735results about How to "Guaranteed stability and reliability" patented technology

The invention provides a photosensitive drum driving assembly which comprises a gear wheel and an adjusting assembly, wherein the gear wheel is closely fitted at one end of a photosensitive drum; the adjusting assembly comprises a rotary driving force receiving head which extends out of the gear wheel; the adjusting assembly can be arranged in the gear wheel to move in reciprocating translation relative to the gear wheel along the axial direction of the photosensitive drum and a first direction vertical to the axial direction, and an elastic support part and an axial limit part are arranged between the adjusting assembly and the gear wheel; and the rotation driving force receiving head can be rotatably arranged on the adjusting assembly around the axis per se. Compared with the prior art, the photosensitive drum driving assembly allows simple and convenient assembly, and has stable structure performance; and a processing box in which the photosensitive driving assembly is adopted ensures stable disembarking and stable operation and has reliable performance.

The invention relates to a metro station digital twinborn monitoring operation and maintenance system comprising an existing SCADA subsystem; a sensor collection network comprising a plurality of sensors, wherein the sensors are arranged on facilities to be monitored in a metro station; a network camera monitoring unit comprising a plurality of network cameras distributed in the metro station; a server used for achieving data collection, analysis and storage, wherein the server is connected with the existing SCADA subsystem, the sensor collection network and the network camera monitoring unit;a digital twinborn model, wherein the model is a three-dimensional digital model consistent with an actual physical model of the metro station, and the model performs data exchange with the server and displays an actual state of the metro station. Compared with the prior art, the metro station digital twinborn monitoring operation and maintenance system has the advantages of establishing the digital twinborn model to display real-time data from multiple resources through a visual three-dimensional digital model, the actual operation state of the metro station can be reflected more effectively, and the information sharing and data analysis efficiency can also be improved.

The invention discloses an oil return control device, an air conditioning system and an oil return control method of the air conditioning system. The oil return control device comprises an oil separation mechanism and an oil return control assembly, wherein the oil separation mechanism is arranged at an exhaust port of a lower row of exhaust cylinders in a compressor comprising two or more parallel cylinders, and is used for separating and obtaining lubricating oil from exhaust gas of the lower row of exhaust cylinders, and the oil return control assembly is arranged between the oil separationmechanism and an oil pool at the bottom of the compressor, and is used for controlling the lubricating oil to return to the oil pool according to the pressure difference between exhaust ports of thetwo or more exhaust cylinders in the compressor. According to the scheme, the defects that in the prior art, a lower cylinder is prone to wear, short in service life, low in running reliability and the like can be overcome, so that the beneficial effects that the lower cylinder is not prone to wear, long in service life and high in running reliability are achieved.

The invention discloses a bridge support sliding material, which is prepared through following steps: mixing organic resin, fiber, solid lubricant and filler, stirring, pressing and sintering; the weight content of organic resin is 35-99.8%, solid lubricant is 0.1-30%, fiber is 0.1-20%, filler is 0-15%; the organic resin employs politef or super molecular weight polyethylene as resin basic material. The material is characterized by good self-lubricating property and abradability, large bearing capacity, which is two to three times of that of pure PTFE, good creep resistance, low production cost, and wide usage as support bearing for high speed Railway Bridge.

The invention belongs to the field of masks and particularly relates to a comprehensive communication system of a multifunctional mask. The comprehensive communication system comprises an amplifying module, a communication module, a lighting module and a help-calling module and is characterized by further comprising a cylinder-gas-residual raising viewing module and an on-site audio and video recording module. The comprehensive communication system has the functions of amplifying, communication, lighting, help calling, raising viewing of cylinder gas residual and on-site recording and achieves large integration of small products. The using range of the mask is broadened, and using cost of customers is reduced; stability reliability of talkback communication is ensured, and the actual requirements of various different using occasions are greatly met; breathing noises can be effectively restrained, and voice quality in communication is improved; and the residual amount of cylinder gas is effectively indicated, and the system can effectively remind wearers to evacuate timely when the residual amount of the cylinder gas cannot maintain for 10 minutes, so that safety performance of the product is improved. A shooting device is installed, so that conditions of an operation site can be effectively recorded and afterwards treatment is facilitated.

