| 摘要 |
PURPOSE:To contrive the removal of a histeresis property of an electric-hydraulic converting valve, by a method wherein either of a feed pressure and a given physical amount, which is a correlation with the feed pressure, is detected, and based on the detecting signal, the maximum value of an electric signal is set. CONSTITUTION:A hydraulic pump 2 is driven by an engine 1 to produce a feed pressure Po. The pressure Po is detected by a pressure detector 10, and a detecting signal EPO is sent to a function generating device 11. The detecting signal EPO is converted into a control signal EPL, being in a functional relation, by the generating device 11 to output it to a control circuit 16. Meanwhile, an external signal for driving an electric-hydraulic converting valve is converted into an electric signal Ei by an input device 5. The control circuit performs a computation based on the EPL and Ei, and a maximum value of an electric signal Eo outputted by the circuit 16 is set to a given value corresponding to the EPL. |
