158results about How to "Improve output performance" patented technology

The invention discloses an industry report generation optimization method and system based on reinforcement learning and a knowledge graph, and relates to the technical field of industry report generation, and the method comprises the following steps: firstly, collecting industry data from multiple sources, preprocessing the industry data, determining the collection frequency according to the type and importance, then constructing the knowledge graph, and recognizing entities by using a plurality of technologies. Designing a reinforcement learning model, defining space and reward functions such as states and actions, training according to a specific algorithm, analyzing and generating a preliminary report according to user requirements by means of the model and graph selection data, combining an optimization algorithm with a language model and a graph to improve the report, and finally evaluating, feeding back and adjusting a parameter strategy to improve system performance. The method can improve the industry report generation efficiency, optimize the report quality, enhance the depth and accuracy, adapt to different requirements, can be self-promoted, and effectively assists the decision and development of each industry.

The invention relates to the technical field of digital audio processing, in particular to a digital audio processing method and system for sound equipment. The system comprises an audio signal acquisition module, a signal analysis module, an adaptive adjustment module, a howling suppression module and a sound effect optimization feedback module. The audio signal acquisition module acquires data such as frequency spectrum and amplitude of the sound equipment in real time. And the signal analysis module generates a signal analysis report based on a non-negative matrix factorization algorithm and a generative adversarial network algorithm. And the adaptive adjustment module automatically adjusts audio parameters through a fuzzy logic control algorithm. The howling suppression module suppresses howling noise by using an adaptive feedback cancellation algorithm. And the sound effect optimization feedback module adopts a Bezier curve to enhance the sound effect and realize frequency, phase and space positioning optimization. Through cooperative processing of audio acquisition, accurate analysis, adaptive adjustment, howling suppression and spatial sound effect optimization, the audio quality and stability are improved, and the audio spatial effect and user experience are enhanced.

The invention discloses a system and a method for security enhancement of generated content information of a large model, and the method comprises the steps: firstly, carrying out the bidirectional LoRA fine tuning technology and knowledge distillation technology on the large model, and enabling the large model to adapt to a factual output task from the illusion dimension and the factual dimension; performing extraction of intermediate layer representation in a fact space on the fine-tuned large model, and obtaining different mappings from fine-grained illusion types to a fact direction through a comparative learning method; and finally, in the reasoning generation process of the large model, extracting the representation of the middle layer of the large model to judge the potential illusion type, then applying the learned mapping corresponding to different illusions to the middle representation of the reasoning process, correcting factual representation, reducing the illusion output probability, and in the pre-training stage and the reasoning generation stage, obtaining the illusion type of the large model. Parameters and generated contents of the large model are controlled, and the factuality and reliability of the generated contents of the large model are greatly improved while the generation capability of the large model is guaranteed.

The invention relates to the technical field of fuel cells, in particular to an output voltage analysis method, device and equipment of a proton exchange membrane fuel cell, and the method comprises the following steps: establishing an equivalent circuit model, a gas flow model and a thermodynamic model of a target proton exchange membrane fuel cell; constructing a simulation model of the proton exchange membrane fuel cell according to the equivalent circuit model, the gas flow model and the thermodynamic model, and simulating stack starting based on the simulation model to obtain an output voltage change result and a temperature change result of the target proton exchange membrane fuel cell; and obtaining an output voltage analysis result of the target proton exchange membrane fuel cell according to the output voltage change result and the temperature change result. Therefore, the problems that modeling based on an electrochemical model is limited in applicable scene and low in modeling precision are solved, the applicable scene is wide, and the modeling precision is accurate.

The invention relates to a charging type moisture power generation device based on a double-layer polymer film and a preparation method thereof, and belongs to the technical field of moisture power generation. Comprising an active electrode, double-layer polymer films and an inert porous electrode which are sequentially arranged, the first polymer film of the double-layer polymer films is a mixture of ferric hydroxide, polystyrolsulfon acid and polyvinyl alcohol, the second polymer film of the double-layer polymer films is poly (diallyldimethylammonium chloride), the first polymer film is in contact with the active electrode, and the second polymer film is in contact with the inert porous electrode. The second layer of polymer film is in contact with the inert porous electrode; the active electrode is made of metal with the standard electrode potential ranging from-1 V to + 0.5 V, and the inert porous electrode is made of metal with the standard electrode potential larger than + 1 V. Through moisture evaporation and an oxidation-reduction reaction, the battery can generate electricity by itself in a moisture environment, and can be self-repaired through the oxidation-reduction reaction when the performance is reduced, so that a charging effect is achieved.

