675results about How to "Easy to modularize" patented technology

The invention relates to a power distribution network fault arc extinction method by connecting a neutral point to the ground through multi-level converter. The power distribution network fault arc extinction method is characterized in that the cascade H-bridge multi-level converter is adopted and directly connected at the position of the neutral point of a power distribution network through a reactor; at the initial moment when the power distribution network has a single-phase earth fault, synthetic operation is conducted to generate offset currents needed to be injected (img file='69356dest_path_image001. TIF'wi'19' he'=25' / ), then the offset currents are quickly put into the multi-level converter, the multi-level converter is controlled by aid of the current tracking control algorithm and the PWM (Pulse-Width Modulation) modulation strategy to generate offset currents (img file='652784dest_path_image001. TIF'wi'19' he'=25' / ), and the offset currents are put into the neutral point of the power distribution network so as to compensate grounding total currents of the fault point. In addition, the fault phase voltage is forced to be 0 constantly so the instantaneous grounding fault can be cleared automatically, and further the technical problem of the existing fault arc extinction technology of poor arc extinction effect can be solved.

The invention discloses a trajectory regeneration compensation method of numerical control machine error. The method comprises the steps that: at first, a temperature sensor is arranged on a numerical control machine to measure geometrical error and thermal error of the machine, and then a machine error model is established; second, an error compensation controller diverges a numerical control trajectory to be processed and reads data from the temperature sensor; afterwards, the error compensation controller substitutes a node coordinate subsequent to divergence and temperature data in the machine error model to obtain an error to which the coordinate is corresponding, the error is then superposed on the coordinate of the node, and the numerical trajectory is reconstructed according to the corrected coordinate; and finally, the error compensation controller transfers the reconstructed trajectory to numerical control system for being processed, so as to realize the compensation for numerical control machine error. Compared with other compensation methods, the method according to the invention has the advantages of great flexibility and convenience, strong adaptability and no need of changing numerical control system, etc.

A customizable and intuitive user interface for medical systems and devices, such as cardiopulmonary bypass systems, perfusion systems, extracorporeal circulation apparatuses, and heart-lung machines, is provided, which allows for ease of access to critical patient data to facilitate blood perfusion and to monitor and regulate various physiological parameters of a patient and an extracorporeal blood flow circuit during surgical procedures, such as cardiopulmonary bypass and extracorporeal membrane oxygenation (ECMO).

Disclosed are a grid-connected converter device of a direct-drive wind power system and a corresponding power coordination control method. The converter device is composed of basic converter units of a Boost circuit based on ac-side energy storage; the structure sufficiently utilizes the equivalent inductance of a power generator stator winding, avoids an external inductor in traditional dc voltage booster circuit, and reduces power loss and equipment cost. Two converter proposals, including a diode rectification mode and a PWM rectification mode are designed; converter topologies with two capacity grades, including medium and small power converter topology, megawatt grade high power converter topology, and relative extension structures are designed, such as a parallel connection converter and an H bridge cascade structure converter; wherein, the converter with the H bridge cascade structure is applicable to grids with high capacity and high voltage, and can obviously reduce the harmonic content in grid-connected current; meanwhile, the control method performing feedback through three closed loops is designed, so the input power and output power of the converter are balanced instantaneously, the dc bus voltage maintains stable, and the grid-connected current wave is sine.

A driving device for an electric lock latch, comprises a housing, a motor having a power output shaft connected to a drive shaft with an external thread on a part thereof, an unequal diameter coil spring having a cylindrical spiral in the middle thereof screwing with the drive shaft, and a first and second conical spiral on both end thereof not screwing with the drive shaft, and a lock latch secured to the second conical spiral. The drive shaft is driven and rotated by a motor to pass the rotation power to the cylindrical spiral, and a rotary motion of the drive shaft is converted into a linear motion of the unequal diameter coil spring for moving the lock latch to change the locked and unlocked state of the lock device. Accordingly, the lock structure and the installation thereof may be simplified and the power-saving effect is achieved.

