Page 623 - Sensors and Control Systems in Manufacturing

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Light-emitting diodes (LEDs) (Cont.): M M
overview, 19–23, 25–26
photoelectric sensors, 134–136 MA (milliamps), 21
task lighting-lamps, 23–25 Machine control, with inductive
visibility, 28–29 proximity sensors, 63
voltage, 30 Machinery fault sensor networks
wavelengths, commonly used, 152 acoustics, 198
diagnostic systems, 196–199
white light, 26–27
Limit switches, 79–80, 133, 411 dynamic machine part fault sensors,
Limited-capability control loops, 325 298–300
Line of purples, 13 flexible manufacturing cell
Line powered control circuits, 80 evaluation sensor networks,
Linear arrays, 278, 382 199–207
Linear compression, 338 motor current signature analysis,
Linear indexing, for manufacturing 197–198
applications, 475–477 overview, 196
Linear instruments, 510 quantifying workpiece quality, 199
resonance analysis, 197
Linear multiple point calibrations,
512–513 temperature, 198
Linear programming, 548 vibration analysis, 197
Linear variable-displacement Machine-vision sensing, 383
transformer (LVDT) sensors, Machining programs, 452–457
407–411 Macotech Machine Tool Co. Inc., 556
Linearity, improving with factory Magellan spacecraft, 1–2
calibration, 348 Magnetic fields, 74, 79
Line-powered burden current, 81 Main article–robotics suite, 423
Liquid flow sensors, 350–355 Main processor unit (MPU), 415
Liquid level sensors Maintenance
capacitive proximity sensors, 64 plant, 242
fiber-optic, 169–170 sensor, 256
process control for petroleum and Make-or-buy-analysis, 533
chemical plants, 353–355 Male pin connector receptacle, 88–89
Listeners, 480 Manufacturing automation protocol
Load powered control circuits, 80 (MAP)
Load release time, 94 bridges, 219–220
Load response time, 94 broadband system, 217–218
Load-powered residual current, 80 carrier-band system, 219
Local area networks (LANs), 215, 246 overview, 216–217
Local-feature-focus (LFF) method, 399 token systems, 220–221
Logic ring, 221 Marketing, 234–235
Long-wave (black-light) light, 21, 23 Mass flow, regulation of, 50
Los Alamos National Laboratory Master industrial terminal, 170–171
(LANL), 317 Master production planning, 238
Low voltage LEDs, 20 Masuoka, Fujio, 10
Lower explosion limit (LEL) Matching faults, software, 201–202
concentration, 358 Material receiving function, 240
Low-pass filter, 522 Material transfer, 242
Low-temperature sensors, 330 Materials
L (peak wavelength), LED, 26 accuracy, 343–344
pk
LS (language system), 253–254 measuring dynamic changes,
Lumens, 19–20, 33, 37–38 312–314
Luminance (brightness), 34–35 Mathematical planning and control
Luminous flux, 33–34, 38 methods
Luminous intensity (candlepower), capital budget, 544
32–39 constraints, 549–551
Luminous intensity value (Iv), 28 cost of fixed asset, 544
Lung tumors, sensors for, 320–321 expected net cash flow, 544
Lux, 20, 35 inventory analysis, 547–548
LVDT (linear variable-displacement linear programming, 548
transformer) sensors, 407–411 objective probability, 542–543