Pump control system: the pump control system conducts rate stepless control according to the change of the displacement of the variable plunger pump or controls the total flow according to the composition of the multivariable pump for liquid supply, so as to carry out the step rate control. Because there is no throttle valve and overflow damage, the efficiency is high. Key for working pressure processing equipment, plastic and plastic machinery equipment and other high-power hydraulic machinery.

The actuator control system changes the independent variable of the actuator according to Oil motor The air displacement can control the total flow according to the multi quantitative analysis of the oil motor composition during operation or the total effective area of the composite hydraulic system can be changed to control the total flow and then the speed. Similar to the pump control system, OMS cycloidal hydraulic motor Class A system has high efficiency because there is no throttle valve and overflow damage. The key is used to move mechanical equipment, working pressure processing equipment and other hydraulic machinery.

In the middle open system, when the main hydraulic reversing valve of the middle open system is in the Chinese position, the hydraulic reversing valve depressurizes the hydraulic oil pump and the liquid returns to the vehicle oil tank at low voltage. This kind of system generally selects variable displacement pump as the oil source; When the hydraulic reversing valve is in the Chinese position, the kinetic energy transmission gradually increases from the low value and easy consumption of basically zero, and the kinetic energy increases after the phase change, OMP cycloidal hydraulic motor Make the working pressure liquid enter the actuator to get rid of the load; When the hydraulic reversing valve is in the middle, the internal leakage is very small. Generally, under the condition that the same function can be achieved, the energy consumption of the middle open control circuit is low. The middle open system is mostly used for working conditions such as intermittent fitness exercise or support point load without expecting to frequently start and stop the transmission device.

For the pilot closed test system, when the main hydraulic reversing valve of the pilot closed test system is in the Chinese position, all the oil holes of the hydraulic reversing valve are closed. If the oil supplied by the variable displacement pump is selected, the gas of the hydraulic oil pump returns to the car oil tank through the high pressure of the speed control valve. When the hydraulic reversing valve is in the Chinese position, the kinetic energy transmission is gradually from the low value, that is, from the large pressure change value of the system, only phase change is required, High torque of hydraulic motor The kinetic energy can be used by the actuator; When the hydraulic reversing valve is in the middle part, it sometimes bears all the working pressure of the system, so the open system is larger in the amplification of internal leakage volume.