| 摘要 |
PURPOSE:To make it possible to carry out a delicate operation of the titled actuator by increasing the output of an engine depending on a maximum indicated value of respective indicated values when the fluid pressure actuator is operated at a high speed. CONSTITUTION:In a case where outputs of an accelerator pedal 8a, an operating lever 11q, and a potentiometer 5d of an oil pressure switching valve 5 are inputted in a counter 10 and a fluid pressure actuator 6 is actuated at a low speed, the oil pressure switching valve 5 is manipulated by an indication signal due to a remote operation. In a case where the fluid pressure actuator 6 is operated at a high speed, the output of an engine 8 is increased depending on an accelerator indicated value and a maximum value of respective indicated values corresponding to the magnitude of respective indication signals. As a result, an operation in a range separated and enlarged from both signal operations of the oil pressure switching valve 5 and the engine 8 becomes possible, and hence a delicate operation in the speed control becomes possible.
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