The invention relates to a control system of an opening-closing die motor and a push-out motor of a fully-electric injection molding machine, comprising a computer controller, a PLC (Programmable Logic Controller), an opening-closing die push-out driver, the opening-closing die motor and the push-out motor which are mutually connected. The invention also analyzes the motion characteristics and the dynamic characteristics of a toggle lever mechanism of a five-hinge die-closing double-toggle die closing mechanism object, provides a die protection implementation method of a die closing mechanismunder the driving of a fully-electric motor as well as a die closing mechanism control method and a field oriented control algorithm on the basis of a fuzzy adaptive theory from the angle of a control theory, meets the control requirements on three aspects of the die closing force, the speed, and the position, ensures the reliable closing of the molded die and realizes the opening-closing motion of the die and accurate and stably push-out of products from the die; and the designed DSP (Data Signal Processing) driver ensures that the system has stable reliability under the condition of high load and simultaneously improves the disturbance compensation.

The invention discloses a needle tube type filling machine and a filling method thereof. The needle tube type filling machine comprises a liquid feeding device, a perfusion needle tube connected with the liquid feeding device and capable of extending into a bottle, and an exhaust passage capable of being hermetically communicated with a gap between the outer wall surface of the perfusion needle tube and the inner wall surface of an opening of the bottle, wherein a speed control device capable controlling the exhaust velocity of the needle tube type filling machine is arranged in the exhaust passage. The needle tube type filling machine is used for performing perfusion by extending the needle tube into the bottle so that the air in the bottle can be exhausted along the periphery of the needle tube, then the speed control device is used for controlling the air exhaust velocity to realize the effective control of the perfusion speed to ensure that the speed control during the perfusion is possible, and thus, a special perfusion mode of slow filling-quick filling-slow filling and the like is formed according to needs, and subsequently, foaming phenomena in the process of the perfusioncan be effectively reduced and the filling quality is improved.

The invention relates to the field of dish washing machines and discloses a disintegrating slag self-cleaning and filtering system for a dish washing machine and a dish washing machine. The disintegrating slag self-cleaning and filtering system comprises disintegrating slag filtering components, a water cup with a filtering cavity, a wash pump communicated with the filtering cavity through a pipeline, a drainage structure communicated with the filtering cavity through a pipeline and a flat filter covering the filtering cavity, wherein the disintegrating slag filtering components comprise a column-shaped filter rotationally mounted in the filtering cavity and a disintegrating slag blade tightly mounted in the column-shaped filter; a blowhole used for spraying water toward the column-shaped filter is formed in the water cup; and a self-cleaning spray pipe connected with the blowhole through a pipeline is arranged on the wash pump. According to the disintegrating slag self-cleaning and filtering system and the dish washing machine, water sprayed out from the blowhole flushes away food wastes attached to the disintegrating slag filtering components and drives the disintegrating slag filtering components to perform rotational movement, food waste mixtures and foreign objects in water flow are cut into slag by rotational movement of the disintegrating slag filtering components and then discharged, and further, the self-cleaning effect of the filtering system for the dish washing machine is realized.

The invention discloses a fault tolerant power inverter used for a switch reluctance motor. The fault tolerant power inverter comprises a main switching tube redundant unsymmetrical half-bridge circuit which has same three phases and is connected in parallel between a first and a second buses, a power supply and a storage capacitor; wherein, the first phase main switching tube redundant unsymmetrical half-bridge circuit comprises a first power switching tube, a second power switching tube, a seventh power switching tube, an eighth power switching tube, a first DC solid-state relay, a second DC solid-state relay, a first free wheeling diode and a second free wheeling diode. The stability and the reliability of the switched reluctance motor system are improved by the invention.

The present invention provides a chip for an ink-jet printer and an ink-jet printer. The chip for an ink-jet printer comprises a hollow portion, a memory, two installation and detection terminals and a power terminal connected with the memory. Each installation and detection terminal is provided with an installation and detection contact portion being in electrical contact with a printer contact probe, the power terminal is provided with a power contact portion being electrical contact with the printer contact probe, the power terminal is arranged at the end surface of the hollow portion, the two installation and detection contact portions are arranged at two sides of the hollow portion and installed at the installation direction of a printer along the chip, and the distances between the two installation and detection contact portions and the front end of the chip are smaller than the distance between the power contact portion and the front end of the chip. The chip for ink-jet printer and the ink-jet printer overcome the defects in the prior art and effectively ensure the stable reliability of the usage of the chip.