The invention discloses an electric power system operation maintenance method and system based on a retrieval enhancement technology, and the method comprises the steps: carrying out the weight analysis of each layer of a preset large model in the training process of the preset large model, and carrying out the dynamic freezing of the layers meeting a preset condition in the preset large model, so as to obtain a full-parameter fine-tuning large model; based on a Mangban architecture base retriever, introducing a KAN network to optimize each layer parameter in the base retriever to obtain a first retriever; performing integrated optimization on the first retriever through a gating expert integrated network to obtain a second retriever; thirdly, an enhanced data set is constructed according to a result output by the full-parameter fine-tuning large model, and a second retriever is trained according to the enhanced data set to obtain a target retriever; and integrating the target retriever and the full-parameter fine tuning large model to obtain a target operation and maintenance large model, and executing a matched operation and maintenance strategy according to an operation and maintenance result output by the target operation and maintenance large model so as to maintain the stability of the power system.

The embodiment of the invention discloses a fuel cell system fault processing method and device, and the method comprises the steps: carrying out the AC impedance spectrum test of a fuel cell, obtaining an AC impedance spectrum, building an equivalent circuit model for the reaction process of the fuel cell, carrying out the fitting of the equivalent circuit model according to the AC impedance spectrum, and obtaining the fault of the fuel cell system. Obtaining impedance data corresponding to each reaction process of the fuel cell; determining residual data between the impedance data corresponding to each reaction process of the fuel cell and the corresponding theoretical data; determining a data change trend of the impedance data according to the residual data; and performing fault diagnosis according to the data change trend to obtain a fault diagnosis result of the fuel cell. According to the fuel cell system fault processing method provided by the invention, the fault of the fuel cell can be diagnosed timely, accurately and comprehensively, the reliability and durability of the fuel cell system are improved, and the service life of the fuel cell is prolonged.

The invention relates to the technical field of stator core production, in particular to a brushless motor stator core full-automatic production line which comprises a first punching mechanism, a second punching mechanism, a first feeding mechanism, a second feeding mechanism, a lamination conveying mechanism, an assembling jig, a welding mechanism and a discharging mechanism. The first punching mechanism is used for punching a first stator iron sheet, the second punching mechanism is used for punching a second stator iron sheet, the first feeding mechanism is used for grabbing a first stator iron sheet punched by the first punching mechanism and placing the first stator iron sheet on the assembling jig to be assembled into a first stator iron ring, and the second feeding mechanism is used for grabbing the second stator iron sheet punched by the second punching mechanism and placing the second stator iron sheet on the assembling jig to be assembled into a second stator iron ring. And stacking the first stator iron rings placed on the assembling jig to form a second stator iron ring. Through the design of high automation and integration, the production efficiency is remarkably improved, and the product quality is stable and reliable.

The invention relates to the technical field of stator core production, in particular to a motor stator core automatic processing and forming method, which comprises a first punching mechanism, a second punching mechanism, a first feeding mechanism, a second feeding mechanism, a lamination conveying mechanism, an assembling jig, a welding mechanism and a discharging mechanism, the first punching mechanism is used for punching a first stator iron sheet, the second punching mechanism is used for punching a second stator iron sheet, the first feeding mechanism is used for grabbing a first stator iron sheet punched by the first punching mechanism and placing the first stator iron sheet on the assembling jig to be assembled into a first stator iron ring, and the second feeding mechanism is used for grabbing the second stator iron sheet punched by the second punching mechanism and placing the second stator iron sheet on the assembling jig to be assembled into a second stator iron ring. And stacking the first stator iron rings placed on the assembling jig to form a second stator iron ring. By means of a series of automatic and precise processing steps, efficient, precise and stable production of the stator iron core is achieved. According to the method, the production efficiency is improved, the production cost is reduced, and the quality and reliability of products are remarkably improved.

A hand posture estimation method based on dual aggregation network enhancement comprises the following steps: generating a hand point cloud from a hand depth image, and inputting the hand depth image and the point cloud into a local coding fusion module to generate fused image features and point cloud features; inputting the fused 3D point cloud features into an initial state generator to initialize a hidden state; inputting the hidden state into a regression module to obtain initial estimation of a joint point; initially estimating and fusing the image features and the point cloud features, and inputting the image features and the point cloud features into a point cloud image consistency aggregation module to generate enhanced point cloud features; the enhanced point cloud feature and initial estimation input resampling module outputs high-dimensional hand joint point features; the enhanced point cloud features, the high-dimensional hand articulation point features and the hidden state are jointly input into a dynamic graph enhanced aggregation module to obtain enhanced high-dimensional articulation point features; and inputting the enhanced high-dimensional joint point features into a regression module to obtain a final hand joint point coordinate position. According to the method, gesture posture estimation under the shielding condition can be improved, and hand joint output is enhanced.

