Xem 1-19 trên 19 kết quả Actuating devices
  • The advances of microelectromechanical systems (MEMS) and devices have been instrumental in the demonstration of new devices and applications, and even in the creation of new fields of research and development: bioMEMS, actuators, microfluidic devices, RF and optical MEMS. Experience indicates a need for MEMS book covering these materials as well as the most important process steps in bulk micro-machining and modeling. We are very pleased to present this book that contains 18 chapters, written by the experts in the field of MEMS. ...

    pdf0p qsczaxewd 22-09-2012 28 8   Download

  • Pneumatic actuators in clude linear cylinders and rotary actuator. They are devices providing power and motion to automated systems, machines and processes. A pneumatic cylinders is a simple, low cost, easy to install device that is ideal for producing powerful linear movement.

    pdf115p ckm0789 11-01-2014 18 2   Download

  • Motion control systems today can be found in such diverse applications as materials handling equipment, machine tool centers, chemical and pharmaceutical process lines, inspection stations, robots, and injection molding machines. Merits of Electric Systems Most motion control systems today are powered by electric motors rather than hydraulic or pneumatic motors or actuators because of the many benefits they offer: • More precise load or tool positioning, resulting in fewer product or process defects and lower material costs.

    pdf478p 123859674 02-07-2012 73 38   Download

  • Piezoelectric materials form the backbone of several components utilized in communication systems, defense systems, industrial automation, medical diagnostics, energy storage and harvesting, and information technology. In high performance piezoelectric applications the material of choice is based upon lead-based composition with Pb(Zr,Ti)O3 (PZT) being the base. Recently worldwide environmental considerations are demanding the elimination of lead-based materials from all the consumer items. This has created urgency for finding alternative to PZT.

    pdf0p nguyenthai_thinh 16-03-2013 38 6   Download

  • Piezoelectricity from the Greek word "piezo" means pressure electricity. Certain crystalline substances generate electric charges under mechanical stress and conversely experience a mechanical strain in the presence of an electric field. The piezoelectric effect was discovered in some naturally occurring materials in the 1880s. However it was not until the Second World War that man-made polycrystalline ceramic ma‐ terials were produced that also showed piezoelectric properties.

    pdf174p lyly_5 22-03-2013 19 6   Download

  • SYM-METRIC ACTUATOR MODELS Sym-metric Actuator . Sym-metric Actuators with Anti-Backlash Feature Shell Cap Sym-metric actuators are available with anti-backlash nuts for applications where a reversal of loading from tension to compression is encountered. Anti-Backlash Features:• Reduction in the vertical backlash between the screw and the worm gear nut to a practical minimum for smoother, more precise operation and minimum wear. • Acts as a safety device, providing a dual nut load carrying unit, when the worm gear becomes worn. • Wear indicator for critical applications.

    pdf20p hiruscar 13-10-2010 50 5   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Design of a series visco-elastic actuator for multi-purpose rehabilitation haptic device

    pdf14p panasonic01 12-12-2011 14 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Design of a series visco-elastic actuator for multi-purpose rehabilitation haptic device

    pdf14p panasonic08 05-01-2012 17 2   Download

  • A sensor is a device that converts a physical phenomenon into an electrical signal. As such, sensors represent part of the interface between the physical world and the world of electrical devices, such as computers. The other part of this interface is represented by actuators, which convert electrical signals into physical phenomena.

    pdf30p longtuyenthon 27-01-2010 85 44   Download

  • Wireless sensor nodes are small, embedded computing devices that interface with sensors/ actuators and communicate using short-range wireless transmitters. Such nodes act autonomously, but cooperatively to form a logical network, in which data packets are routed hop-by-hop towards management nodes, typically called sinks or base stations. A Wireless Sensor Network (WSN) comprises of a potentially large set of nodes that may be distributed over a wide geographical area, indoor or outdoor

    pdf369p nghiasimon 22-09-2012 41 19   Download

  • A sensor is a device that converts a physical phenomenon into an electrical signal. As such, sensors represent part of the interface between the physical world and the world of electrical devices, such as computers. The other part of this interface is represented by actuators, which convert electrical signals into physical phenomena.

