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39results about How to "Easy to implement design" patented technology

Modular expandable antenna mechanism based on a symmetrical structure tetrahedral combination unit

The invention discloses a modular expandable antenna mechanism based on a symmetrical structure tetrahedral combination unit. The modular expandable antenna mechanism is formed by a plurality of expandable antenna modules, each two adjacent expandable antenna modules are connected through a first face plate at the bottom portion of one of the expandable antenna modules and a second face plate at the bottom portion of the other one of the expandable antenna modules, the first face plate and the second face plate are connected through a hooke hinge, a first face plate and a second face plate which are not connected at the bottom portions of each two adjacent expandable antenna modules are connected through a first synchronization rod, the middle portions of the rod bodies of the first synchronization rods can be folded, and the first synchronization rods, the first face plates and the second face plates are rotationally connected. The expandable antenna modules of the modular expandableantenna mechanism are connected through the hooke hinges to achieve relative posture adjustment between the modules, the structure is simple, the processing and manufacturing cost and the installationdifficulty are low, and a large-scale expandable antenna mechanism with any caliber and a high folding rate can be formed.
Owner:YANSHAN UNIV

EOS-ELM-based piezoelectric driving positioning platform modeling method and system, and EOS-ELM-based piezoelectric driving positioning platform control method

InactiveCN107390546AAvoid cumbersome model inversion processPrevent inversionSimulator controlLearning machineModel inversion
The application discloses an EOS-ELM-based piezoelectric driving positioning platform modeling method and system, and an EOS-ELM-based piezoelectric driving positioning platform control method. According to the application, by taking the current desired output displacement, a plurality of previous output displacements and an input driving voltage as the input values of a model, and taking the input driving voltage value of a piezoelectric driver at the current moment as an output value of the model, a hysteretic nonlinear multi-value mapping problem is solved, and a complicated model inversion process can be avoided; secondly, the weights and the threshold values between a hidden layer and an input layer are given randomly, and a conventional neural network can be transformed into a linear equation model, so that the training time of the model is shortened greatly; thirdly, an infinite differentiable function is used as a hidden layer activation function, so that an excellent training effect can be realized; additionally, just by adopting a recursive least square method, the parameter online adaptive updating can be realized, and the applicability of the model is improved; furthermore, by integrating a plurality of weak learning machines, the precision and the stability of the model can be improved.
Owner:GUANGDONG UNIV OF TECH

Photochromic glasses with liquid crystal thin film protection lenses and manufacturing method of protection lenses

The invention provides a pair of photochromic glasses with liquid crystal thin film protection lenses. The pair of photochromic glasses comprises a glasses frame, flexible liquid crystal thin films, a control module and the liquid crystal thin film protection lenses. The invention further provides a manufacturing method of the liquid crystal thin film protection lenses of the photochromic glasses and the manufacturing method comprises six steps. According to the photochromic glasses with the liquid crystal thin film protection lenses, provided by the invention, the lenses can be bent, and are light in weight and less prone to damage; the surface rigidity of the lenses is high so that the lenses are unlikely to be damaged by scratching; the brightness can be automatically adjusted along with the change of external light intensity; the photochromic glasses can help people to improve visual comfort so that eye diseases are prevented; the maintenance cost is low and solar energy supplies power, so that the pair of photochromic glasses saves energy and is environmentally friendly; the protection lenses are arranged, so that the design and large-batch production are easy to realize; and meanwhile, the manufacturing method of the protection lenses is simple, convenient and feasible in operation.
Owner:鲁彦涛 +1

Method for evaluating resistance spot welding spattering quantitatively in real time through acoustic emission signal frequency spectrum

