Hydraulic energy-saving controller
A controller and hydraulic technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of throttling loss, different loads, increased weight and volume of hydraulic components, etc., to improve load capacity, The effect of reducing gasoline weight and reducing consumption
Inactive Publication Date: 2015-04-22
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
The efficiency of this type of hydraulic drive system is very low. The main reason is that the load of each actuator is different at the same time, and the load of the same actuator is also different at different times. One pump source cannot simultaneously supply power to the loads of multiple actuators. Matching, generally select high-power actuator loads for matching, the current method of controlling the actuator is the proportional throttling control method, which leads to a large amount of throttling loss in the actuator branch with a lower load, resulting in low efficiency
[0004] Inefficiency will cause the following problems: the power requirements of the power source are high, and the weight and volume of the power source will increase; the energy (such as gasoline) required to complete the same work will increase, and the weight will increase; the performance index requirements of the hydraulic components of the system will increase. The weight and volume of the cooling system will increase; the heating of the system will be more serious, the power of the cooling system will become larger, and the volume and weight of the cooling system will increase
Therefore, the inefficiency will seriously affect the load capacity of the mobile robot
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[0024] Example: such as figure 1 As shown, two sets of energy-saving systems are set in this example, and the hydraulic energy-saving controller has three oil ports, one high-pressure oil inlet 1, one low-pressure oil inlet 2 and one oil outlet 9. Each set of energy-saving system has the same structure including high-speed on-off valve 4, one-way valve 5, inertial device 6 and reversing valve 7. In this example, the first energy-saving system includes first high-speed on-off valve 41, second high-speed on-off valve 43, An inertial device 61, a one-way valve and a first reversing valve 71, the second energy-saving system includes a third high-speed switching valve 42, a fourth high-speed switching valve 44, a one-way valve, a second inertial device 62 and a second reversing valve 72. The reversing valve is a two-position three-way high-speed reversing valve with oil inlet ports A and B, and oil outlet port C. The rodless chambers of the two hydraulic pistons of the first inerti...
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A hydraulic energy-saving controller comprises a high-pressure oil inlet 1, a low-pressure oil inlet 2, an oil outlet 9, a high-speed switching valve 4, a one-way valve 5, an inertia device 6, a two-position three-way high-speed reversing valve 7 and an energy storage device 8. PWM signals serve as control signals 3 of the valves in the hydraulic energy-saving controller. The working process is repeated by controlling the opening and closing opportunities of the high-speed switching valve, the oil outlet can unceasingly output stable pressure and flow, and therefore abundant energy of high-pressure oil can be used for doing work, and the energy saving effect can be achieved; the adjustment of output pressure and flow can be achieved by regulating the duty ratio of the PWM signals; in other words, the total input energy can be matched with the energy required for loads all the time by controlling the time of the high-pressure oil inlet and the low-pressure oil inlet, and finally the aims of saving energy and being high in efficiency are achieved.
Description
technical field [0001] The invention relates to a hydraulic energy-saving controller. Background technique [0002] In recent years, mobile robots have made great progress in the fields of structure, perception, path planning, and control, and have realized complex functions such as entertainment services, human-computer interaction, and extreme environment detection. limited, which restricts the practical application of mobile robots. Existing studies have shown that when the output pressure of the power source exceeds 3.5MPa, the hydraulic drive system with the same power has a higher power density than the pure electromechanical drive system. Adopting hydraulic drive system is an effective way to improve load capacity. At present, many research institutes are beginning to try to use hydraulic power system to drive mobile robots, such as BIGDOG and petman developed by Boston Dynamics, KenKen Ⅱ hydraulically driven quadruped robot of Italian Polytechnic University, and hi...
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Login to View More IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 杨军宏尚建忠薛勇王卓罗自荣徐小军
Owner NAT UNIV OF DEFENSE TECH