32results about How to "Solve the problem of low control precision" patented technology

The invention discloses an electronic expansion valve control method and device and an air-conditioning machine set. The electronic expansion valve control method comprises the following steps: detecting the exhaust temperature of a compressor; detecting the air sucking temperature of the compressor; detecting the temperature of a throttle point, wherein the temperature of the throttle point is the temperature of the throttle point after the electronic expansion valve is throttled; selecting a present control strategy from preset control strategies according to the exhaust temperature, the air sucking temperature and the temperature of the throttle point; controlling the opening degree of the electronic expansion valve according to the present control strategy. By adopting the electronic expansion valve control method and device and the air-conditioning machine set, the problem that in the prior art the control precision of the electronic expansion valve is low is solved, and the effect of improving the control precision of the electronic expansion valve is achieved.

The invention discloses a control method for sewage processing process based on the self-organizing neural network, and belongs to the fields of water treatment and intelligent information control. The method mainly comprises adjustment for fuzzy rules by a self-organizing mechanism and self-adaptive learning control of T-S fuzzy neural network. The method comprises the steps that comparison is carried out on the basis of a T-S fuzzy neural network controller; self-organizing adjustment is carried out on the fuzzy mechanism; self-adaptive learning of the neural network is carried out; and the fuzzy rule m at the time k is obtained, and the sewage treatment process at the time k is controlled. The method can be used to adjust the internal structure of the controller in real time according to the environment state, and an object is controlled stably. The self-organizing mechanism is used to adjust the controller structure in real time so that the controller can satisfy environment requirements more effectively; the intelligent control method can be used to control the sewage treatment process stably, so that the quality of output water meet the discharge standard; and the defect that a controller of a fixed network structure is low in environment adaptability is overcome.

The invention discloses rotating speed control method and device, a storage medium and an air conditioner. The method comprises the following steps of determining a current liquid level height of a water tank in a water splashing motor; determining a theoretical target rotating speed of the water splashing motor according to the current liquid level height; and determining a current target rotating speed of the water splashing motor based on the theoretical target rotating speed and in combination with a current environment temperature or a current evaporator temperature of an air conditionerprovided with the water splashing, and controlling the operation of the water splashing motor according to the current target rotating speed. According to the scheme, the problem that the control precision of the water splashing motor is low can be solved, and the effect of improving the control precision of the water splashing motor is achieved.

The invention discloses a servo driving method on the basis of an electric cylinder. The servo driving method comprises the following steps that: an electric cylinder servo driving system is set up; a CPU (Central Processing Unit) board (6) acquires data of an encoder (8) and sends the data to an upper computer (5); an analog-to-digital conversion circuit (7) outputs a control signal of an electric cylinder (1) to a servo driver (2); the servo driver (2) drives an electric motor (3) to rotate; the electric motor (3) drives a speed reducer to rotate so as to ensure the electric cylinder to generate the linear motion; and the upper computer (5) detects the signal of the encoder (8) on the electric cylinder in real time so as to accurately control the protruding length of the electric cylinder. The method solves the problems of low accuracy and long leveling time which are caused by the case that a launching vehicle leveling system is driven by an electro-hydraulic servo.

The invention discloses an air leakage control system of an air preheater. The system comprises a rotor deformation detecting device connected with the air preheater and used for detecting the deformation amount of a rotor of the air preheater, a sector plate lifting device connected with the air preheater and used for conducting lifting operation on a sector plate of the air preheater, a displacement detecting device connected with the sector plate lifting device and used for detecting decreasing displacement of the sector plate, and an air leakage control cabinet connected with the rotor deformation detecting device, the sector plate lifting device and the displacement detecting device and used for obtaining a sealing clearance value of the air preheater through the deformation amount of the rotor and the decreasing displacement of the sector plate and controlling the sector plate lifting device to operate according to the sealing clearance value. The technical problems that in the prior art, air leakage control systems of air preheaters are low in control precision and liable to be damaged and cannot be maintained online are solved.

The invention discloses a preparation method of an absorption layer of a copper-indium-gallium-selenium solar battery. The preparation method comprises the following steps: simultaneously inflating hydrogen selenide gas and inert gas into a chamber, sputtering a copper-gallium target material and an indium target material onto a substrate at room temperature by a magnetron sputtering technology under first power and within a first time period; raising the temperature of the substrate to a preset temperature, and sputtering the copper-gallium target material and the indium target material ontothe substrate by the magnetron sputtering technology within a second time period; increasing the first power to second power, and sputtering the copper-gallium target material and the indium target material onto the substrate by the magnetron sputtering technology under a preset temperature condition and within a third time period. By the preparation method of the absorption layer of the copper-indium-gallium-selenium solar battery, provided by the invention, through simultaneous sputtering of the CuGa target material and the In target material in an H2Se atmosphere, the CIGS absorption layercan be moulded in a sputtering manner in only one step, so that the processing technology is effectively simplified, and the production efficiency and the control precision are improved.