The invention relates to an embedded omnidirectional ball vision object detection and mobile monitoring system and an embedded omnidirectional ball vision object detection and mobile monitoring method. Omnidirectional ball vision is a visual system with a global domain visual field and can acquire all scenes of the whole global domain at one time without the revolving and scanning of a camera. The system comprises an omnidirectional ball vision imaging system (comprising two fish-eye panoramic lens, two CMOS image acquisition chips, an FPGA controller and an SRAM memory chip), and a multi-path DSP parallel image processor (comprising a master control DSP and two paths of DSP parallel image processors). The imaging system acquires omnidirectional ball vision images by matching the two fish-eye panoramic lens and the two CMOS chips, wherein the master control DSP is responsible for data scheduling and communication, and the two paths of the parallel DSPs are independent from each other and can process the identification tracking of a static navigation mark and the real-time monitoring of a dynamic object in parallel. The method and the system have the advantages of high integrity, small volume and quick processing speed and are particularly suitable in the military or domestic field such as safety monitoring, mobile vehicle body navigation and the like.

The inventive vibration absorber comprises an execution unit, a control unit and a sensor. The execution unit consists of a magnetic inductor, a coil, a magnetic rheological elastic body, a vibration-absorbing mass block and a base. The above magnetic inductor consists of inner and outer sleeves, or a U-shaped iron-core and an armature or top and bottom plates and a column iron-core. Between inner and outer sleeves, the U-shaped iron-core and the armature or the top and bottom plates are filled the magnetic rheological elastic bodies. By regulating the voltage on the coil, the rigidity and the elasticity of the magnetic rheological elastic body are regulated to make its vibration frequency change, so as to make the vibration frequency of the vibration absorber execution unit is the same as that of the vibration-damping object.

The invention discloses a large-capacity battery converter and control method thereof. The converter of the invention comprises several branch single stage type DC / AC converter modules parallel to one another. Each battery cluster (Battery Cluster BC) converges energy to an AC bus via each branch single stage type DC / AC converter module to be transformed in voltage in order to connect to an AC grid or to operate independently with load. The invention solves the circular current and uniform current problems brought by serial and parallel connection of the battery cluster, and adopts the technology of module combination and alternate balance to effectively improve the system efficiency under low power and power quality at the AC and DC sides and to realize balanced use of the battery cluster. Each battery branch can conduct intelligent charge and discharge management and the control function and the protection function are configured independently to ensure the largest availability of the system. The invention has simple structure, small volume, small energy loss, easy modularization, high reliability, small output harmonic wave, good system expansibility and low requirement to insulating ability of the converter and can operate with reduced capacity when the unit is in failure. The control method of the large-capacity battery converter of the invention is convenient and simple in operation and easy in realization.

A driving device for an electric lock latch, comprising: a) a housing; b) a motor positioned within the housing with a power output shaft secured to a drive shaft with a threaded portion; c) a spiral spring having an internal part fixed in the housing or at the motor, the middle part of the spiral spring having a threaded joint portion (with a smaller diameter) corresponding to the threaded portion of the drive shaft, the internal and external parts of the spiral spring not having the threaded connection to the threaded portion of the drive shaft; and d) a lock latch secured to the external part of the spiral spring. Unlike the conventional structure requiring an external power source, thereby leading to a complicated installation, the structure in accordance with the invention includes a drive shaft having a threaded portion for driving a spiral spring in threaded connection thereto. Moreover, the lock latch is connected at the external part of the spiral spring. As a result, the circular motion of the drive shaft is converted into the rectilinear motion of the spiral spring such that the lock latch is moved. In this way, the locked and unlocked state of the lock device may be changed by the movement of the lock latch. Accordingly, the lock structure and the installation thereof may be simplified. Meanwhile, the power-saving effect is achieved.

The invention discloses an electric car modularization power system based on parallel connection of batteries and a control method. The electric car modularization power system comprises a battery system and a motor control system, wherein the battery system comprises a power supply battery pack and a battery management system, the motor control system comprises an inverter and an inverting control module, the battery management system is used for managing, sampling and controlling the power supply battery pack, the power supply battery pack is connected to the inverter through a conducting wire, the inverter is used for inverting direct currents into three-phase electric power with adjustable voltage and frequency, which is supplied to a traction motor, and the inverting control module is used for controlling the inverter and is in communication with the battery management system through a bus; power supply batteries are connected in parallel, the power supply battery pack is divided into n groups, the n groups of batteries are respectively used for supplying power to the traction motor by adopting inverter circuits, and the motor control system is combined with the battery management system, and thus the standardization and the modularization of the power system are facilitated, and the management and the replacement of the batteries are convenient.

