305results about How to "Achieve self-regulation" patented technology

The invention provides a smart city big data management system, and relates to the technical field of smart cities, and the system comprises: a big data center station which is used for collecting city big data provided by city infrastructures, carrying out the preprocessing of the city big data to obtain preprocessed big data, and storing the preprocessed big data to form a city brain database; acollaborative sharing platform which is used for carrying out capacity encapsulation and protocol adaptation on the capacity components, abstracting the capacity components into atomic energy, and providing services to the outside through an open communication interface so as to support business applications of different technical systems to call and interact with the preprocessed big data; and an auxiliary decision application which is used for carrying out artificial intelligence analysis according to a pre-generated adaptive decision analysis engine set and the preprocessed big data, and displaying an analysis result to an urban manager through an urban instrument panel so as to monitor an urban operation state in real time and provide technical support for decision making of the urbanmanager. According to the invention, the city can self-discover problems to the greatest extent and assist in solving the problems.

The embodiment of the invention provides an issuing method for multimedia courseware based on a stream media platform. The method comprises the following steps: a network architecture based on the stream media platform takes central nodes as core nodes of an application layer multicast network, uses each secondary node as an edge pushing node, and divides each secondary node into different regions to deploy a peer to peer (P2P) service in the divided regions; and during the process of issuing the multimedia courseware, live programs are pushed to the secondary nodes through direct connection of the core nodes and the secondary nodes, and request programs are directly pushed to storage brought by each secondary node through the core nodes. The network architecture can solve the bottleneck problem of a network bandwidth, use bandwidth resources at a maximal limit, improve interconnection and intercommunication effects of the regional-crossing network and service quality of stream media so as to smoothly develop a network education platform.

The invention discloses a method for hoisting an entire oversized steel reinforcement cage in one step. The method mainly comprises the steps of: binding a steel reinforcement cage; arranging hoisting points and configuring a crane; connecting a main hoisting hook with the hoisting points; completing horizontal hoisting of the steel reinforcement cage; converting the steel reinforcement cage froma horizontal state to a vertical state; and directly hoisting the steel reinforcement cage in the vertical standing state to be in place by using a third crane. According to the invention, by jointlyhoisting the oversized steel reinforcement cage by using three hoisting equipment and by skillfully transforming the hoisting points in the angle transformation from the horizontal state to the vertical state, the oversized steel reinforcement cage is hoisted in one step without segmentation and structural variation, so that the efficiency in hoisting operation is increased, in addition, concretecan be poured, so that the advantages of construction safety, operability, capability of meeting construction period requirement and increased efficiency are achieved.

This invention relates to a voltage adjuster of an AC generator including a virtual value and its mean value evaluation circuit of three-phase voltage, a voltage primary circuit, a voltage ring comparing adjuster, a current ring comparing adjuster, a PWM generation and drive circuit, an excitation current limit and protection circuit, a load current limit circuit, in which, said voltage adjuster can realize the feedback control of the virtual value of the output voltage with the functions of feed back control of excitation current, load current limit, limit of excitation current and overcurrent protection.

The invention provides a rotary lubricating oil equal-thickness smearing and leveling device for the inner wall of a rust-proof pipeline and relates to the technical field of pipe rust preventing. Thedevice solves the problems that at present, when oil is smeared on the inner wall of a pipe, the process is usually carried out through two methods, the manual smearing efficiency is low, the smearing thicknesses are not uniform, waste of the oil is caused easily, when a large machine carries out oil smearing, use is not flexible, the machine is not portable, and the machine cannot adapt to small-scale use. The rotary lubricating oil equal-thickness smearing and leveling device for the inner wall of the rust-proof pipeline comprises a pipe body, a supporting rod main body and a locking nut. Afixing structure is fixedly connected to the pipe body. A thread pipe is connected to the fixing structure in a threaded manner. The outer side of the supporting rod main body is of an arc structure,a friction plate is arranged on the outer side of the supporting rod main body in an adhering manner, the friction plate is of a gauze-like soft structure, and therefore when the supporting structurerotates, the inner wall of the pipeline can be polished.

A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.

The invention relates to an intelligent compensation method and a control system for a linear voice coil motor. The method is based on a mixed inverse hysteresis model of the voice coil motor, the mixed inverse hysteresis model of the voice coil motor is formed by connecting an inverse hysteresis model of the voice coil motor and a neural network model in series, the input is set displacement r(t), and the output is voltage uu1(t). A friction model and a second neural network model are connected in series to form a mixed friction model of the voice coil motor, the input is displacement y(t), and the output is voltage uu2(t). The mixed inverse hysteresis model is connected with the voice coil motor in series by a feedforward mode, the mixed friction model is connected with the voice coil motor by a feedback mode, the neural networks of the two models regulate the parameters at real time, and feedback control can be carried out according to a weakly nonlinear object after intelligent compensation is carried out on the non-smooth hysteresis characteristic and the non-smooth friction characteristic of the voice coil motor. In the system, a displacement sensor is connected with a signal processor, a program memory stores a mixed inverse hysteresis model compensation program, a mixed friction model compensation program and a weakly nonlinear object control algorithm program, and a CPU regulates driving voltage to control the forward and reverse movement of the voice coil motor.