The invention discloses a cement-based composite material reinforced concrete interface shearing test device. The device comprises reinforced old concrete, a cement-based composite material reinforcing layer sample, a base, a fixing mechanism, a loading mechanism and a supporting threaded rod, wherein the fixing mechanism comprises a movable front baffle plate and a fixed back baffle plate which are connected through a connecting threaded rod, and the old concrete is partially fixed on the base; the loading mechanism comprises a lifting type sliding rail, an orbit type sliding frame, a tension steel cable and a fixed pulley; the bottom of the orbit type sliding frame is level to the combining surface of the cement-based composite material reinforcing layer; the lifting type sliding rail is fixed on the supporting threaded rod in a free lifting way; the orbit type sliding frame can be fixed on the lifting type sliding rail in a sliding manner; the fixed pulley is fixed on one end of the lifting type sliding rail and is integrated with the orbit type sliding frame through the tension steel cable. The device disclosed by the invention is simple and easy to operate, convenient to assemble and test; the testing method based on the device can effectively determine the interface adhesive property of the cement-based composite material reinforced concrete structure.

The invention belongs to the field of overcurrent protection circuit design, and provides an overcurrent protection device and electronic equipment. The overcurrent protection device comprises a switch unit, an overcurrent detection unit and a switch control unit, wherein the switch unit is used for controlling a protected load circuit being connected / disconnected through on / off states; the overcurrent detection unit is used for detecting the overcurrent on a power supply path of the protected load circuit; and the switch control unit is used for maintaining the switch unit being in the on state when the overcurrent detection unit does not detect the overcurrent; when the overcurrent detection unit detects the overcurrent, the switch control unit controls the switch unit being disconnected. According to the overcurrent protection device and electronic equipment provided by the invention, the switch control unit can control the switch unit on according to the external transient triggering or internal control, and then automatically maintains the switch unit being in the on state; the device and equipment have a state latching function; and the on state of the switch unit can be maintained without external triggering, and thus, the stability and reliability of the overcurrent protection device can be ensured.

The invention discloses a hydraulic power type collection mechanism. The hydraulic power type collection mechanism comprises a submarine mining vehicle, a collecting and conveying pipeline and a separation device. A suction inlet is arranged at the front end of the collecting and conveying pipeline. The separation device is connected with a rear output outlet of the collecting and conveying pipeline. Disturbance nozzles are arranged on the front side and the rear side of the suction inlet respectively. A delivery nozzle used for spraying delivered water flow is arranged in the collecting and conveying pipeline. The collecting and conveying pipeline is mounted on the submarine mining device through an adaptive topography compensation device in an up-down floating mode. Sliding plates used for supporting the collecting and conveying pipeline on the surfaces of submarine sediments are arranged on the collecting and conveying pipeline and are positioned below the suction inlet. A gap is reversed between each sliding plate and the suction inlet in the vertical direction. The hydraulic power type collection mechanism has the advantages of high collection efficiency, stability and reliability in working, small environmental disturbance, capability of adapting to submarine topographic environments and geological environments and the like.

The invention relates to the technical field of fire-fighting equipment, in particular to a power transformer fire extinguishing system and a control method. The power transformer fire extinguishing system comprises an equipment protecting room, a fire extinguishing pipe network, multiple fire detectors, point spraying branch control pipe valves and weatherproof porous bundling nozzles; a gas cartridge set, a starting bottle set, a 3D boiling powder storage tank and a fire extinguishing controller are arranged in the equipment protecting room, and the fire extinguishing controller is provided with a multi-feature signal detector, an air speed detector and a reburning detection and alarm controller. The control method comprises the following steps of initialization, fire detection, alarm and fire extinguishment; the fire extinguishment comprises the steps of point fire extinguishing scheme generating, multi-point fire extinguishing scheme generating and full fire extinguishing scheme generating. According to the power transformer fire extinguishing system and the control method, the main pipe network is buried under a terrace, the safety is high, and the stable reliability of the fire extinguishing system is guaranteed; a point fire extinguishing scheme, a multi-point fire extinguishing scheme and a full fire extinguishing scheme are designed according to different fire types, and the fire extinguishing efficiency and the fire extinguishing effect are greatly improved.

The invention provides a continuous reductive atmospheric microwave heating low-temperature cracking furnace structure for urban domestic garbage, which fulfills the purposes of improving the cracking efficiency, promoting the resource utilization level of garbage cracking reclamation substances, and realizing hazard-free treatment. The low-temperature cracking furnace consists of a feeding and garbage gas displacement mechanism arranged on a main body cylinder in a main body part, a garbage preheating and cracking vapor delivery chamber, a garbage water evaporation and heating chamber, a main garbage cracking chamber, a cracking material carbonization chamber, a carbonized material collecting chamber and a carbonized material collecting mechanism. The low-temperature cracking furnace has the advantages of continuously treating the garbage, consuming low energy, having minimum dust discharge amount, particularly avoiding the risks of generating NOx and dioxin, and basically reaching zero emission of the generated NOx and dioxin.