The invention discloses an intelligent warehousing system which comprises a warehousing system and a transferring system. The warehousing system has modularization characteristics, a plurality of warehousing units which are stacked together can be spliced to be in different shapes at will so as to adapt to irregular warehousing spaces of workshops, each warehousing comprises a stacking support, parallel roller supports are arranged on the left and right sides of each stacking support, and a rotating roller is arranged between every two corresponding roller supports in a spaced manner and is provided with a warehousing driving mechanism; the transferring system comprises a transferring rail and a transferring walking trolley, the transferring walking trolley is provided with a transferringmechanism, the transferring mechanism comprises a stand column fixedly installed on the transferring walking trolley, the stand column is provided with a sliding barrel in sliding fit with the stand column, and a lifting mechanism is arranged on the stand column; the sliding barrel is fixedly provided with a transferring unit, the transferring unit comprises a transferring base which is provided with a cargo carrying plate, and a cargo carrying driving mechanism is arranged on the transferring base; and a conveyor belt mechanism is arranged on the cargo carrying plate. The invention further discloses a digital twinborn visualization sense control system.

The invention provides a closed-loop optical fiber current transformer, which comprises a light source, a light source control unit, a photoelectric detector, an optical device integrated assembly and a sensing head. An optical path system of the transformer is simple in structure and convenient in integration and modularization; a used optical element is small in volume and light in weight and free of electromagnetic interference, and has no interference on measured amount; and a reflection type optical path and a simple optical device are used for achieving mode interchange of orthogonal polarized light so as to form a reciprocity optical path and improve anti-interference capacity of the optical path. The multi-closed-loop technology is adopted, system measurement error caused by light source power attenuation and half-wave voltage drift of an optical is overcome, and stability and reliability of the transformer are improved.

The invention provides a modularized high-pressure power supply circuit which comprises a boosting circuit, a resonance boosting isolating circuit, a voltage doubling rectifying circuit and a control circuit, wherein the voltage boosting circuit is used for boosting input low-pressure wide-range direct voltage into output direct voltage with higher relative voltage; the resonance boosting isolating circuit is connected with the boosting circuit, and is used for converting the direct voltage output by the boosting circuit into resonance alternate current to be output through voltage transformation isolation; the voltage doubling rectifying circuit is connected with the resonance boosting circuit, and is used rectifying the alternate current output after resonance change of the resonance boosting isolating circuit into direct current to conduct voltage doubling boosting; the control circuit conducts voltage close-loop control on the boosting circuit and conducts fixed-frequency open-loop control on the resonance boosting isolating circuit. Various levels of short circuit structures of the circuit are relatively fixed, low-pressure wide-range input and high-pressure high isolation multichannel output are facilitated, the precision of the output voltage is high, the control is simple, the power density is high, the modularization is easy, and the modularized high-pressure power supply circuit is particularly suitable for being used as a power supply of an MPM after the modularization.

The invention relates to the field of video games and discloses a video game development system and a method of the video game development system. The number of compilations for a computer to compile video game executable program and the total calculation quantity of the computer are greatly reduced, the planning and artistic design principle can be more perfectly recovered, the game development period is shortened, and the development cost is reduced. The system comprises a file generating tool, a code automatic generator, a code developing tool, a compiler and a trigger editor, wherein the file generating tool is used for recording various events, conditions and behaviors needed to be used in the video games into a definition file; the code automatic generator is used for generating a framework code according to the definition file and an engine code base; the code developing tool is used for realizing various events, conditions and behaviors through concrete codes according to realization interfaces in the framework code, the compiler is used for compiling codes realized by the code developing tool into game programs; and the trigger editor is used for editing and storing a trigger combined by specified events, specified conditions and specified behaviors, and the trigger is used for the reading and the execution during the game program running.

