To provide a network type control system capable of performing process management by a feedback control, maintaining control performance while curbing variation in communication delay time, and a communication delay time control method in the network type control system.
The network type control system comprises: control object equipment for controlling the state of a control object process; a measuring device 20A for measuring a state quantity of the object process; and a control device 40 connected to the control object equipment and the measuring device 20A via a network 30 for performing feedback control of the control object equipment on the basis of a measurement value of a state quantity of the control object process measured by the measuring device. The network type control system has means for calculating a communication delay time in the network, and means for reducing information quantity transmitted to the network for performing the feedback control when the communication delay time exceeds a prescribed value.
| JPH10174479 | SYNCHRONIZATION CONTROL DEVICE |
| JPS5864542 | STATE CHANGE DETECTION SYSTEM |
| WO/2014/136230 | DISTRIBUTED CONTROL DEVICE AND CONTROL METHOD |
YAMANAKA OSAMU
MITSUMOTO NORIFUMI
TAKAGI YASUO
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
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