Design motion-control, mechanical

See design, motion-control, mechanical and electronic effects drive-system control electric motor electric-motor drive extruder drive-energy consumption injection molding machine-drive system. 

These are a few of the mechanical factors that have much more effect on the electronic design of motion control systems. The electronic engineer must understand the mechanics of motion that are encountered in order for the electronic system to be successful. To decide on electronic and software requirements, it is important factors have to be considered such as product flow and throughput, operator requirements, and maintenance issues. 

Materials in the macroscopic sense follow laws of continuum models in which the nanoscale phenomenon is accounted for by statistical averages. Continuum models and analysis separate materials into solids (structures) and fluids. Computational solid mechanics and structural mechanics emphasize the analysis of solid materials and its structural design. Computational fluid mechanics treats material behaviors that involve the equilibrium and motion of liquid and gases. A relative new area, called multiphysics, includes materials systems that contain interacting fluids and structures such as phase changes (solidification, melting), or interaction of control, mechanical and electromagnetic (MEMS, sensors, etc.). 

Have you ever wondered how pedaling moves your bicycle Have you ever thought about how the disc tray on your CD player opens and closes These processes and many more are made possible by people designing and controlling devices called mechanisms. A mechanism is a device that transmits movements so that the output movement is different from the input movement. Mechanisms can change the movement s speed, its direction, or its type of motion. Motion can be in the form of linear motion, rotary motion, or reciprocating motion. 

This chapter discusses the requirements for personal protective equipment (PPE). It also addresses other control mechanisms and procedures. Engineering controls should be the primary method used to eliminate or minimize hazard exposure in the workplace. Administrative controls must be set in motion prior to the use of PPE. When such controls are not practical or applicable, PPE shall be employed to reduce or eliminate personnel exposure to hazards. PPE will be provided, used, and maintained when it has been determined that its use is required and that such use will lessen the likelihood of occupational injuries and/or illnesses. All personal protective clothing and equipment should be of a safe design and appropriate for the work to be performed. Only those items of protective clothing and equipment that meet National Institute for Occupational Safety and Health (NIOSH) or American National Standards Institute (ANSI) standards are to be procured or accepted for use. 

It is well known that the volume change mechanisms in conducting polymers are complex because the electrical, mechanical, and chemical properties of the material, all of which influence the behavior, are closely coupled [67, 69]. This applies to other kinds of electroactive polymers, especially ionic ones. For precise prediction of the deformation response of the materials, these inextricably linked characteristics should be considered. Such model would be useful for long term motion planning of the machines made of such materials. Simple decoupled models which are proposed in this book are aimed to be utilized for machine design and control. Combination of simple and complex models would help us further understanding of the materials and making use of them for machines. 

From the standpoint of collector design and performance, the most important size-related property of a dust particfe is its dynamic behavior. Particles larger than 100 [Lm are readily collectible by simple inertial or gravitational methods. For particles under 100 Im, the range of principal difficulty in dust collection, the resistance to motion in a gas is viscous (see Sec. 6, Thud and Particle Mechanics ), and for such particles, the most useful size specification is commonly the Stokes settling diameter, which is the diameter of the spherical particle of the same density that has the same terminal velocity in viscous flow as the particle in question. It is yet more convenient in many circumstances to use the aerodynamic diameter, which is the diameter of the particle of unit density (1 g/cm ) that has the same terminal settling velocity. Use of the aerodynamic diameter permits direct comparisons of the dynamic behavior of particles that are actually of different sizes, shapes, and densities [Raabe, J. Air Pollut. Control As.soc., 26, 856 (1976)]. 

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