如果 PID 块的采样时间不小于总计时间 的 1/2,那麽 PID 块无法实现对此过程的控制。太大的采样时间会使控制不稳 定 。 采样时将不应大于总计时间的 1/10(差的情况下也不能大于总计时间的 1/5)。例如,如果预计 PV 值会用 2 秒钟的时间到达终值的 2/3
GOODYEAR 569-009-254-002?00 Insta-Grip Hose, 1″X450′, NE
GOODYEAR 535-573-008-004?00 1/4” AUTOGRIP GRAY HOSE 300
HORTON MDU 625 928600 CLUTCH BRAKE, NIB, SEALED
NEXEN MBU 625 928500 CLUTCH BRAKE, NIB
GRAHAM MOTORS & CONTROLS 176B6000 CYCLETROL 150 DC CONT
GENERAL ELECTRIC FVK4100E 100 Amp BUS PLUG ENCLOSURE, N
SOLA ?? 13C15JP 15 kVa GENERAL PURPOSE TRANSFORMER
WIRT AND KNOX 1212-1020 FIRE HOSE REEL, NIB
GE FANUC IC697CHS750E 5-SLOT REAR MOUNT RACK, NNB
MODICON 690MCI00006 690 MCI 000 06 CONNECTOR CABLE, NIB
POWERTRAN B3-1500-1-ENC GENERAL PURPOSE TRANSFORMER, 3.
MANNESMANN DEMAG EKDH WIRE ROPE HOIST TROLLEY WITH MOTO
RINGFEDER CORP HSDA-63W LOCKING ASSEMBLY, NIB
PRECISION DEVICES PDA-400-a1 SURFOMETER, NIB
SICK AGSE 900-1211 PHOTOELECTRIC LIGHT CURTAIN EMITTER,
EDMUNDS CAG COMPUTER-AIDED GAGING