The invention provides a micro-fluidic base plate, and a micro-fluidic structure and a driving method thereof, and belongs to the micro-fluidic technical field in micro-total analysis. A purpose of the invention is to at least partially solve the problem of not high liquid droplet control precision of the existing micro-fluidic structure. The micro-fluidic base plate comprises a substrate, which is provided with a plurality of driving electrodes for driving liquid droplets, wherein various driving electrodes are arranged on the same layer, gaps are formed between the two adjacent driving electrodes, the micro-fluidic base plate further comprises at least an auxiliary electrode arranged on the substrate and used for driving the liquid droplets to move, the auxiliary electrode is at least partially arranged in the gap, and the auxiliary electrode and the driving electrode are arranged in different layers.

The invention discloses a soldering flux flow control device and method. The soldering flux flow control device is connected between a soldering flux storage tank and a soldering flux spray nozzle, and comprises a flow control valve, a flow sensor and a controller. The flow control valve is arranged on a pipeline between the soldering flux storage tank and the soldering flux spray nozzle and used for regulating the flow of soldering flux flowing through the pipeline. The flow sensor is arranged on the pipeline between the soldering flux storage tank and the soldering flux spray nozzle and used for detecting the flow of the soldering flux flowing through the pipeline. The controller is connected with the flow control valve and the flow sensor and used for controlling the flow control valve so as to regulate the flow, detected by the flow sensor, of the soldering flux to be equal to a preset value. By means of the soldering flux flow control device and method, the problem that in the prior art, accuracy of control over the flow of the soldering flux is low is solved, and the effect of improving the accuracy of control over the flow of the soldering flux is achieved.

The invention discloses a head nursing device and system. The device comprises a body for being matched with a head. The body comprises a control circuit, a heating module and a massage module. The heating module is connected with the control circuit and used for conducting heating through emitted far infrared light. The massage module is connected with the control circuit and used for conductingmassaging through generated vibration. The control circuit is used for controlling the heating temperatures of one or more heating pieces in the heating module so as to control the massaging strengthof the massage module. By means of the device and system, the technical problem that the control precision is low when the heating temperatures cannot be locally controlled is solved.

The invention provides a normally-closed gas circuit control valve. The normally-closed gas circuit control valve comprises a valve body, a first lining, an ejector rod, a valve element, a first spring, a second spring, a first sealing ring and a second sealing ring. The first lining is arranged at one end in the valve body, the ejector rod is arranged at the other end in the valve body, and a gasinlet hole, a gas outlet hole and a gas inlet channel are formed in the first lining. The valve element and the first spring are installed in the first lining in a matched mode, so that the first sealing ring on the valve element makes close contact with the inner wall of the first lining. When the valve is switched from the initial state to the final state, the ejector rod is firstly driven to move, and when the ejector rod makes close contact with the second sealing ring, an exhaust channel is closed, and the ejector rod continues to move till the ejector rod abuts against the valve elementand drives the valve element to move so as to open the gas inlet channel and close the exhaust channel. According to the normally-closed gas circuit control valve, the exhaust channel can be cut offbefore the gas inlet channel is opened, the control precision is high, and the problem that potential safety hazards are caused by low control precision of a valve body in the prior art is solved.

The invention belongs to the technical field of robots, and relates to an exoskeleton robot ankle joint with double flexible driving branches. The exoskeleton robot ankle joint comprises a shank fixing block, a constraint branch, a sole plate, a first driving branch and a second driving branch, wherein the sole plate is connected with the shank fixing block through the constraint branch, the first driving branch and the second driving branch are arranged on the shank fixing block, and the sole plate is driven by the first driving branch and the second driving branch to realize dorsiflexion/plantar flexion and introversion/ectropion rotation. The exoskeleton robot ankle joint with the double flexible driving branches has two active degrees of freedom of dorsiflexion/plantar flexion and inward turning/outward turning, the rotation centers of the two joints are highly superposed to the center of the ankle joint of a human body, the structural rigidity is high, the driving force is sufficient, the center of gravity is close to the upper part, and each driving unit is connected with an elastic element in series, so that flexible and safe power output of each joint can be realized.

The motor end cover comprises an end cover shell (10), a bearing hole is formed in the end cover shell (10), a mounting groove (11) is formed in the side wall of the first end of the bearing hole, the mounting groove (11) is used for mounting a sensor, a bush (20) is arranged at the second end of the bearing hole, and the bush (20) is used for mounting a bearing. By adopting the technical scheme of the invention, the problem of low motor control precision caused by unreasonable structural arrangement of the motor end cover in the prior art is effectively solved.

The embodiment of the invention discloses a scraper knife control method, model and device, computer equipment and a storage medium. The scraper knife control method comprises the steps: obtaining curved surface information of a target curved surface at the current moment is obtained; acquiring target coordinate information of a mark point on the scraper knife at the current moment; based on a scraper knife control model, the curved surface information and the target coordinate information, determining a value function corresponding to each control strategy, wherein the scraper knife control model comprises multiple control strategies; and controlling the movement of the scraper knife by using the control strategy corresponding to the maximum value function in the plurality of control strategies. The method can improve the control precision of the scraper knife.