The invention relates to an axial initiative-suspension three-dimensional bearing-free alternative-pole permanent-magnetic machine, which belongs to a bearing-free magnetic-suspension motor. The machine comprises two axial stator cores (1) that are provided with axial suspension controlling windings (8) that are serially connected with each other, a radial stator core (2) that is provided with a set of four-pair-pole torque controlling windings (7) and a set of one-pair-pole radial suspension controlling windings (6), a rotor core (4) that is provided with four homo-polar magnetizing permanent-magnets (3) and a rotor rotating shaft (5) that is enclosed with the rotor core (4). The motor has simple and compact structure, is free from additional axial magnetic bearing, integrates the motor rotation and axial and radial simultaneous-suspension functions of the rotor, has high integration, enlarges the suspension freedom of the bearing-free motor, simplifies the system structure, reduces the volume, the weight and the cost of the system, and has broad application prospect and important significance in different high-speed magnetic-suspension motor systems.

A secondary battery made by PCB (Printed Circuit Board) fabrication processes, the secondary battery including: a first via and a second via, wherein the first via is electrically connected to a positive pole of the secondary battery, and the second via is electrically connected to a negative pole of the secondary battery, the first via and second via of the secondary battery being electrically laminated over and connected to a first via and a second via of another second secondary battery, respectively, so as to constitute so as to form serial or parallel electrical connection between the secondary batteries.

The invention discloses a double-diffractive-grating heterodyning interference roll angle measuring device and method. The measuring device comprises a laser source, a double-diffractive-grating unit, an interference unit and a retroreflection unit, and the interference unit divides a laser beam into first polarized light and second polarized light; the first polarized light enters a first grating along a first optical path, enters the retroreflection unit along a second optical path through diffraction of the first grating, and is reflected through the retroreflection unit to reflect back the first polarized light to the interference unit along a third optical path and a fourth optical path parallel to the first optical path and the second optical path to serve as a first measuring light beam; the second polarized light enters a second grating along a fifth optical path parallel to the first optical path, enters the retroreflection unit along a sixth optical path through diffraction of the second grating, is reflected through the retroreflection unit, and is reflected back to the interference unit along a seventh optical path and an eighth optical path parallel to the fifth optical path and the sixth optical path to serve as a second measuring light beam, and therefore a roll angle is measured.

The invention discloses a bus-based battery pack equalizer circuit. The bus-based battery pack equalizer circuit comprises N batteries; each battery is connected with a corresponding equalizer circuit and the equalizer circuit is connected to a controller; each battery is connected with one equalizer circuit and each equalizer circuit is connected to one controller; the batteries correspond to the equalizer circuits one to one and the equalizer circuits correspond to the controllers one to one; the controllers are used for controlling the equalizer circuits according to the energy information of the battery pack, and thus realizing two-way flow of energy between the battery module and an energy transmission bus and realizing equalized energy storage of the batteries; the N controllers are connected in parallel to a data bus and the N batteries are connected in parallel to an energy transfer bus; N is greater than or equal to 2.

The invention provides a cooling device for a high-power optical fiber laser or an amplifier. The length of optical fibers arranged in the cooling device is variable, and the cooling device can cool a pump coupler arranged in the high-power optical fiber laser or the amplifier when cooling the optical fibers. The cooling device comprises a cooler pan and a heat conducting cover plate, wherein the cooler pan is a metal block provided with a flat surface; an input concave groove, a coupler concave groove, a helical line-shaped concave groove, a plurality of rewound concave grooves and a plurality of output concave grooves are engraved on the flat surface; the heat conducting cover plate is a metal block provided with a flat surface; and the flat surface of the heat conducting cover plate is not smaller than that of the cooler pan. When the integral cooling device for the high-power optical fiber laser or the amplifier is used, doped optical fibers can be returned to an adjacent former ring through the rewound concave groove when wound in the helical line-shaped groove, and the rewinding can be performed multiple times in the same rewound concave groove.

