Protection and control devices ppt

... SMB21: I/O Module ID and Error Registers 431 SMW22 to SMW26: Scan Times 432 SMB28 and SMB29: Analog Adjustment 432 SMB30 and SMB130: Freeport Control Registers 432 SMB31 and SMW32: Permanent ... the S7-200 Devices from Heat, High Voltage, and Electrical Noise As a general rule for laying out the devices of your system, always separate the devices that generate high volta...

Ngày tải lên: 13/12/2013, 00:15

... refueled by a robot (left) and a touch-screen terminal for inserting credit card, entering refilling order and printing (right). (From Leondes, C.T., Mechatronic Systems Techniques and Applications, Vol. ... island is guaranteed at all times. Figure 28.33 depicts a refilling station in operation since September 1995 at Fraunhofer IPA. For more than 3 years, the robot has shown its reliabi...

Ngày tải lên: 17/12/2013, 13:15

... by substitution into the differential equation and, as expected, are found to be -2 and respectively. Then x(t) = -2 + + + + and the constants and are determined by the three initial conditions. The ... with the conclusion that -1-j 2 Comparison of Eqs. (3.8) and (3.11) and the result for B show that we have two possible ways to assign a and so that we match the form of Eq. (...

Ngày tải lên: 22/12/2013, 21:18

...  Material: Forged and heat-treatedsteel, galvanised and yellowpassivated. Note: Clampingclawsquicklyspanverydifferentclampingheigths withouttheneedforadditionalsupports and takeupverylittle spaceonthemachinetable.Theyaredesignedformaximum loads and areparticularlysuitableforclampingcutting and  punchingtools. Suppliedwithoutclampingbolts– seepag...

Ngày tải lên: 24/12/2013, 20:16

... and structural vibration of the machine tool and wear, failure, and thermal deformations of the tool (Rangwala and Dornfeld, 1990; Li and Elbestawi, 1996). Currently, commercially available controllers ... sequence of operations and process planning, control of the machines and monitoring of the processes (on/off line), automation, networking and communication systems, and...

Ngày tải lên: 23/01/2014, 06:20

... G., and Wu, C. L., 1996, Feed, speed, and torque controllers for drilling, ASME Journal for Manufacturing Scientists and Engineers, 118, 2–9. 55. Nachtigal, C. L. and Cook, N. H., 1970, Active control ... T., Tlusty, J., and Smith, S., 1992, Use of audio signals for chatter detection and control, ASME Journal for Manufacturing Scientists and Engineers, 119, 146–157. 45. Scho...

Ngày tải lên: 23/01/2014, 06:20

... supervisory control implementation in a through-hole drilling operation. TABLE 6.1 Comparison of Drilling Control Strategies 41 No Controller Feed/Speed Controller Torque/Speed Controller Supervisory Controller Machining ... 122, 1993. 40. Landers, R. G. and Ulsoy, A. G., Supervisory machining control: Design approach and experi- ments, Annals of the CIRP, 47, 301, 1998. 41. Ulsoy, A...

Ngày tải lên: 23/01/2014, 06:20

... servo control of machine variables from fully controlling the process output. Such control does, however, greatly reduce the process variability, and with good production control of material and ... Forming Processes: Monitoring and Control 7.1 Introduction: Process and Control Objectives Process Control Issues • The Process: Material Diagram • The Machine Control...

Ngày tải lên: 23/01/2014, 06:20

... findings and presenting them. 12 Computer Forensics 7. See Steganos, JSteg, Hide and Seek, Steg Tools, and numerous others, all of which can be found at http://www.stegoarchive.com and elsewhere. numerous ... password protection 71 4.11.2 The fallacy of password protection offered by popular commercial software 71 4.11.3 The fallacy of protection by hiding files from view 72 4.1...

Ngày tải lên: 24/01/2014, 15:20

... spindle performance and understand the amount of error contributed by the FIGURE 10.23 Geometry for cosine error. (From Dorf, R. and Kusiak, A., Handbook of Design, Manufacturing, and Automation, ... computed as FIGURE 10.15 Micrometer and caliper comparison for Abbe offsets and errors. (From Dorf, R. and Kusiak, A., Handbook of Design, Manufacturing, and Automation , Jo...

Ngày tải lên: 27/01/2014, 15:20