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    • 7. 发明专利
    • Pondage controller of reservoir group
    • 储备集团的潜水控制器
    • JPS5932014A
    • 1984-02-21
    • JP12931383
    • 1983-07-18
    • Hitachi Ltd
    • MIYAOKA SHINICHIROUMATSUMOTO KUNIAKIOONARI MIKIHIKOTATE JINPEI
    • G05B17/00E02B7/20G05D7/06G05D9/12
    • G05D9/12
    • PURPOSE:To reduce the changing frequency of the water intake, the processed water volumn of a filtration plant, etc. and to facilitate the easy control as well as to prevent the exhaustion of a device, by deciding the volume of processed water of the water treatment plant from a cumulative curve, etc. of estimated total requirement of water of a reservoir and then delivering water to the reservoir. CONSTITUTION:The volume of processed water is decided from a cumulative curve, etc. of estimated total requirement of water of a reservoir and the water is delivered to the reservoir. For instance, a water demand estimating device 1 estimates in time eseries the general water demand of plural reservoirs on the basis of the actual demand. Then a calculating device 2 for processed water volume of water treatment plant calculates the planned value for the water intake and total pondage on the basis of conditions of facilities such as the total pondage, the upper/lower limit value of pondage, etc. A planned value storage device 3 stores the planned value of the water intake and the total pondage, and a plan correcting/deciding device 4 decides whether the planned value is corrected or not based on the planned value and actual value of the total pondage. When the correction is needed, a signal is sent to the device 1 to have rescheduling. When no correction is needed, the filtration plant is controlled in accordance with the planned value to actuate calculating devices 5-8 for inflow of reservoir.
    • 目的:减少进水量,过滤设备的加工水量等的变化频率,方便控制,防止设备耗尽,决定水处理水的体积 处理厂从累计曲线等估计水库总需水量,然后向水库输水。 规定:加工水量由储层水估计总需求的累积曲线等决定,水输送到水库。 例如,水需求估计装置1根据实际需求估计多个水库的一般用水需求。 然后,处理水处理厂的处理水量计算装置2根据总沉淀物,沉淀物的上下限值等设施的条件,计算出水量和总沉淀物的计划值。计划 值存储装置3存储进水量的计算值和总积分值,并且计划校正/判定装置4基于总计的计算值和实际值来判定计算值是否被校正。 当需要校正时,将信号发送到设备1以进行重新安排。 当不需要校正时,根据计划值对过滤设备进行控制,以驱动储存器流入的计算装置5-8。
    • 8. 发明专利
    • PREDICTION OF FLOW RATE OF RIVER WATER
    • JPS57184919A
    • 1982-11-13
    • JP6836281
    • 1981-05-08
    • TOHOKU ELECTRIC POWER COHITACHI LTD
    • HATAKEYAMA TAKASHIWAKAMORI FUMIOMIYAOKA SHINICHIROUFUNABASHI SEIJIYUOONARI MIKIHIKO
    • G01F1/00G01W1/14G05D7/06
    • PURPOSE:To raise the prediction accuracy of the flow rate of river water by a method in which the relation between the amount of rain water and the flow rate of river water is approximately calculated by a non-linear relation formula, model parameters are determined by a square average error minimization method, and error due to the difference between amounts of rain water at points and total amount of rain water is absorbed in the variable of internal condition. CONSTITUTION:Actually measured rain water amount ri(t)(i=1-n) at the time t is sent through a transmission line 3i to a river water flow rate predictor 4 every a fixed time interval from rain water amount observatories 21-2n set at pural points in a water collection area. A predicted value of river water flow rate is output from the actually measured values Q(t) and ri(t) of river water flow rate sent from a river water flow rate measurer 5. In this case, the Q(t) is approximated to the secondary item of Volterra series, and its integral nucleus is developed by Lagnerre polynomial. The parameters of developing coefficient, developing item, time constant, etc., are determined by a square average error minimization method for actually measured value and calculated value, and the error resulting from the difference between the amount of rain water at points and the total amount of rain water is absorbed in the variable of internal conditions. Thus, the accuracy of the prediction of the flow rate of river water can be enhanced.
    • 9. 发明专利
    • Pump operation control method
    • 泵操作控制方法
    • JPS57124089A
    • 1982-08-02
    • JP989881
    • 1981-01-26
    • Hitachi Ltd
    • SHIOTANI MAKOTOOKA ATSUKOOONARI MIKIHIKOMORI SHIYUNJIKOMATSU TAKEHIKO
    • F04D15/00F04B49/06F04B49/10
    • F04B49/06
    • PURPOSE:To improve the operational efficiency by connecting a plurality of variable characteristic pumps in parallel or series and setting the delivery of each pump such that the total axial power is at the minimum when the delivery is specified at the specified delivery pressure. CONSTITUTION:A plurality of variable characteristic pumps are connected in series then the operational amount of each pump is calculated to realize the pre- specified delivery flow and the delivery pressure and to control each pump in accordance to said calculated operational amount. In such a control system, the informations concerning to the delivery pressure-delivery flow characteristic curve, axial power-delivery flow characteristic curve, etc. are stored then the variation of the axial power when the delivery flow is varied while maintaining the delivery pressure to the predetermined level is obtained and the delivery of each pump is determined such that the total axial power will be at the minimum when the delivery flow is specified.
    • 目的:通过并联或串联连接多个可变特征泵来提高操作效率,并设置每个泵的输送,使得当在指定的输送压力下指定输送时总的轴向功率为最小。 构成:将多个可变特性泵串联连接,然后计算每个泵的操作量以实现预定的输送流量和输送压力,并根据所计算的操作量控制每个泵。 在这种控制系统中,存储关于输送压力输送流量特性曲线,轴向功率输送流量特性曲线等的信息,当输送流量变化时轴向功率的变化同时保持输送压力 获得预定水平,并且确定每个泵的输送,使得当指定输送流时总的轴向功率将为最小。