The control system in this section is a technical transformation without changing the original excavator hydraulic system. The pressure sensor can be installed on the hydraulic oil path between the hydraulic pump outlet and the working cylinder or hydraulic motor for pressure measurement. The control system can adjust the engine speed according to the measured pressure.
The running speed of the engine is the controlled quantity of the control system. The measurement of running speed can embed magnetic steel into other rotating parts of engine flying wheel cargo, fix the sensor head near magnetic steel with appropriate support, and accurately feedback the engine running speed to SLR through Hall element. And compared with the actual pressure required engine speed, use. Control algorithm to control the engine throttle, so that the engine speed and hydraulic system pressure in the best working state.
The control of engine speed is carried out by stepping motor to control the throttle of the engine. The total power supply of the control system is controlled by the main power switch of the whole machine, manual control and automatic control coexist, manual priority.