    pdf30p longmontran 18-01-2010 50 17   Download

  • Surface Acoustic Wave (SAW) devices are widely used in multitude of device concepts mainly in Micro Electro Mechanical Systems (MEMS) and communication electronics. As such, SAW based micro-sensors, actuators and communication electronic devices are well known applications of SAW technology. Due to their solid state design and fabrication compatible with other modern technologies such as Microwave Integrated Circuits (MIC), MEMS, (Charge Coupled Devices) CCD and integrated optic devices, SAW based sensors are considered to be extremely reliable....

    pdf0p 123859674 04-07-2012 31 10   Download

  • ANSI/ISA-5.1-1984 (R 1992) 6.5 Actuator symbols (contd.) ANSI/ISA-5.1-1984 (R 1992) 33 6.6 Symbols for self-actuated regulators, valves, and other devices 34 ANSI/ISA-5.1-1984 (R 1992) 6.6 Symbols for self-actuated regulators, valves, and other devices (contd.) ANSI/ISA-5.1-1984 (R 1992) 35

    pdf20p hiruscar 13-10-2010 28 9   Download

  • This book reviews a big window of opportunity for piezoelectric ceramics, such as new materials, material combinations, structures, damages and porosity effects. In addition, applications of sensors, actuators, transducers for ultrasonic imaging, positioning systems, energy harvesting, biomedical and microelectronic devices are described. The book consists of fourteen chapters. The genetic algorithm is used for identification of RLC parameters in the equivalent electrical circuit of piezoelectric transducers.

    pdf0p cucdai_1 22-10-2012 40 8   Download

  • Muller, R.S. “Microdynamic Systems in the Silicon Age” Handbook of Micro/Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999 © 1999 by CRC Press LLC Microdynamic Systems in the Silicon Age Richard S. Muller 13.1 Introduction Origins 13 13.2 Micromachining Substrate Micromachining • Surface Micromachining • Polycrystalline Silicon Properties • Tribology in MEMS 13.3 MEMS Structures and Systems MEMS Actuation Forces • MEMS for Microphotonics • Coupling Efficiency 13.

    pdf19p medinova 26-10-2010 42 5   Download

  • Ferroelectricity has been one of the most used and studied phenomena in both scientific and industrial communities. Properties of ferroelectrics materials make them particularly suitable for a wide range of applications, ranging from sensors and actuators to optical or memory devices. Since the discovery of ferroelectricity in Rochelle Salt (which used to be used since 1665) in 1921 by J. Valasek, numerous applications using such an effect have been developed.

    pdf262p ktcn_1 10-07-2012 28 5   Download

  • For energy conversion between electrical and mechanical forms, electromechanical devices are developed. In general, electromechanical energy conversion devices can be divided into three categories: (1) Transducers (for measurement and control) These devices transform the signals of different forms. Examples are microphones, pickups, and speakers. (2) Force producing devices (linear motion devices) These type of devices produce forces mostly for linear motion drives, such as relays, solenoids (linear actuators), and electromagnets.

    pdf21p bk20062011 21-02-2011 45 4   Download

  • Assembling electrical and mechanical parts is a costly and error-prone step in the process of making electronic devices. The Fab@Home team at Cornell is pursuing the holy grail of personal fabrication, the ability to manufacture, on a single 3D printer machine in a single “print job,” an object that contains a battery, actuators, sensors, and a physical “body.” In other words… a robot.

    pdf30p quynho77 13-11-2012 31 2   Download

  • I intentionally left out the whole world of hydraulics. While hydraulic power can be the answer when very compact actuators or high power density motors are required, it is potentially more danger- ous, and definitely messier, to work with than electrically powered devices. It is also much less efficient—a real problem for battery pow- ered robots. There are many texts on hydraulic power and its uses. If hydraulics is being considered in a design, the reader is referred to Industrial Fluid Power (4 volumes) 3rd ed., published by Womack Education Publications.

    pdf0p loixinloi 08-05-2013 14 2   Download

Đồng bộ tài khoản