It was a valued export in Silk Road trading, but the manufacturing process was kept secret. During the Tang Dynasty (618-907) and the Song Dynasty (960-1279), varieties of paper were developed for different purposes.
April 7, 2015 Written by controlguru. Like the P-Only controller, the Proportional-Integral (PI) algorithm computes and transmits a controller output (CO) signal every sample time, T, to the final control element (e.g., valve, variable speed pump).
In the multiplexed system the input node is activated by. the switch and sends a signal along the simple twisted. pair of wires called the network data bus to the master. control module. The master control module then interprets the correct. logic and continues the signal to the output node, which. activates the device.