The invention discloses a networked intelligent warehouse status detection control system, and the system comprises a network information layer, an on-site management layer, and an on-site control layer, which are divided into three standard industrial networks from the top to the bottom. The information layer comprises at least one remote computer. The on-site management layer comprises at least one on-site management and control computer and at least one on-site measurement and control host. The on-site control layer comprises at least one measurement and control extension set and terminal equipment or an instrument in communication with the measurement and control extension set. The remote computer is in communication connection with the on-site management and control computer through a network based on a TCP / IP network protocol. The on-site management and control computer is in wired or wireless communication connection with the measurement and control extension set through a USB or a WIFI or a network interface. The measurement and control extension set is in bus data connection or communication connection with the terminal equipment or instrument. The network architecture tends to flatness and standardization, thereby improving the system reliability.

The invention discloses a processing method for smelting TC4 alloy ingots by an electron beam cold-bed furnace. The method includes steps: adopting the electron beam cold-bed furnace for primary smelting to obtain the TC4 alloy ingots; subjecting the TC4 alloy ingots to direct rolling treatment to obtain TC4 alloy plates. A final-state structure of the TC4 alloy plates is an equiaxed structure, and small grain size and excellent mechanical property stability are realized. The method is free of a forging step, has the advantage of short processing route and is especially suitable for preparation of large-size wide plates. Stability and reliability in application of the electron beam cold-bed furnace to TC4 alloy smelting are guaranteed.

The invention relates to the field of automatic agricultural irrigation, in particular to a wireless automatic monitoring irrigation system based on cellular network communication. The system comprises a control center and a plurality of control unit nodes, wherein the control center and a plurality of control unit nodes are connected by a cellular wireless network; a plurality of control unit nodes form a mesh topology structure; an industrial computer for monitoring and controlling and a coordinator for data transmission are arranged in the control center; irrigation data are acquired by the control unit nodes through sensors, and are transmitted to the control center through the cellular wireless network; and the control nodes receive control data returned from the control center through the cellular wireless network as well, and controls open and close of an electromagnetic valve after control data processing. The system can provide an automation monitoring irrigation system applicable to farmland, greenhouse and other environments, so that a user can monitor environment parameters and plant physioecologic parameters of a monitored region in real time, thereby carrying out timed automatic irrigation or automatic irrigation according to actual water demand condition of the environment.

An automatic dumping type medical dustbin is composed of a frame, handrails, crank fixing plates, a dumping hand crank, a crank disc, a connecting rod, a compressing and crushing mechanism, a dustbin,a garbage pushing mechanism, a dustbin fixing plate, wheels, a crank boss and a rotating connecting pipe. The dustbin and the dustbin fixing plate are connected together through the rotating connecting pipe, and the dustbin can freely rotate around the rotating connecting pipe. The crank disc is fixed to the two crank fixing plates. The dumping hand crank is fixedly mounted on the front portionsof the crank fixing plates. The crank boss is fixedly mounted on the rear portions of the crank fixing plates. One end of the connecting rod and the crank boss are connected together, and the other end of the connecting rod is connected with a connecting column on the side face of the dustbin. The compressing and crushing mechanism is mounted above the dustbin. The garbage pushing mechanism is mounted in the dustbin. The automatic dumping type medical dustbin has the beneficial effects that the whole device structure is simple, and operation is convenient; direct contact with medical garbage is avoided; the number of times of garbage dumping is reduced; and the work efficiency is improved.

The invention discloses a concrete tower drum assembly and a stretching method thereof. The concrete tower drum assembly comprises a foundation, a tower drum body, an adapter, a first prestressed tendon and a second prestressed tendon. The foundation is suitable for being arranged below the ground; the tower drum body is arranged on the foundation; the tower drum body comprises a plurality of tower drum sections; the plurality of tower drum sections are sequentially connected along an up-down direction; the plurality of tower drum sections are divided into a first group of the tower drum sections and a second group of the tower drum sections located at the upper ends of the first group of the tower drum sections; the adapter is arranged at the upper end of the tower drum body and connected with the uppermost tower drum section; the first prestressed tendon is arranged in the foundation and the first group of the tower drum sections in a penetrating manner; and the second prestressed tendon is arranged in the foundation, the first group of the tower drum sections, the second group of the tower drum sections and the adapter in a penetrating manner. The concrete tower drum assembly disclosed by the invention is high in stability and reliability; and moreover, the structure of the concrete tower drum assembly is capable of reducing stretching times while ensuring construction safety during a prefabricating process, thus increasing the construction efficiency.

