233results about How to "Flexible adjustment" patented technology

The invention relates to a hob cutter tool with a coating, wherein the coating is produced by a physical vapor deposition method, in which in a coating chamber in an atmosphere containing nitrogen, an arc discharge is generated in each case between at least one anode and at least one pure Al cathode on the one hand, and at least one pure Cr cathode on the other hand, and in this way, Al and Cr are vaporized from the cathode, in which the hob cutter tool to be coated is rotated in the coating chamber, wherein the tool is subsequently guided past the at least two cathodes, and in which the vaporized Al and Cr is deposited in atomic or ionized form together with nitrogen from the atmosphere containing nitrogen onto the hob cutter tool led rotating past the cathodes. The coating has a multiplicity of layers, composed of (AlCr)-nitride, arranged on top of each other, wherein the multiplicity of layers is formed from two layer types differing with respect to their Al:Cr ratio, wherein a first layer type has an Al:Cr ratio in the range of 55:45 to 65:35, and a second layer type has an Al:Cr ratio in the range of 70:30 to 74:26, and wherein the two layer types alternate with each other in the coating, wherein each of the layers, in turn is formed from a multiplicity of nanolayers arranged on top of each other, and wherein the coating is connected to the tool base body using a bonding layer. Furthermore, the invention relates to a method for recoating such a hob cutter tool.

The invention discloses a multifunctional cleaning mechanism for city cleaning. The multifunctional cleaning mechanism comprises a support, a horizontal cleaning brush, and two side cleaning brushes, wherein the support is provided with a connecting seat which is connected with a manipulator, the horizontal cleaning brush comprises a horizontal brush holder arranged at the front end of the support, a brush plate rotating shaft of which the upper end is arranged on the horizontal brush holder, and driven to rotate by a brush plate rotating mechanism, a horizontal brush plate arranged at the lower end of the brush plate rotating shaft in a sleeving manner, and horizontal brush bristles arranged at the bottom surface of the horizontal brush plate; the two side cleaning brushes are symmetrically arranged on the left side and the right side of the support, and each side cleaning brush comprises a side brush rack of which one end is hinged to the support and driven to swing by a swing mechanism, a side brush shaft arranged on the side brush rack and driven to rotate by a brush shaft rotating mechanism, and side brush bristles, and the side brush shaft is provided with multiple rows of the side brush bristles arranged uniformly in the circumferential direction. The multifunctional cleaning mechanism disclosed by the invention can be applied to cleaning guardrails, roads, walls and billboards, and are diverse in functions and flexible to adjust.

The invention discloses a safety management and control method, apparatus and system for an Android system. The method comprises the steps of receiving a safety management and control strategy regulation instruction or a terminal software version upgrade instruction; and according to the safety management and control strategy regulation instruction or the terminal software version upgrade instruction, dynamically sending a corresponding safety management and control strategy file or terminal software version upgrade file to a target terminal device. According to the safety management and control method disclosed by the invention, a complete and firm trust chain is formed between a hardware trust root and a digital certificate center of a safety management and control server; and compared with the prior art, by the credible interaction process between modules, not only is an effect that an Android terminal cannot be cracked on software achieved, but also the progresses of flexibly regulating a terminal safety strategy and credibly upgrading a terminal software version are obtained, user experience is improved when safety management and control are ensured, and cost of subsequent upgrade and maintenance is reduced.

The invention discloses a tubular bus-bar fixing fitting. According to the tubular bus-bar fixing fitting, adjusting rollers are assembled on the wall of a locating hole, wherein each adjusting roller rotates around the axis extending in the direction of the tangent to periphery. Each adjusting roller is provided with a contact portion which is located in the locating hole and in contact with the peripheral surface of a tubular bas-bar. When the tubular bus-bar fixing fitting is used, the adjusting rollers can guide the tubular bus-bar to move in the axial direction of the locating hole through rotation of the adjusting rollers, and therefore the effects that the tubular bus-bar is loosened or fixed and it is guaranteed that the tubular bus-bar can be flexibly adjusted are achieved. In addition, due to the fact that during adjustment, the adjusting rollers cannot influence length adjustment of the tubular bus-bar, the problem that in the prior art, a fixing fitting for loosening and fixing influences the movement adjustment of the tubular bus-bar severely is avoided, the adjustment range of the tubular bus-bar is expanded, and the flexibility of adjustment of the tubular bus-bar is improved.