The invention discloses a method for evaluating resistance spot welding spattering quantitatively in real time through acoustic emission signal frequency spectrum. The method comprises the following steps that structure load acoustic emission signals in the resistance spot welding process are collected in real time, and a dynamic oscillogram of the signals is drawn; acoustic emission signals of welding spattering are extracted according to the dynamic oscillogram of the structure load acoustic emission signals in the resistance spot welding process; the frequency spectrum of the acoustic emission signals in the welding spattering process is calculated, and a spectrogram is drawn; frequency spectrum lines with the frequency ranging from 1800 HZ to 2600 HZ are extracted through a band-pass filter; the arithmetic mean value of three maximum peak values of the frequency spectrum lines with the frequency ranging from 1800 HZ to 2600 HZ is calculated; according to the judgment rules of quantitative evaluation of the amount of welding spattering, the larger the arithmetic mean value of the three maximum peak values of the frequency spectrum lines with the frequency ranging from 1800 HZ to 2600 HZ is, the larger the amount of the spattering in the resistance spot welding process is. Analytical calculation of the frequency spectrum can be carried out through both power spectrum and amplitude spectrum. Through the method for evaluating resistance spot welding spattering quantitatively in real time through the acoustic emission signal frequency spectrum, the quantitative evaluation of the amount of spattering in the resistance spot welding spattering process can be achieved.
Owner:CHONGQING UNIV OF TECH

FReOS-ELM-based piezoelectric actuation type FTS modeling method and system and control method and system

InactiveCN107505840AModeling is convenientSolving Hysteretic Nonlinear Multivalued Mapping ProblemsDesign optimisation/simulationSpecial data processing applicationsMulti valuedCurrent time
The application discloses an FReOS-ELM-based piezoelectric actuation type FTS modeling method and system and control method and system. According to the application, a current expected output displacement value, a plurality of previous output displacement values, and input driving voltages are used as input values of a model and an input driving voltage value of a piezoelectric ceramic actuator component at a current time is used as an output value of the model, so that a hysteresis nonlinear multi-value mapping problem is solved and a tedious model inversion process is avoided. Besides, the model is converted into a linear equation model, so that the training time of the model is shortened greatly. And the precision is improved by using an infinitely differentiable function as a hidden-layer activation function. Moreover, on the basis of the regularization idea, a proportional parameter of a risk is introduced to avoid ill-conditioned matrix generation, so that the training stability and generalization performance of the model are improved substantially; and because of introduction of a forgetting factor for online adaptive parameter updating, the operation becomes convenient, the computing loading and information overloading phenomena are avoided and the adaptability of the model is enhanced.
Owner:GUANGDONG UNIV OF TECH

Laser welding equipment based on gradient energy band splicing

The invention discloses laser welding equipment based on gradient energy band splicing. The laser welding equipment comprises a laser light source, a first rectangular reflecting plate and a second rectangular reflecting plate. The first rectangular reflecting plate and the second rectangular reflecting plate are oppositely placed; the film plating is performed for the surfaces of the first reflecting plate and the second reflecting plate, so that one part of an incident beam is reflected and the other part is transmitted when the incident beam is emitted to the second rectangular reflecting plate with an incident angle delta; the transmitted part is formed to a first light spot on the welding surface; the reflected part is transmitted to the first rectangular reflecting plate for full reflecting, and is partially transmitted by the second rectangular reflecting plate to form a second light spot on the welding surface; laser is continuously reflected in a light conducting channel consisting of the first rectangular reflecting plate and the second rectangular reflecting plate; and one part of the laser is output when being transmitted to the second rectangular reflecting plate each time so as to form a series of laser light spots with different energies on the welding surface. An electronic element passes through the laser light spots with different energies to realize a needed temperature rise curve so as to finish the welding of the electronic element.
Owner:HUAZHONG UNIV OF SCI & TECH

A Modular Deployable Antenna Mechanism Based on Symmetric Tetrahedron Combination Units

ActiveCN109860972BEasy to connectEasy to realize the design of high rigidity structureCollapsable antennas meansAntenna supports/mountingsSymmetric structureTetrahedron
The invention discloses a modular extendable antenna mechanism based on a tetrahedron combination unit with a symmetrical structure. The extendable antenna mechanism is composed of a plurality of extendable antenna modules, and two adjacent extendable antenna modules pass through one of the extendable antenna modules. The first faceplate at the bottom is connected to the second faceplate at the bottom of another extendable antenna module, and the first faceplate and the second faceplate are connected through a Hooke hinge, and the unconnected first faceplate at the bottom of two adjacent extendable antenna modules The faceplate and the second faceplate are connected by the first synchronization rod, the middle part of the rod body of the first synchronization rod can be folded, and the first synchronization rod is rotatably connected with the first faceplate and the second faceplate; the module of the extendable antenna mechanism provided by the present invention The modules are connected by a Hooke hinge, which can realize the relative posture adjustment between the modules, and has the advantages of simple structure, low manufacturing cost and low installation difficulty, and can form a large-scale extendable antenna mechanism with a high folding rate of any caliber.
Owner:YANSHAN UNIV