The invention discloses a hybrid encryption method, which belongs to the information security technology field. The hybrid encryption method utilizes an AES symmetric encryption algorithm to encrypt the message data and utilizes SM2 encryption algorithm to encrypt the session key. The invention also discloses a device for realizing the above hybrid encryption method by using hardware. The method combines the advantages of the AES algorithm and the SM2 algorithm, wherein the AES algorithm has advantages of fast arithmetic speed, low requirement for memory, reliable algorithm and can effectively resist the attack of differential cryptanalysis and linear cryptanalysis, and the SM2 algorithm can provide public key ciphers with most significant bit and obtain a ciphertext with a high security level by using a short secret key, according to the above advantages, the method can effectively resolve the contradiction between the big data encryption efficiency and the algorithm security.

The invention relates to an isolated Dc / Dc electric energy transducer, and aims to provide a combined current transformer capable of realizing the emergency regulation of output by the series connection of high frequency AC sides. The combined current transformer comprises two transformers, wherein primary windings of the two transformers are connected in series and then connected to the two ends of an AC input source Vin; the output of a secondary winding of the transformer T1 is connected to the input end of a rectifier circuit Rec1; the output of the secondary winding of the transformer T2 is connected to the input end of the rectifier circuit Rec2; one end of the output of the rectifier circuit Rec1 is connected to the positive end of an output capacitor Co, and the other end of the output of the rectifier circuit Rec1 is connected to the negative end of output Vo; one end of a load RL is connected to the positive end of the output capacitor Co, and the other end of the load RL is connected to the negative end of the output Vo; and the output of the rectifier circuit Rec2 adopts two alternative ways. The primary side of the combined current transformer can realize a fixed duty ratio, so the utilization rate of the transformers T1 and T2 are maximized; a feedback control signal is not required to be transmitted to the primary side, so the reliability of feedback control is improved; the modularization of a plurality of paths of independent output can be easy to realize; and the rectifier circuits of a secondary side more easily adopt a synchronous rectification technology.

The present invention provides a spring loading connector which comprises a socket and an adapter connected with the socket, wherein the socket comprises a housing and a central conductor positioned in the housing. The adapter is provided with a plug which is composed of the central conductor, an insulator and an adaptor housing that are assembled from the inner part to the outside. The inner surface of the housing of the socket comprises a first conical surface, a second conical surface and a cylindrical surface positioned between the two conical surfaces. The adapter comprises an elastic component, and the central conductor in the adapter is provided with a groove for receiving the central conductor of the socket. The insertion end of the housing of the adapter is a curved surface whichcontacts and matches with the second conical surface in the inner surface of the housing of the socket. The structure of the spring loading connector can allow large axial and radial deflection. Furthermore the spring loading connector has excellent electromagnetic shielding and can bear higher transmission power, and simultaneously has better radio frequency electrical performance.

The slider (5) has an adjusting device (20) adjusting a sliding element (6) with respect to another sliding element. The device has a screw extending along a longitudinal direction (X) in an internal space (9) formed between the elements, and is mounted on the latter sliding element. The device has a rigid retaining device (60) provided with an upper part (60b) that is projected with respect to a side opening (70) and a base part (60a) that is inserted in the internal space through the side opening. A nut (32) is engaged on the screw. An independent claim is also included for a sliding system for a motor vehicle seat.

The invention discloses a railway power supply system comprehensive electric energy quality treatment device and method thereof. A static var generator comprises a power unit and an electric reactor and is connected with a pre-charge loop; the power unit is connected in series with the electric reactor; and the pre-charge loop is connected with a power side of a power grid through an AC (alternating current) switch. A thyristor switch electric reactor comprises more than two electric reactor branches; each electric reactor branch comprises an electric reactor and an electronic switch; the electric reactor is connected in series with the electronic switch; and the electric reactor branch is connected in parallel on a load side of the power grid through the electronic switch. A control protection system controls the investment of the electric reactor branches to compensate for the reactive power and controls the static var generator to compensate for the reactive power. The device and method disclosed by the invention overcome the technical shortcomings that the cost is high by using a static var generator only and the thyristor switch electric reactor can not realize continuous compensation, and also consider the advantages of high regulation speed, wide operation range, reactive power compensation and harmonic wave treatment of the static var generator and large capacity and low cost of thyristor switch electric reactor.

