| 摘要 |
PURPOSE:To obtain a controller for a hydraulic elevator which can always provide the stable traveling characteristics with a simple constitution. CONSTITUTION:A controller for a hydraulic elevator is equipped with a hydraulic pump 8 which is connected with a hydraulic jack 2 through a valve 9 and allows the pressurized oil to flow into the hydraulic jack 2, electric motor 7 for revolution-driving the hydraulic pump 8, pressure sensor 16 for the pressurized oil which flows into the hydraulic jack 2, oil. temperature sensor 17 for detecting the temperature of the pressurized oil which flows in the hydraulic jack 2, speed detector 18 for detecting the speed of a car 1, and a speed controller 13 which produces the control instruction value according to the difference between the input signal supplied from the hydraulic pump 8 and a specific speed standard pattern, for the valve 9 so that the car 1 rises and lowers with a specific speed pattern. The temperature and the pressure on start are inputted into the input values of the control instruction values which are set on the start of the elevator, and the control instruction value is outputted, referring the control instruction values which are set previously according to the temperature and pressure on the basis of the above-described input. |
