| 摘要 |
<p>PURPOSE: To raise the flexibility and reliability of control by directly addressing any channel connected to a multiplexer by a selector, inputting the signal to a multitude of valves and controlling the positions of a plurality of actuators in each channel respectively. CONSTITUTION: A microprocessor 25 outputs multiple-bit binary addresses to an electric actuator 27 via an output bus 26 to drive valves 35, 36 of a multiplexer 21 and selectively and individually energize corresponding channel 23. A solenoid 34 arranged in valves 35, 36 selectively opens and closes the valves 35, 36 in correspondence to the pit of the multiplexer 21 so as to selectively connect a hydraulic control source 22. A solenoid 42 is energized by the output of the valves 35, 36 to selectively control second stage valves 40, 41. Furthermore, upper stage valves 45, 46 are selectively controlled via the energizing of a solenoid 46.</p> |