The invention provides an electrophoretic paint uniform-speed stirring device based on resistance adjustment, and relates to the technical field of electrophoretic paint stirring. The electrophoreticpaint uniform-speed stirring device based on resistance adjustment includes a housing; a base is fixedly mounted at the bottom end of the shell; a rotating shaft is rotatably connected to the interiorof the shell; a lantern ring is slidably connected to the periphery of the rotating shaft, a transmission rod is in transmission connection between the lantern ring and the periphery of the top of the rotating shaft, a connecting plate is rotatably connected to the periphery of the transmission rod, stirring blades are fixedly mounted at the end, away from the transmission rod, of the connectingplate, and a sleeve is fixedly mounted at the top end of the shell. According to the electrophoretic paint uniform-speed stirring device based on resistance adjustment, the stirring range can be guaranteed, meanwhile, after stirring is completed, flowing-out of an electrophoretic paint can be facilitated, then the working efficiency is improved, self-adjustment of the rotating speed of the motor is achieved, the motor can better drive the rotating shaft to rotate at a uniform speed, and the stirring effect is improved.

An adjustable position fixing installation device of a soil pressure gauge is arranged on the periphery of the soil pressure gauge and characterized in that a hoop made of a rigid plate is arranged on the adjustable position fixing installation device, the thickness of the loop is equal to or smaller than that of the soil pressure gauge, the shape of the hoop corresponds to the shape of the periphery of the soil pressure gauge, and the size of the inside of the hoop is equal to or slightly greater than the dimension of the periphery of the soil pressure gauge. Two fixing reinforcing steel bars are fixed on the back surface of the hoop, hooks are arranged on ends of the two fixing reinforcing steel bars, and other ends of the fixing reinforcing steel bars incline to the direction of the back surface. By means of the adjustable position fixing installation device of the soil pressure gauge, interface type installation of the soil pressure gauge can be achieved conveniently and accurately, and the problem that the soil pressure gauge is easily covered with concrete when buried is solved, installation time is saved further, the 'survival rate' of the soil pressure gauge is increased, and installation cost is reduced. Furthermore, the adjustable position fixing installation device of the soil pressure gauge is an ideal device capable of overcoming the shortcoming in the prior art and has obvious economic benefit and social benefit.

The invention discloses curve cutting equipment which comprises a machine frame (100), two units, a knife rest (300) and a cutting knife group (400). The first unit is installed on the machine frame (100) and comprises a first power part and a conveying mechanism; and the first power part is in transmission connection with the conveying mechanism to move the conveying mechanism and drive a cut object to move along an X axis. The second unit is installed on the machine frame (100) and comprises a second power part and a knife holder (200); and the second power part is in transmission connection with the knife holder (200) to drive the knife holder (200) to move along a Y axis. The knife rest (300) is freely pivoted on the knife holder (200), and a pivot axis is arranged in parallel to a Z axis. The cutting knife group (400) is arranged on the knife rest (300), and a cutting part of the cutting knife group (400) is arranged with the pivot axis of the knife rest (300) in a staggered manner. The curve cutting equipment has the following advantages of smooth cutting edge, simplicity in cutting, low energy consumption and low cost.

The invention relates to a hinge type throat adjusting system and belongs to the technical field of internal combustion engines. The hinge type throat adjusting system comprises an engine air inlet pipe, an engine, an engine exhaust pipe, a vane plate, a rotary shaft, a push-pull rod, a moving body, a spring, a slide body and a connecting pipe, wherein the vane plate is arranged in an air inlet branch and fixedly connected with the rotary shaft, the right wall face of the slide body is connected with right wall face of a control body through a second spring, one end of the connecting pipe is communicated with the inner cavity of the control body, the other end of the connecting pipe is connected with the engine exhaust pipe between a catalyst package and a silencer. The hinge type throat adjusting system has the advantages that air inlet tumble is large when the engine operates under a low-speed working condition, and pump air loss is small when the engine operates under a high-speed working condition; the hinge type throat adjusting system is reasonable in design, simple in structure and applicable to optimization design of the air inlet system of natural air suction internal combustion engines.