The invention relates to a power plant cooling system which improves the cooling efficiency by a residual heat refrigeration way, in particular to a cooling system which is used for the power plant, carries out the refrigeration by the residual heat of a steam turbine and utilizes the prepared cold water to cool the circular cooling water of the steam turbine further. The cooling system comprises a steam condensed water circulation consisting of a steam turbine, a steam condenser, a condensed water circulation pump and a combustion boiler, and a steam cooled water circulation consisting of a steam condenser, a cooling tower and a cooled water circulation pump. The cooling system is characterized in that a lithium bromide refrigeration unit is added; a high pressure generator of the lithium bromide refrigeration unit is arranged between the steam turbine and the steam condenser so as to lead the steam to become the heat source of the unit; the unit also comprises a refrigerant water tank which can store the cold energy; furthermore, the refrigerant water tank is connected with all air conditioners of the central air conditioning by pipelines; and the refrigerant water tank is arranged between the steam condenser and the cooling water circulation pump so that the refrigerant water is used for supplying the coldness to the central air conditioning or further cooling the circular cooling water of the steam turbine. The cooling system solves the problem that the residual heat of the power plant is cooled and wasted and has the advantages of high cooling efficiency, saving energy, being capable of supplying the cold source for the central air conditioning and the like.

The embodiment of the invention discloses a set top box test method. The method includes the steps that an adjusting instruction is sent to a test adjusting device so that the test adjusting device can adjust test conditions of a set top box according to the adjusting instrument; at least one test image output by the adjusted set top box is obtained on the test conditions, and the test image is compared with a preset reference image to obtain a work state of the set top box. The invention further discloses a set top box test device and system. By means of the set top box test method, device and system, the test conditions of the set top box can be flexibly adjusted, and test efficiency is improved.

The invention relates to a machine side oven door of stamped coke ovens and an arrestment process and a device of smoke and dust from oven top, the process and device interflow two plumes of smoke in a flap valve which is provided with double nip via a smoke control assembly of the machine side oven door and a smoke dust control assembly of the oven top, and lead the smoke and dust which are interflowed by the process and device into an earth dust elimination station via the flap valve which is provided with double nip. By comparison with the prior art, the invention has the advantages that the process achieves the smoke dust arrestment of the machine side oven door of a stamped coke oven and the oven top via the smoke control assembly of the oven door arranged at the top portion of the machine side and a moveable smoke control assembly of the oven top of a smoke guiding car, and lead the smoke and dust into the earth dust elimination station, thereby controlling the spreading of the pollution to the utmost extent.

The invention relates to a testing device. The testing device is used for detecting the local rigidity and anti-sag ability of the white car body of a car. The testing device comprises a measuring unit, the measuring unit is connected with a posture adjustment mechanism, the posture adjustment mechanism comprises a first rotary seat and a second rotary seat, a first rotation drive mechanism is arranged on a stand, the first rotation drive mechanism is connected with the first rotary seat and drives the first rotary seat to rotate, the first rotary seat is provided with a second rotation drive mechanism, and the second rotation drive mechanism is connected with the second rotary seat and drives the second rotary seat to rotate. The measuring unit located on the rotary seat can be adjusted flexibly so as to enable the measuring end on the measuring unit to apply load to the plate surface of the car body to be tested, and load and displacement value measured by the measuring unit are fed back to a computer to analyze so as to obtain the local static rigidity and anti-sag ability of the white car body; the testing device is flexible, high in automation level and high in measuring precision.