The invention provides a security isolation method for modules in an ARM platform. The method comprises the steps of dividing a Linux kernel space into a trusted kernel space and a non-trusted space, wherein a Linux kernel runs in the trusted kernel space, and the isolated modules run in the non-trusted space; and switching the trusted kernel space to the non-trusted space through a Hypervisor Monitor of an EL2 privilege layer, and when the non-trusted space is switched to the trusted kernel space, switching the non-trusted space to the trusted kernel space by enabling a Trampoline to fall into the Hypervisor Monitor through the trampoline of an EL1 privilege layer. According to the method, by virtue of ARM hardware characteristics, the non-trusted modules are limited more securely and efficiently, thereby ensuring the reliability and stability of a Linux system.

The invention discloses a nano-copper-containing epoxide resin composite material and a preparation method thereof. The preparation method comprises the following steps: sequentially adding a copper precursor, a protective agent, polyalcohol and epoxide resin to a reaction flask, increasing temperature to reaction temperature, and carrying out an in-situ thermal reduction reaction to obtain nano-copper / epoxide composite slurry; and dispersing the nano-copper / epoxide composite slurry into a solvent, adding a solidifying agent, and then solidifying at solidifying temperature to obtain the nano-copper / epoxide resin composite material. Nano-copper granules obtained by utilizing the method are uniformly dispersed in an epoxy matrix, the sizes of the nano-copper granules can be controlled between 50 nanometers and 250 nanometers, the mass fraction of the nano-copper granules can be controlled between 5% and 80%; the prepared slurry is free of impurities in such a way that appropriate precursor, reducing agent and protective agent are selected, and meanwhile, the slurry has good dispersion stability and oxidation stability in the organic solvent. The preparation method disclosed by the invention is simple in process and low in production cost, can be applied to the field of electronic packaging as an embedded type capacitor dielectric material and is suitable for large-scale industrialized production.

The invention discloses an unmanned aerial vehicle remote video pushing method based on a cloud side. Multiple clients, a cloud side video server, a base station, a ground control station and an unmanned aerial vehicle are provided; the real-time pushing and watching of the unmanned aerial vehicle remote video can be realized by means of the cloud-side video server system of the 4G, thereby overcoming the territory and distance limitation, and the demand of simultaneously watching the pushed video by multiple clients can be satisfied; the 4G module is respectively installed on the unmanned aerial vehicle system and the ground station so as to produce two sets of solutions with the same functions and different application scenes, thereby ensuring the reliability and stability of the remotevideo pushing at the cloud side. The current popular video live technology is applied to the unmanned aerial vehicle field, the remote live of the unmanned shot video is performed by sufficiently utilizing the internet and the streaming media technology.

The invention relates to a manufacturing technology of a field effect transistor, in particular to a method for thinning a substrate of a gallium nitride-based microwave field effect device. Aiming at the defects of a substrate thinning technology in the method for manufacturing the field effect transistor in the prior art, the invention discloses a method for manufacturing the field effect transistor, improves the substrate thinning technology of the field effect transistor so as to adapt to the thinning of a high-hardness substrate material, and improve the quality of a substrate process technology, the quality of the substrate and the overall performance of the device. By using the method for manufacturing the field effect transistor, in the manufacturing technology process of the field effect transistor, a carborundum substrate and other high-hardness substrates of the field effect transistor can be etched to be thinned by plasma. The invention can avoid the break of wafers and improve the quality of thinned substrates and is particularly suitable for a manufacturing technology of gallium nitride-based field effect transistor devices.

The invention discloses a reverse control valve, a reverse dosing filling machine and a filling method thereof. The reverse dosing filling machine comprises a base and a liquid supply device arranged on the base, and a bottle covering device and a bottle body lifting device are sequentially arranged below the liquid supply device. The reverse dosing filling machine further comprises a reverse control valve, wherein the reverse control valve is used for exhausting during filling and liquid level control by evacuation after exhausting. Therefore, by switching the air flow direction of the reverse control valve, the exhausting during filling and the liquid level control by evacuation after exhausting can be realized, the two actions can be mutually switched, and the invention has simple structure and convenient operation, and is beneficial to saving the production cost. And, materials covering an air pipe can be rapidly pumped by evacuation, which keeps a height close to the lower end ofthe air pipe, more accurately controls the filling quantity, improves the filling liquid level control accuracy, and is beneficial to ensuring the stability and the reliability of filling.