The invention relates to the technical field of cable conveying, and provides a uniform tension conveying device for computer communication cables. The uniform tension conveying device comprises a cable roller erected on a roller frame; a tension adjusting mechanism is further arranged on the roller frame; the tension adjusting mechanism comprises a driving cable clamping wheel set and a driven cable clamping wheel set which are arranged on the roller frame, and a cable penetrating cylinder connected to the cables in a penetrating mode is arranged between the driving cable clamping wheel set and the driven cable clamping wheel set; the lower portion of the cable penetrating cylinder is connected with a sliding rod, and the sliding rod is slidably connected with a guide cylinder arranged on a moving vehicle in a sleeving mode; an upper ejector rod is arranged on the upper half portion of the cable penetrating cylinder in a penetrating mode, and lower ejector rods are symmetrically arranged on the lower half portion of the cable penetrating cylinder; and the lower ejector rods are provided with cable jacking wheels for pressing and connecting the cables. Therefore, the cable penetrating cylinder is arranged on the driving cable clamping wheel set and the driven cable clamping wheel set, and meanwhile, the cable penetrating cylinder is connected with the moving vehicle; and the cable penetrating cylinder sensitively senses change of the pulling force, so that self-adjustment of the tension force of the cables is realized, and safe and stable conveying of the cables is guaranteed.

The present invention relates to the field of insect farming, and more particularly to black soldier fly farming equipment with an automatic sorting function and a method of use thereof. The black soldier fly farming equipment comprises two parts, namely a larva chamber and an adult chamber, wherein the larva chamber is connected to the adult chamber through a light-proof channel; a plurality of farming cabinets are arranged in the larva chamber, and isolators are arranged in each farming cabinet; the adult chamber and the larva chamber are provided with egg collectors for collecting eggs, andthe egg collectors are capable of shifting between the adult chamber and the larva chamber by means of a shifter arranged in the adult chamber and the larva chamber. The black soldier fly farming equipment is integrated with the functions of egg collection, black soldier fly farming, larva sorting, and residue collection, and is simple for operation and suitable for large-scale farming of the black soldier flies.

The invention belongs to the technical field of polymer synthesis, and particularly relates to a preparation method of a polyacrylate-polyester I-polyester II triblock copolymer. A carboxyl or hydroxyl-terminated trithioester compound is selected as a multifunctional chain transfer reagent, and is combined with chemical selective polymerization and copolymerization strategies to realize quaternarycopolymerization of an epoxy monomer, an anhydride monomer, a lactone monomer and an acrylate monomer, and the polyacrylate-polyester I-polyester II triblock copolymer is prepared through a one-stepmethod. The block copolymer prepared in the invention has rich structural types, contains one polyacrylate block and two polyester blocks, can significantly improve the performances of the biodegradable polyester block copolymer, and can easily adjust and integrate the excellent properties of the three blocks to obtain the block copolymer with good comprehensive properties; and the relative molecular mass and the block length of the prepared block copolymer are controllable.

The invention discloses an underwater robot diving depth self-adjusting device, and relates to the technical field of buoyancy adjusting devices. The underwater robot diving depth self-adjusting device comprises a fixing plate; a sealing ring is fixed to the lower surface of the fixing plate; an adjusting cylinder is fixed to one side of the sealing ring; an adjusting hole is formed in the lower surface of the adjusting cylinder; a movable hole is formed in the upper surface of the fixing plate; a first rotating shaft is fixed in the movable hole; a threaded rod is fixed to the inner wall of the first rotating shaft; a clamping groove is fixed to one end of the threaded rod; a plurality of first clamping blocks are fixed to the surface of the clamping groove; a second rotating shaft is fixed to the other end of the threaded rod; an adjusting plate is fixed to an outer ring of the second rotating shaft; and a spring is fixed to one side of the adjusting plate. Through the action of thethreaded rod, the volume of liquid in the adjusting cylinder can be flexibly adjusted, and the underwater robot diving depth self-adjusting device floats or sinks under the action of buoyancy, so thatthe purpose of adjustment is achieved, the self-adjustment of the diving depth of the underwater robot is realized and the operation requirements of the underwater robot at different depths are better met.

The invention belongs to the technical field of high-pressure pipeline machining equipment, and particularly relates to a high-pressure pipeline wrapping machine. The high-pressure pipeline wrapping machine comprises a wrapping mechanism, a line hunting mechanism and a three-dimensional self-adaptive tracking platform. The line hunting mechanism is connected with the wrapping mechanism, and the wrapping mechanism is arranged on the three-dimensional self-adaptive tracking platform, and comprises a working table; and a gear motor, a rotating mechanism, a storing mechanism, a supporting mechanism, a limiting mechanism and a winding device are arranged on the working table, the line hunting mechanism comprises a camera mounted on the working table, the three-dimensional self-adaptive trackingplatform comprises a trolley platform, a lifting platform is arranged on the trolley platform, a rotating platform is arranged on the lifting platform, and the working table is mounted on the rotating platform. The high-pressure pipeline wrapping machine can achieve lifting up and down by 1.5m in the vertical direction, obliquely climbing by 45 degrees and turning by 90 degrees in the horizontaldirection, and can adapt to pipeline buses of different thicknesses, self adjustment can be achieved along with thickening or thinning of pipelines in the winding process, a great deal of manpower issaved, and the winding efficiency is improved.