There are provided a sampling filter that enables a filter characteristic to be adjusted flexibly, and a radio communication apparatus equipped with this sampling filter. A sampling filter apparatus (100) is equipped with four integration units (150-1 through 150-4) corresponding to the number of filter taps, and some of the integration units (150-1 through 150-4) include an integrator having an MEMS structure. By this means, a charge amount (accumulated charge amount) of a received signal integrated by an integrator can be adjusted by adjusting the capacity of an integrator having an MEMS structure. A received signal amount emitted from an integration unit can also be adjusted by adjustment of the integration amount of a received signal, enabling the filter characteristic of the sampling filter apparatus (100) to be adjusted flexibly.

A method for assembling spherical hinge rubber elastic element comprises the following steps: pressing an elastic body composed of elastic rubber body and metal internal sleeve into metal outer sleeve, then pressing the metal holder into the metal outer sleeve, turning the side of metal outer sleeve, forcing the metal holder to compress the elastic rubber body during the process of turning side so as to realize the pre-compression stress of elastic rubber body of spherical hinge rubber elastic element. The spherical hinge rubber elastic element comprises a metal internal sleeve, a metal outer sleeve, an elastic rubber body and a metal holder. The elastic rubber body and metal internal sleeve are vulcanized to be elastic body, which is pressed in the metal outer sleeve. A turned-over edge is on the metal outer sleeve; the metal holder is pressed at the outer edge of the elastic rubber body and covered by the turned-over edge of the metal outer sleeve. The advantage of the invention is that the radial and axial pre-compression stresses can be changed, so the radial and axial stiffness ratio can be regulated flexibly.

The invention discloses a ground observation satellite task planning method based on a simulated annealing algorithm. On the premise that the space mission requirement and data reception resources areconsidered comprehensively, a universal ground observation satellite constraint processing method is designed by combining a satellite load use constraint rule; and task conflict elimination is carried out based on a simulated annealing algorithm and allocation of the satellite effective load resources is optimized, so that an objective of utilizing space resources fully is achieved. According tothe invention, the ground observation satellite resource optimization allocation problem is solved quickly by using an intelligent optimization algorithm; because of separation of the algorithm and the constraint checking, the algorithm replacement or constraint test method adjustment becomes more flexible; and the constraint checking employs the assembling service mode, so that the versatility and extensibility are enhanced.

The invention discloses a calculation method for the cutter torque of a composite soil pressure balanced shield machine in rock and soil mixing geology tunneling. The calculation method comprises thefollowing steps that: independently calculating the following torque: torque generated by hobbing cutter rock breaking, frictional resistance torque generated by the tunneling extrusion of a contact part of a cutter panel and a soft soil layer, frictional resistance torque generated by the covering burial depth of the contact part of the cutter panel and the soft soil layer, the stratum resistancetorque of a cutter cutting soil body, frictional resistance torque between the side surface of the cutter and soft soil, frictional resistance torque T6 between the side surface of the cutter and rock and the stirring resistance torque of a stirring arm in a soil cabin; and calculating the tunneling cutter torque. By use of the calculation method, the cutter torque of the composite soil pressurebalanced shield machine in the tunneling process of the rock and soil mixing geology can be quickly and accurately calculated, and a calculation result is accurate and reliable. In addition, torque parameters can be flexibly regulated according to the change of a geological condition and tunneling speed at any time, and a reliable data basis is provided for setting and regulating the cutter torqueparameters in real time in the design and construction process of the dynamical system of the composite soil pressure balanced shield machine equipment.

