专家控制技术在锌湿法冶炼技术中的应用

针对锌湿法冶炼生产过程自动化控制系统中的实际问题,介绍了专家控制技术在生产过程控制的作用。把模型的优化控制方 法和专家控制系统技术 相结合,能对复杂的生产过程进行有效的实时控制和集中监视,减轻工人劳动强度和提高劳动生产率。     

Physically based dynamic model for control of cavity pressure in injection moulding of amorphous plastics

Abstract

Cavity pressure plays an important role in determining the quality of injection moulded articles. However, the non-linear and time varying behaviour of the process causes difficulties in implementing an efficient control system, since these generally employ linear time invariant design strategies. Conversely, advanced control methods such as self tuning control do not provide physical information about the process. A physically based model has been developed. This model is used to control cavity pressure during the filling and packing phases. Experimental results indicate that this control yields accurate results for the injection moulding of polystyrene. Different control algorithms with different tuning criteria were implemented on a microcomputer to control the cavity pressure. The results indicate that this method is superior to the classical empirical control approach.     

IAEA assistance and training programme for transport security

Abstract

The International Atomic Energy Agency's Office of Nuclear Security is working cooperatively with the US Department of Energy's Global Threat Reduction Initiative, the European Union and Australia to provide transport security assistance to countries throughout the world. Assistance is available to countries in reviewing and upgrading their transport security programmes at all levels:

? national level (regulatory and other government agencies)

? operator level (shippers and carriers).

Assistance is directed at implementing a consistent level of security throughout the life cycle of radioactive material (i.e. the same level of security during transport as when in a fixed facility). Upgrade assistance can include:

? expert advisory missions to provide advice and guidance

? training courses for regulatory, governmental and industry personnel

? transport security awareness

? detailed training on designing and implementing transport security programmes

? planning to identify and prioritise needs (developing security approaches and plans)

? developing model security plans and procedures

? equipment (vehicles, packages, command and control equipment, etc.).

Country visits are now being scheduled to initiate transport security cooperative activities. A training course has been developed to assist countries in developing and implementing transport security programmes. The training course has been given as a national training course (three times) and as a regional training course (three times). The course addresses recommended security provisions for the transport of all radioactive material.     

胶接过程的智能控制

介绍一个兼有ＰＩＤ和专家系统之优点的智能温度控制器在复合材料胶接过程控制系统中的应用，其效能通过实际运行结果加以说明。