boring. The proposed method simulates the mirror cutting by state space model. By using the state space model, it is possible to simulate the MIMO machining dynamic system. The dynamic simulation of the mirror cutting system in the cutting process is realized and verified by comparison with the measured signal.

Computational approaches to affection are an important content of artificial psychology. In this paper, we present a new computational affection model for improving the interaction ability of a virtual agent with its environment. Our affection model consisted of emotion space, mood, biorhythm and personality. With the affection model, our interactive agent can generate plenty of affective behavior autonomously.