The invention discloses an MOS (Metal Oxide Semiconductor) formation method and a threshold voltage adjustment method thereof. The MOS formation method comprises the steps of: forming a grid structure on a semiconductor substrate; penetrating the grid structure to carry out second iron injection to form an ion diffusion area for adjusting threshold voltage and a bag shaped injection area; carrying out ion injection at two sides of the grid structure and in the semiconductor substrate to form resource/drain electrode extension areas and resource/drain electrodes; and annealing the semiconductor substrate, wherein the injection quantity and dosage of second ion is determined by the MOS threshold voltage. The method is applicable to the threshold voltage adjustment of long-channel and short-channel components without adding an extra well to separately perform parallel threshold voltage adjustment to components with different size, thereby realizing simple and flexible threshold voltage adjustment, shortening production process cycle, and saving cost.

The embodiment of the invention provides an optical fiber serial data communication method. The method comprises the following steps: adding a standard sending clock signal in a data frame, wherein the standard sending clock signal comprises high level signal and/or low-level signal with preset amount, and a data receiving determines a sampling clock cycle according to the received standard sending clock signal when receiving the data frame, thereby generating a corresponding sampling clock signal; and sampling the data part of the data frame by using the sampling clock signal so as to acquirea corresponding data packet in the data frame. Since the data frame contains the standard sending clock signal, the data receiving end can self-adaptively generate the corresponding sampling clock signal according to the standard sending clock signal to realize the receiving of the data frame whether the data sending end sends the data frame in any communication rate; the data sending end can flexibly adjust the communication rate of the data frame, and the data receiving end can self-adaptively receive the data frames in different communication rates.

A solar energy semiconductor air conditioning system relates to air conditioning apparatus for room refrigeration and heating by using solar energy and semiconductor. refrigeration and heating module, comprising semiconductor refrigeration and heating module, solar energy optical-electrical converter which supplies power for semiconductor refrigeration and heating module, energy accumulation device and digital controlled matching unit to which is electrically connected to solar energy optical-electrical converter, energy accumulation and semiconductor refrigeration and heating module. The solar energy optical-electrical converter is comprised of several multi-silicon crystal panel which are connected in series or paralleled; the semiconductor refrigeration and heating module is consisted of one or several model which consists of fixed carrier and several refrigeration and heating modules. The invention with simple and compact structure is easy to extend and has good refrigeration and heating effects, saves energy, and it has effectively solved the problems exist in present technology that the structure is complex and practical use is unsatisfied.

The invention belongs to a field of flight control technology and discloses an emergency return landing speed command set design method. The method includes (1), constructing a grid of mass, rolling angle, airport height, height and speed parameters, calculating an attack angle, an elevator, a lift-drag ratio, a track angle and a submerge rate of constant speed gliding of an aircraft, determining the maximal lift-drag ratio rate and the idle gliding maximal available speed changing along with mass, rolling angle, airport height and height, dividing a speed range between the maximal lift-drag ratio rate and the idle gliding maximal available speed into N+1 parts, adding the maximal lift-drag ratio rate and the idle gliding maximal available speed for creating a N+2 grade speed command set, wherein the content of each grade of the speed command set includes the attack angle, the elevator, the lift-drag ratio, the track angle and the submerge rate corresponding to the speed of said grade; (3) recording the N+2 grade speed command set by the aircraft, and selecting an appropriate speed command set grade for execution according to the mass, the airport height, the height, the speed and the distance between the aircraft and the airport when emergency aircraft return landing is required.

The invention relates to a micro-motion stepless speed regulation grinding device for a common big vertical lathe, which comprises a two-dimensional regulation mechanism, a hand feeding mechanism, a lifting mechanism of a grinding head and a grinding head of an electric main shaft. The two-dimensional regulation mechanism connects a support body, a first connector, a second connector and a mounting plate of a guide rail sequentially by two pairs of swivel bearing pairs and one pair of dovetail pairs and realizes the two-dimensional regulation of the entire device; the hand feeding mechanism realizes microfeed by the transmission of the two pairs of gear pairs; the lifting mechanism of the grinding head drives one pair of gear pairs by a motor, and then the gear pairs push a lead screw thread pair with a linear guide rail, thereby realizing the up-and-down lifting of the mounting plate of the electric main shaft; and the grinding head of the electric main shaft is formed by sequentially connecting an electric main shaft seat, the electric main shaft, an Morse taper shank and a grinding wheel. The invention realizes that a grinding function is realized on the common big vertical lathe, the grinding range is 0 to 10000rpm, and the minimum feed amount of the hand feeding mechanism is 0.0005mm.

