| 摘要 |
PURPOSE:To shorten the switching time between the start and stop devices by adding a signal generator and a switch contact and making the bias value of a bias signal generator follow said signal generator in a short time. CONSTITUTION:A control system of water supply pumps for theremal power generation comprises water supply control valves A-C of each pump, an adder 3 which compares a request signal 1 for total flow rate of water with the flow rate of water supplied actually, a controller 4, an adder 8 which obtains the deviations between the flow rate request signal of the controller 4 and passed flow rate signals 5-7 of each pump, an analog memory 11, a switch contact 12, a bias signal generator 13, etc. Then a signal generator 15 and a switch contact 16 are added. The contact 16 functions to make the memory 11 follow a real flow rate and also make the bias value of the generator 13 follow the generator 15 in a short time. The memory 11 is separated from the generator 13 and follows the real flow rate when switch contacts 16A-16C are turned off with switch contacts 16'A-16'C turned on respectively. |
