tailieunhanh - Chapter 1: Electromechanical systems

In the design of any complex system, all the relevant design details must be con-sidered to ensure the development of a successful product. In the development of motion systems, problems in the design process are most likely to occur in the ac-tuator or motor-drive system. When designing any actuation system, mechanical designers work with electrical and electronic systems engineers, and if care is not taken, confusion will result. | Chapter 1 Electromechanical systems In the design of any complex system all the relevant design details must be considered to ensure the development of a successful product. In the development of motion systems problems in the design process are most likely to occur in the actuator or motor-drive system. When designing any actuation system mechanical designers work with electrical and electronic systems engineers and if care is not taken confusion will result. The objective of this book is to discuss some of the electric motor-drive systems in common use and to identify the issues that arise in the selection of the correct components and systems for specific applications. A key step in the selection of any element of a drive system is a clear understanding of the process being undertaken. Section provides an overview to the principles of industrial automation and sections and consider machine tools and industrial robotics respectively. Section considers a number of other applications domains. Principles of automation Within manufacturing automation is defined as the technology which is concerned with the application of mechanical electrical and computer systems in the operation and control of manufacturing processes. In general an automated production process can be classified into one of three groups fixed programmable or flexible. Fixed automation is typically employed for products with a very high production rate the high initial cost of fixed-automation plant can therefore be spread over a very large number of units. Fixed-automation systems are used to manufacture products as diverse as cigarettes and steel nails. The significant feature of fixed automation is that the sequence of the manufacturing operations is fixed by the design of the production machinery and therefore the sequence cannot easily be modified at a later stage of a product s life cycle. 1 2 . PRINCIPLES OF AUTOMATION Programmable automation can be considered to exist .