Abstract: Affective and natural human-computer interaction is a challenging lesson in the field of computer application. According to the theory of need levels of Maslom, this paper develops emotional interaction system for virtual human, discusses physical need, safety need and their influence upon emotion and proposes an affective model combined with the theory of mood information of Siminov. It describes the realization of speech interaction system of virtual human. The results of experiment indicate that virtual human can interact with human in an affective and nature way.

Key words: Virtual human, Speech interaction, Affective computing, Artificial psychology, Service robot

摘要： 计算机能与人类进行具有情感和自然和谐的交互是计算机应用领域一项富有挑战性的课题。该文依据马斯洛的需求层次论构建了虚拟人情感交互系统，讨论了生理需求和安全需求及它们对情感的影响，并结合西米诺夫情绪信息论构建了虚拟人情感模型。还论述了虚拟人语音交互系统的实现，通过实验表明，虚拟人能够和人进行具有情感和自然的交互。

关键词: 虚拟人, 语音交互, 情感计算, 人工心理, 服务机器人