The invention relates to a light-emitting diode (LED) dimming driving system with a silicon controlled bypass dimming circuit. The LED dimming driving system with the silicon controlled bypass dimming circuit comprises an alternating current / direct current (AC / DC) LED constant current actuator and a LED light string, wherein the input end of the AC / DC LED constant current actuator is electrically connected with an alternating current electric supply, the output end of the AC / DC LED constant current actuator is connected with the LED light string, the silicon controlled bypass dimming circuit is arranged, the input end of the silicon controlled bypass dimming circuit is connected with the alternating current (AC) electric supply, and the output end of the silicon controlled bypass dimming circuit is connected with a dimming interface of the AC / DC LED constant current actuator. The AC / DC LED constant current actuator obtains energy from the AC electric supply, and outputs a constant current value to drive the LED light string. The AC / DC LED constant current actuator is provided with an analog dimming interface which is used for adjusting an output current value according to an analog voltage amplitude value of an input dimming signal so as to change luminance of the LED light string. According to the silicon controlled bypass dimming circuit, the input end of the silicon controlled bypass dimming circuit is connected with the AC electric supply, and the output end of the silicon controlled bypass dimming circuit generates a smooth direct current analog voltage signal to serve as a dimming signal which is input into the analog dimming interface of the AC / DC LED constant current actuator. The value of amplitude of the dimming signal output by the silicon controlled bypass dimming circuit can be adjusted by adjusting an adjustable knob of the silicon controlled bypass dimming circuit, and thus a current value and the luminance of the LED light string can be adjusted.

The invention relates to a redundancy-driven three-degree-of-freedom parallel mechanism, and belongs to the technical field of manufacturing of numerical control devices. The parallel mechanism comprises a moving platform and a fixed platform for arranging an actuator, a first branch chain, a second branch chain and a third branch chain with a redundancy driver, wherein the first branch chain and the second branch chain have the same structure, are connected between the moving platform and the fixed platform and are both provided with an actively driven motion pair; the third branch chain is used for realizing rotational degree of freedom and the redundancy driver is applied to the motion pair of the third branch chain; the third branch chain is provided with two driven motion pairs and connected between the moving platform and the fixed platform; the first, second and third branch chains are respectively connected with the moving platform and the fixed platform to form a space parallel closed-loop mechanism; and the space parallel closed-loop mechanism drives the moving platform to move though four input motion pairs so as to realize two moving degree of freedom and one rotational degree of freedom. The parallel mechanism has the advantages of high flexibility, accuracy and rigidity and easy realization of modularization.

The invention discloses a system and a method for modularizing a battery pack balancer based on multi-winding transformers. Through anti-parallel connection of secondary sides of an odd number and an even number of the multi-winding transformers, balancing in modules and between the odd / even number of modules is realized based on forward conversion; the balancing between the odd number and the even number of the modules and the automatic demagnetization of the multi-winding transformers are realized based on flyback conversion; during control, direct, automatic and synchronous balancing from any battery monomer to any battery monomer in a battery pack can be realized just by a pair of control signals which are complementary in states, so that the balancing efficiency and the balancing speed are greatly increased, and the inconsistency between battery monomers can be effectively improved. The system and the method, disclosed by the invention, have the advantages that the balancing efficiency is high, the balancing speed is fast, the volume is small, the cost is low, the reliability is high, modularization is easy, the control is simple, a voltage detection circuit and a demagnetization circuit are not required, and the like.

The invention relates to a high power semiconductor laser therapy instrument with 1064 nm wavelength comprising a power supply 1, a microcontroller unit 2, a 1064nm semiconductor laser linear-array mode 3, a thermoelectric and air-cooled refrigerator 4, a laser beam shaping system 5, a laser indicator 6, a coupler 7, a medical optical fiber 8, a medical head 9, keyboard 10, a voice warning-apparatus 11, a printer 12 and a foot switch13.As the whole solid laser crystal and the large power supply in the Nd:YAG laser are removed comparing with the prior 1064nm wavelength laser therapy instrument using Nd:YAG laser, the laser therapy instrument with 1064 nm wavelength has the advantages of compact size, light weight, high efficiency, simple structure, no water-cooling, simple operation and easy modularization. The semiconductor laser treatment instrument with 1064nm laser output is more concise, economical and practical.