The invention discloses a laser wire filling welding device and method. The laser wire filling welding device comprises a laser welding head and a wire feeding mechanism; the wire feeding mechanism isfixedly arranged on the laser welding head and is used for front wire feeding with an included angle, between a welding wire and the laser optical axis, being 30 to 75 degrees; according to the laserwire filling welding device, through the wire feeding mechanism, front wire feeding is carried out with the included angle, between the welding wire and the laser optical axis, being 30 to 75 degrees, stability and reliability of laser wire filling welding can be ensured, good welding line forming is obtained, and the product yield and efficiency are improved.

The invention provides a moving object wireless posture monitoring system. The system comprises a power source module, an inertia sensor module, a single-chip-microcomputer module, a wireless communication module and a remote display module. The signal output end of the inertia sensor module is connected with the single-chip-microcomputer module, the single-chip-microcomputer module outputs processed data to the remote display module through the wireless communication module, and posture angle information of the system is directly displayed on a remote terminal. The roll angle, the pitch angle and the yaw angle of the system can be displayed at the same time, so a user can monitor moving conditions of the system in real time and adjust an operation scheme. The system can be used for remote wireless dynamic monitoring of the inclination angle of the system, and has the advantages of achieving continuous monitoring, quick data acquisition and real-time display, being high in precision and the like.

The invention belongs to the field of solid waste treatment, in particular relates to sludge drying equipment based on drying treatment of urban sludge. The sludge drying equipment comprises a drum with an inclined axis, and a driving assembly for driving the drum to rotate along the axis of the drum, wherein the drum is provided with an accommodating cavity for accommodating sludge; the accommodating cavity is arranged in the axial direction of the drum and in a penetrating manner; the feeding end of the accommodating cavity is arranged at the high end part of the drum, and the discharging end of the accommodating cavity is arranged at the lower end part of the drum; the sludge drying equipment further comprises heat supply pipes for supplying heat to the accommodating cavity; the heat supply pipes are arranged in the accommodating cavity; two or more heat supply pipes are arranged in the axial direction of the accommodating cavity; air vent holes communicated with the cavities of the heat supply pipes and the accommodating cavity are formed in the walls of the heat supply pipes. The heat supply pipes of the invention are used as stirring pipes of the whole accommodating cavity while performing the functions of supplying heat and drying. The sludge drying equipment has the advantages of simple structure, easy and reliable operation, effective achievement of purpose of drying existing wet sludge and extremely-high drying efficiency.

Disclosed are a control method, a control system, and a storage medium of a battery pack, and an unmanned aerial vehicle, wherein the battery pack includes at least two parallelly-connected parallel batteries, the control method comprising: obtaining an operating state parameter of the parallel batteries; according to the operating state parameter, controlling a control switch connected to the parallel batteries to perform corresponding operation so as to control the discharge sequence of the at least two parallel batteries. According to the technical scheme, the operating state parameter of the parallel batteries is obtained, and according to the operating state parameter, a switch is controlled to perform corresponding operation, so that the discharge sequence of the at least two parallel batteries is controlled. The fact that the parallel batteries do not form electro-charging overflow on other parallel batteries in an electro-discharge process is ensured, so that the operation stability of battery cores of the parallel batteries is ensured, and the safety and reliability of operation of an unmanned aerial vehicle is guaranteed. The practicability of a battery pack control method is improved, and the method is beneficial for popularization and application in the market.

A cradle head adjusting method, system and device and a cradle head are disclosed. The cradle head is provided with a camera (12) and comprises at least one driving motor (1, 9, 10, 18). The cradle head adjusting method comprises the following steps of obtaining torque information of at least one drive motor (S101); determining the center of gravity of the image pickup device relative to the offset information of the motor shaft of at least one drive motor based on the torque information and the gravity information preset by the imaging device (S103); the headset adjustment method, the pan / tilt adjusting device, the head, and the unmanned aerial vehicle are automatically adjusted according to the offset information (S103), and when the pan / tilt is adjusted, It is difficult to complete the input of the user, and because the human error will affect the accuracy of the offset and offset direction, and thus affect the stability and reliability of the use of PTZ, and thus ensure that the PTZ adjustment Accurate reliability, but also improve the stability of the use of PTZ reliability.