32results about How to "Reduce control energy consumption" patented technology

The invention discloses a hierarchical anti-collision control method for a fixed-wing unmanned aerial vehicle cluster. The method comprises the steps of: S1, dividing a local conflict airspace of an unmanned aerial vehicle into a plurality of hierarchies according to the relative distance between the unmanned aerial vehicle and a conflict object, and constructing a local hierarchical conflict airspace model; S2, acquiring flight state information and expected flight state information of the controlled unmanned aerial vehicle and motion state information of an adjacent unmanned aerial vehicle and an environmental obstacle in a current local airspace in real time, determining a relative state relationship between the unmanned aerial vehicle and the adjacent unmanned aerial vehicle in the local airspace and the environmental obstacle, determining a local conflict airspace level corresponding to the controlled unmanned aerial vehicle at present, and performing conflict detection accordingto the determined local conflict airspace level; and S3, executing collision avoidance according to the local conflict airspace hierarchy currently corresponding to the controlled unmanned aerial vehicle. The method has the advantages that the implementation method is simple, adjacent unmanned aerial vehicles and environmental obstacles can be comprehensively avoided, various collision and dangerous scenes can be covered, the avoiding effect is good, and the like.

The present invention provides a flywheel system rotation speed control method driven by a direct current motor. A given target rotation speed and a real rotation speed are used for calculating error amount, and then a sliding modal variable is calculated; the sliding modal variable is modulated by a low pass filter to obtain equivalent control signals which are taken as input, and a dual-layer self-adaptive algorithm is designed for performing control gain online regulation; and the sliding modal variable and the control gain are inputted into the designed supercoiling control algorithm to obtain the control voltage. Because the closed loop system controlled by the method provided by the invention can be stably regulated to a target rotation speed in a limited time so as to have good robustness and control precision. An effective means is provided for the engineering of the high-precision rotation speed control of a flywheel system.

The invention relates to a method for distributing capacity of a lithium ion battery, which belongs to the technical field of secondary battery manufacturing. The capacity division method of the lithium-ion battery of the present invention comprises the following steps: discharge the fully charged lithium-ion battery to the first discharge cut-off voltage with a current of 0.3-1C at a constant current, and then place it at a constant current of 0.05-0.2C discharge to the second cut-off voltage; the first cut-off voltage is 2.0-2.7V, and the second cut-off voltage is the same as the first cut-off voltage. The capacity division method of the present invention can realize rapid capacity division of lithium-ion batteries, has the advantages of high capacity division efficiency, low energy consumption for environmental control, and can reduce the influence of temperature, make the capacity division more accurate, and improve the efficiency of lithium-ion batteries in groups. Consistency is an efficient capacity separation method suitable for mass production of lithium-ion batteries.

The invention relates to the field of chopsticks processing equipment, in particular to a chopsticks cutting and forming machine, including a machine tool, a feeding mechanism, an intermittent pushing mechanism, a continuous feeding mechanism, an edge grinding mechanism and an intermittent cutting mechanism; the cutting mechanism includes a raw material storage box, a first motor and a pusher assembly; the intermittent pushing mechanism includes a first track, a second motor, a first crank, a first connecting rod and a first pushing slider; the continuous feeding mechanism includes an upper roller set , the lower roller group and the third motor; the edging mechanism includes the second track, the fourth motor and the edging wheel set; the intermittent cutting mechanism includes the fifth motor, the first cam, the third track, the first top Rod, first swing frame, sixth motor and disc cutter, the swing period of the first swing frame is equal to twice the rotation period of the first crank. The chopsticks cutting and forming machine provided by the invention improves the chopsticks processing efficiency, saves costs and reduces energy consumption.

The invention discloses a pilot operated check valve with a big pilot ratio, and relates to the field of hydraulic parts. The pilot operated check valve with the big pilot ratio comprises a valve body; a runner is arranged in the valve body; an oil inlet and an oil outlet are separately formed in positions, at the two ends of the runner, in the valve body; a valve rod used for controlling the runner to be conducted in one way is arranged in the valve body elastically in a sliding manner; a pressure relief way is formed in the valve rod; the two ends of the pressure relief way communicate withthe oil inlet and the oil outlet; a valve core used for controlling the open-close of the pressure relief way is arranged in the pressure relief way elastically; an ejector rod used for ejecting the valve core is connected into the valve rod in a sliding manner; a valve plug connected with the ejector rod is arranged in the valve rod in the length direction of the ejector rod in a sliding manner;the cross section of the valve plug is larger than that of the ejector rod; and a control oil path used for hydraulically controlling the valve plug to slide is arranged in the valve body. The invention solves the problems of high energy consumption of the high-pressure control oil path and high hydraulic impact when the check valve is conducted reversely in the prior art, and by reducing the pressure required by the control oil path, the energy consumption required by the control oil path is reduced, and the hydraulic impact generated when the check valve is conducted is reduced.

The invention discloses a wind power generation double-hydraulic control variable pitch system, which relates to the technical field of wind power generation. By the system, variable pitch control stability and accuracy can be improved, and energy consumption can be reduced; and the system is high in feathering speed. The system comprises a variable pitch base cylinder, an oil supply one-way valve, an oil supply energy accumulator, a cavity A oil inlet throttle valve, a cavity B control valve, a speed control valve, a cavity A hydraulic control one-way valve and a cavity B hydraulic control one-way valve, wherein an external high-pressure oil source is used for supplying oil to the oil supply energy accumulator and the cavity A oil inlet throttle valve through the oil supply one-way valve; a bidirectional lock structure is formed by the two hydraulic control one-way valves; oil outlets of the two hydraulic control one-way valves are connected to two operating cavities of the variable pitch base cylinder respectively; an oil inlet of the cavity A hydraulic control one-way valve is connected with a high-pressure oil source and an oil return pipeline through two control valves respectively; an oil inlet of the cavity B hydraulic control one-way valve is connected to a public port of the cavity B control valve through the speed control valve; and two operating ports of the cavity B control valve are connected with the high-pressure oil source and the oil return pipeline respectively. The system is high in quick feathering response speed.