The invention discloses a novel pediatric tablet cutting and grinding device, which comprises a No. 1 shell and a No. 2 shell. The bottom of the No. 1 shell is hinged with a plastic cover. The top of the No. 1 shell is provided with a cavity, and A metal grinding disc is clamped in the cavity. The top of the No. 1 shell is screwed to the bottom of the No. 2 shell. There is a mounting hole on the outer wall of the top of the No. 2 shell, and a metal sleeve is inserted into the mounting hole. The outer wall of the metal sleeve is provided with a limit ring, the inner wall of the metal sleeve is welded with a metal partition, and the bottom end of the metal partition is fixed with a motor through a bolt, and the bottom end of the output shaft of the motor is fixed with a grinding head through a bolt. The battery plate is fixed on the top of the separator by bolts, the top of the metal sleeve is sleeved with a plastic cap, and a push switch is clamped in the middle of the top of the plastic cap. The invention can cut the tablets into different sizes to meet the demands of dispensing medicines in different doses, and is convenient to operate, more time-saving and labor-saving, and more hygienic.

The invention relates to a reaction device for fluidized bed catalyst performance evaluation, which mainly solves the problems that during the fluidized bed catalyst performance evaluation, the device form is single, and the purpose can not be flexibly regulated. The reaction device for the fluidized bed catalyst performance evaluation adopts the technical scheme that the reaction device mainly comprises a regenerator 4, a first reactor 10, a second reactor 15 and a lifting pipe 12, wherein the lower part of the regenerator 4 is connected with an inlet of a catalyst flow rate control valve 6, an outlet of the catalyst flow rate control valve 6 is connected with the first reactor 10, the lower part of the first reactor 10 is connected with an inlet of a catalyst flow rate control valve 13, an outlet of the catalyst flow rate control valve 13 is connected with the second reactor 15, the lower part of the second reactor 15 is connected with an inlet of a catalyst flow rate control valve 17, an outlet of the catalyst flow rate control valve 17 is connected with an inlet of the lifting pipe 12, and an outlet of the lifting pipe 12 is connected with the regenerator 4. The problems are perfectly solved, and the reaction device can be used in the fluidized bed catalyst evaluation.

The present application provides a game difficulty adjustment method and device, which are applied to a game management server. The method comprises the following steps of: real-time monitoring the game completion status of the target account in the current game stage according to the current game difficulty, and obtaining the game data of the target account when the game completion status is monitored; calculating a target comprehensive strength score corresponding to the target account number according to game data of the target account number; obtaining the corresponding historical comprehensive strength score of all game accounts in the preset time period, and compare the target comprehensive strength score with the obtained historical comprehensive strength score to obtain the rankingresult corresponding to the target comprehensive strength score; the current game difficulty is adjusted according to the obtained ranking result, and game content matching the adjusted game difficulty is provided in the next game stage. The method can flexibly adjust the game difficulty, balance the game strength and the game difficulty of the player, and ensure the game experience of the playerand the player attraction of the game.

A material grabbing flexible gripper suitable for various structure styles relates to a material grabbing flexible gripper and solves problems of cost increase and production efficiency reduction due to the employments of mechanical grippers with various structural shapes or sizes when material with various shapes or sizes is grabbed by a robot gripper in the prior art. The material grabbing flexible gripper comprises a gripper assembly (1), a lead screw (2), a servo motor (3) and a supporting rack body (4), wherein the servo motor (3) is installed on one side of the lower end of the supporting rack body (4); an output end of the servo motor (3) is connected with one end of the lead screw (2); the other end of the lead screw (2) is connected with the supporting rack body (4); and the gripper assembly (1) is movably installed on the lead screw assembly (2). Material with various structure styles can be grabbed.