The invention provides a solar water heater water tank with an automatic balance heat insulation valve. The automatic balance heat insulation valve is arranged in a ventilation port of the water tank, the valve body is flaky or consists of a fixed piece and a moving piece between which a movement gap is formed; or the valve body consists of the moving piece and a connector for the moving piece and the inner wall of the ventilation port, and the movement gap is formed between the moving piece and the inner wall of the ventilation port. The heat insulation valve of the invention has an excellent function of automatic balance and the degree of opening/closing of the moving piece of the heat insulation valve is controlled by pressure difference; and self-regulation on flow section area of theventilation port can be realized. The operation of the water tank for water feeding and discharging is smooth, and when no pressure difference presents in the water tank, the heat insulation valve isunder an original static state and the pressure inside and outside the water tank is balanced only by micro gap, thus the formation of convection mass can be effectively prevented, the convectional heat exchange loss at the ventilation port is reduced significantly, and the heat insulation effect of the water tank is improved; the valve is simple in structure and low in manufacturing difficulty, and has low material consumption and strong practicability.

The invention relates to a motorbike muffler, in particular to a noise piezoelectric power generation self-powered magneto-rheological muffler used for motorbikes. The noise piezoelectric power generation self-powered magneto-rheological muffler comprises a hollow barrel. An air inlet pipe and an air outlet pipe are arranged at the two ends of the axis of the barrel correspondingly. The barrel comprises a shell and a fixing body. A plurality of cylindrical holes are formed in the fixing body, and magnetic cones are arranged in the cylindrical holes. The magnetic cones are composed of cylindrical permanent magnets and first conical magnetorheological fluid which is covered onto the permanent magnets after magnetization. The barrel is internally divided into a first cavity, a second cavity and a third cavity through a left partition plate and a right partition plate in the direction perpendicular to the axis of the barrel. A damping unit is arranged in the second cavity. A crankshaft inthe first cavity is sleeved with fan blades, and each fan blade is formed by bonding a circular ring-shaped piezoelectric crystal plate and a metal base plate. The piezoelectric power generation self-powered magneto-rheological muffler used for the motorbikes has the advantages and characteristics that continuous change of the acoustic impedance gradient of the magnetic cones and the fan blades are used for achieving dynamic active sound absorption, acoustic energy is converted into heat energy, and acoustic impedance can be self-adjusted.

The invention discloses a self-aligning grinding surface nanocrystallization device. According to the device, surface nanocrystallization of a metal material is induced by means of the principle that grain refinement is caused by plastic deformation. The device is mainly composed of a top variable-speed belt wheel set, a middle driving shaft system, a grinding head assembly, a working table capable of achieving horizontal feeding and longitudinal feeding, and an integrated framework, wherein connection of a main shaft variable-frequency and variable-speed motor and a grinding head system is achieved through the middle driving shaft system, and automatic alignment of a grinding head is achieved through a ball-cage type universal joint. Lead screws on the two sides of the device are in matched transmission with a nut in a middle cross beam where a main shaft motor is located to achieve vertical movement of the middle shaft system, so that the surface of a plate is pressed. Guide rails in the horizontal direction and longitudinal direction are arranged on the working table to achieve bidirectional feeding, and a workpiece clamp is installed on the upper portion of the working table. According to the device, machining efficiency and operation user friendliness are improved greatly, and nanocrystallization effect is good.

The invention discloses a detecting and treating method for a sub-health status of a human body of an intelligent foot biological health information management and health-care decision making system, which comprises the following steps: identifying plantar outlines of a user; converting actual positions of plantar reflex areas of the user according to distribution positions of plantar reflex areas on standard plantar outlines; detecting state parameters of the reflex areas and realizing detection for the sub-health status of the human body; searching a comparison table of 'a treating scheme for the sub-health status' prestored in a database of the health-care decision making system and generating a treating scheme; choosing treating heads at corresponding positions to implement stimulation treatment. According to the method disclosed by the invention, the plantar outlines and the positions of the plantar reflex areas of the user can be automatically identified; detection probes at corresponding positions are chosen to detect the state parameters of the reflex areas, so as to achieve the purpose of accurately detecting the sub-health status of the human body; finally, the treating scheme corresponding to the sub-health status of the human body is obtained according to the decision making system, and the treating heads at the corresponding positions are controlled to implement treatment; the scope of application is wide, and different users with different sizes of feet can achieve a good foot massage effect.