Multi-surface toothbrush

The invention discloses a toothbrush holder. The toothbrush holder comprises: a handle, wherein a fixing head is arranged at the top of the handle, and a plurality of second sliding rails are arrangedon the fixing head; and a toothbrush rod, wherein the toothbrush rod is provided with a first sliding rail, the front end of the toothbrush rod is provided with a rotating head, the rotating head isprovided with a third sliding rail, the first sliding rail and the third sliding rail are communicated with each other, and one side of the rotating head is rotatably connected with one side of the fixing head, so that the second sliding rails and the third sliding rail are communicated with each other. The toothbrush holder is simple in structure, and multi-toothbrush-head design of the toothbrush is facilitated. In addition, the invention further provides a multi-face toothbrush, the multi-face toothbrush is provided with a plurality of toothbrush heads, and can achieve the effect that one toothbrush holder is provided with the multiple toothbrush heads. The toothbrush heads are slidably mounted on the second sliding rails in a one-to-one correspondence mode, the toothbrush heads slide to the tail end of the toothbrush rod through one second sliding rail, the third sliding rail and the first sliding rail, and the toothbrush heads can be switched to the other second sliding rail by rotating the rotating head, so that the other toothbrush head slides to the tail end of the toothbrush rod, and the purpose of quickly replacing the toothbrush head is achieved.
Owner:许键

Demoulding device with spring-piece type tapered pin anti-breaking mechanism

InactiveCN101913233BPrevent over pull fractureWork reliablyInterference fitFlange
The invention relates to a demoulding device with a spring-piece type tapered pin anti-breaking mechanism, which comprises a moving die, wherein a core of the moving die is provided with a tapered pin through hole. The demoulding device is characterized in that a tapered pin in a square block form is arranged in the tapered pin through hole, the lower end of the tapered pin is provided with a transverse sliding chute which is connected with the upper end of a longitudinal push rod, a flange at the lower end of the push rod is arranged on a push plate fixing board with a step hole, an annular spring piece with an arc section is placed between the flange at the lower end of the push rod and the pushing plate fixing board, the pushing plate fixing board is fixed with the pushing plate through a bolt, and the tapered pin in the square block form obliquely slides in the tapered pin through hole under the actions of the pushing plate and the push rod, and can carry out transverse core-loosing demoulding while a finished product is ejected out. The invention can counteract over-drawing displacement generated by interference fit formed by the heating expansion of a tapered pin positioningsurface when the tapered pin returns by press elastic deformation of the annular spring piece with the arc section, avoids breaking the tapered pin, ensures that the tapered pin works stably, and prolongs the service life of the tapered pin.
Owner:TPV DISPLAY TECH (XIAMEN) CO LTD

Backlight module and display device

The invention discloses a backlight module and a display device. The backlight module comprises a back plate, a lamp panel, a diffusion plate and a plurality of groups of silk thread assemblies, wherein the back plate comprises a bottom plate and a plurality of side plates which are arranged on the peripheral side of the bottom plate in a surrounding mode and are perpendicular to the bottom plate, and the side plates and the bottom plate are matched to form a containing space with an opening in the side away from the bottom plate; the plurality of groups of silk thread assemblies are located between the diffusion plate and the lamp panel, each group of silk thread assemblies comprises a plurality of silk threads, each silk thread penetrates through the opening of the accommodating space of the back plate and is tensioned on the side plate of the back plate, the plurality of groups of silk thread assemblies are mutually matched to form a support body for supporting the diffusion plate assembly, the plurality of groups of silk thread assemblies support diffusion, the effective visual angle of a product can be improved, the frameless/narrow-frame design can be conveniently achieved, the overall mass of the display device is reduced, meanwhile, a larger and more dispersed supporting face is achieved, and the failure risk of the diffusion plate during mechanical vibration is effectively reduced.
Owner:FUZHOU BOE OPTOELECTRONICS TECH CO LTD +1
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