The invention discloses a service life tester of a value execution apparatus. A supercharging assembly, a hydraulic assembly, a high-pressure oil cylinder, a friction clutch load torque device, a dynamic torque sensor, and an angle encoder of the service life tester are successively connected. The angle encoder is connected with the value execution apparatus to be detected. The supercharging assembly supercharges hydraulic oil. The hydraulic assembly outputs pressure to the high-pressure oil cylinder and controls the pressure. An oil cylinder compacting member is disposed in the high-pressure oil cylinder and converts vertical compaction force into torque load in cooperation with the friction clutch load torque device and the value execution apparatus is tested through the dynamic torque sensor and the angle encoder. By means of the cooperation of the friction clutch load torque device and the oil cylinder compacting member in the high-pressure oil cylinder, the axial vertical compaction force of the high-pressure oil cylinder is highly efficiently converted into the load torque of the value execution apparatus, and thus comprehensive tests can be performed on multiple key positions of the value execution apparatus.

The invention discloses an elevator traction wheel slipping amount detecting device and method. The device comprises an elevator traction system, an image acquiring device, a wireless transmission device and a monitoring center; the elevator traction system comprises a traction wheel, a traction wheel motor, a steel wire rope with a scale mark and a control cabinet; the traction wheel motor is electrically connected with the traction wheel; the steel wire rope is placed in a rope groove of the traction wheel; the steel wire rope is matched with the rope groove of the traction wheel; the control cabinet is electrically connected with the traction wheel motor; the control cabinet is used for reading the revolution of the traction wheel motor; the image acquiring device is arranged above the traction wheel; the image acquiring device is used for acquiring a scale mark image of the steel wire rope; the wireless transmission device is connected with the image acquiring device and the control cabinet; and the wireless transmission device is used for transmitting the scale mark image acquired by the image acquiring device and the revolution of the traction wheel motor to the monitoring center. The device and method solve the problem that elevator maintaining personnel have danger in the measuring process.

The invention provides a control method and device of a DC fan, an air conditioner and a controller of the air conditioner. The control method of the DC fan comprises the steps of receiving a self-defined instruction of a user to the rotating speed of the fan; determining the rotating speed percentage set by the user for each fan tap position of the DC fan according to the self-defined instruction; and storing the multiple fan tap positions of the DC fan and the rotating speed percentages corresponding to the fan tap positions. Through the technical scheme, it can be guaranteed that the user can regulate the rotating speed of the DC fan flexibly, and the operating difficulty of regulating the rotating speed of the DC fan every time by the user can be reduced.

The invention provides a TACAN beacon simulator ranging response probability implementation method. According to the method, m sequences distributed periodically and randomly are adopted, for the m sequences of N bits, (2<N>-1) pseudo-random numbers are provided in each cycle and have the disperse random distribution feature, the values of the (2<N>-1) pseudo-random numbers are compared with the response probability control threshold, and accordingly ranging response pulse output is controlled. The method can be achieved through software, the circuit is simple, adjustment is flexible, the response probability control accuracy is high, and non-response pulses have the random distribution feature under a certain response probability.

The invention provides a mobile phone, and a video calling method and a video calling device thereof. The method comprises the following steps of: when a user makes a video call by the mobile phone, acquiring the status of a touch switch on the mobile phone; judging whether the status of the touch switch is changed or not to obtain a judgment result; and controlling the switching of the mobile phone between a first video calling mode and a second video calling mode according to the judgment result. In the mobile phone, and the video calling method and the video calling device thereof, the video calling modes can be flexibly regulated according to an answering way of the user in a video calling process. For example, if the answering way of the user is 'approaching to an ear', an alternative image pre-stored in the mobile phone is transmitted as a video image, so great convenience is brought to the user.

The invention discloses an adjustable grain lifting transportation cart. The adjustable grain lifting transportation cart comprises a base, wheels are arranged below the base, a slant supporting rod and an auxiliary rod are fixedly connected to the upper portion of the base, the upper end of the auxiliary rod is connected to the middle of the slant supporting rod through a first hinge pin, and the upper end of the slant supporting rod is connected with the left end of a suspension arm through a second hinge pin; a fixing base is arranged at the lower portion of the slant supporting rod and connected with a jack through a third hinge pin, a top rod at the upper portion of the jack is connected with a movable base through a fourth hinge pin, a stretchable stretching rod is connected to the right end of the suspension arm, and an electric hoist is connected to the right end of the stretching rod. The adjustable grain lifting transportation cart solves the problem that countryside rice is difficult to transport, and has the advantages of being wide in application range, convenient to operate and flexible in adjustment.

The invention relates to a vehicle rim cleaning device which comprises a first motor, wherein a gear sleeves the shaft of the first motor, a rack is matched on the lower side of the gear, a swaying frame is connected to the left end of the rack in a hinged mode, a fixed rod is hinged in the middle of the swaying frame , a second motor is fixed on the right side of the swaying frame, a driving bevel gear sleeves the upper end of the second motor, a sleeve is arranged on the upper part of the swaying frame, a cleaning rod is fixed inside the sleeve, the right end of the cleaning rod is fixedly provided with a driven bevel gear matched with the driving bevel gear, a cleaning head sleeves the right end of the cleaning rod, and a bearing is arranged between the cleaning rod and the sleeve. The vehicle rim cleaning device can completely clean the back side surface, where a hydraulic gun cannot clean, of a rim, dust, oil or other foreign matters are prevented from accumulating on the back side surface of the rim, the dynamic balance when wheels drive at a high speed can be prevented from being influenced, the rusting of the back side surface of the rim can be prevented, the second motor driving the cleaning head to rotate is fixed on the swaying frame, and the cleaning head can rotate when swaying with the swaying frame.

The invention provides an illumination control method and system. An illumination time threshold and an illumination accumulation threshold can be flexibly set according to the growth characteristicsof plants; the state of an LED fill light is further judged according to currently obtained illumination time and illumination accumulation; and when the LED fill light is turned on, the state of theLED fill light is continuously adjusted according to the obtained sun illumination intensity and spacing distances between the LED fill light and the corresponding plants. According to the illumination control method and system, the state of the LED fill light is flexibly adjusted according to the growth rules of the plants, so that operation is efficient and the plants can reach a relatively goodgrowth state.

The invention relates to a dual-rocker four-shaft welding position changing machine and a using method thereof. The lower ends of two upper rockers are hinged to a rack, the upper portions of the upper rockers are hinged to an upper hydraulic cylinder, and the upper rockers can be driven by the upper hydraulic cylinder to rotate around upper rocker main shafts; the lower ends of two lower rockers are hinged to the rack, the upper portions of the lower rockers are hinged to a lower hydraulic cylinder, and the lower rockers can be driven by the hydraulic cylinder to rotate around lower rocker main shafts; the upper ends of the two upper rockers are hinged to the bottom of a rotating machine head, and the upper ends of the two lower rockers are hinged to the bottom of the rotating machine head; and a rotational chuck is arranged at the top of the rotating machine head. According to the dual-rocker four-shaft welding position changing machine and the using method, the working principle of a four-connecting-rod mechanism is adopted, an upper rocker mechanism and a lower rocker mechanism are controlled by the corresponding hydraulic cylinders to rotate, the rotating machine head is driven to achieve position changing with any height and angle, rotation of workpieces at any position can be further achieved through the rotating machine head, adjustment is flexible, and welding of the workpieces can be greatly facilitated; and through linkage of a control system and a welding robot, automatic position changing in the workpiece welding process can be achieved.