The utility model discloses a kind of micro high-output capacity's insensitive electric ignition tube, belong to the technical field of pyrotechnics, including shell (1), in the shell (1) from below to above sequentially provided with insulating sheet (8), electrostatic discharge ring (7) and electrode plug (6), the two pins (61) of the electrode plug (6) from the lower end of shell (1) stretch out shell (1) outside, the upper end surface of the electrode plug (6) is provided with bridge wire (5), the bridge wire (5) is communicated with two pins (61), the upper end surface of electrode plug (6) is provided with charge ring (4), in the charge ring (4) is provided with ignition powder (3), in the upper end surface of the ignition powder (3) is provided with cover sheet (2);The utility model makes the insensitive scheme that satisfies in GJB344A-2020 under the size frame as small as possible, simultaneously has enough big output capacity.

The invention relates to an oil pump motor and dual-motor integrated control device applied to a new energy automobile. The oil pump motor and dual-motor integrated control device comprises a control device shell, a protective cover, an oil pump motor and dual-motor control unit, a control unit mounting shell, an anti-interference shielding assembly, a cooling support assembly and a six-phase detection assembly. The anti-interference shielding assembly, the cooling support assembly, the control unit installation shell and the six-phase detection assembly are installed in the control device shell, the oil pump motor and the dual-motor control unit are installed in the control unit installation shell, and the protection cover covers the control unit installation shell. Compared with the prior art, the power generator controller, the driving motor controller and the oil pump motor controller are integrated in the oil pump motor and the dual-motor control unit, the integration requirement of the new energy automobile market is better met, parts such as external wire harnesses and circuit boards are saved, the integration degree is high, and the size and the cost are saved; and the two paths of current realize the advantages of supplying power to the generator, the driving motor and the oil pump motor and the like.

The application discloses a kind of carbon black granulating equipment, it is related to carbon black granulating technical field, including conveying cabin and granulating equipment, the granulating equipment is assembled in the middle area of conveying cabin, and the top end of granulating equipment is connected with steam pipeline, the top of conveying cabin is connected with raw material inlet, the inside of conveying cabin is movably equipped with auger blade.The carbon black granulating equipment, by the cooperation of cold air unit and second connecting pipe and air inlet pipe and through opening, so that the carbon black granulating equipment in the working process, cold air unit preparation wind beam, and wind beam is input into air inlet pipe by second connecting pipe, wind beam in air inlet pipe is sprayed through through opening, act on the carbon black particles that will be output in conveying cabin, cooperate with the output of output pipe auxiliary carbon black particles, avoid carbon black particles to adhere in the inner wall of conveying cabin or the outside of auger blade, to reduce the residue of carbon black particles in equipment, improve the output effect of product in equipment.

This application provides a highly integrated hydraulic power unit and its working method, relating to the field of hydraulic system technology. The unit includes a housing, a hydraulic pump, and a motor. The housing has an oil storage chamber, and the hydraulic pump is connected to the oil storage chamber and pumps hydraulic oil under the drive of the motor. The built-in oil storage chamber allows the oil supply process to occur entirely within the housing, eliminating the need for an external oil supply system, effectively reducing the overall size of the pump, and avoiding exposed oil supply lines. This application features multiple return oil channels around the motor, utilizing the hydraulic oil circulation process to cool the motor, enabling the installation of a high-power motor to increase power density. Furthermore, by implementing pressure-holding and shock-prevention measures, this application ensures that the pressure inside the oil tank remains positive, preventing instantaneous high-pressure shocks to the hydraulic pump. This allows the motor pump to continue pumping oil normally under harsh conditions, adapting to the shaking and swaying of mobile equipment during operation, and meeting the requirements for stable operation under adverse conditions.

The invention belongs to the technical field of flexible piezoelectric sensors, and relates to a carbon felt-hydrogel composite piezoelectric sensor and a preparation method thereof. The sensor comprises a piezoelectric sensing layer, a cross-scale dual-network hydrogel layer, an electrode layer, a leading-out wire and a packaging layer, the two cross-scale dual-network hydrogel layers are arranged on the upper side and the lower side of the piezoelectric sensing layer in a stacked mode to form a sandwich structure. The cross-scale dual-network hydrogel layer is an elastic hydrogel material formed by compounding a carbon fiber felt skeleton and a molecular-level network polymer, and the molecular-level network polymer penetrates through the interior and the surface of the carbon fiber felt skeleton and is formed by cross-linking and curing; the number of the electrode layers is two, and the two electrode layers are arranged on the outer sides of the two cross-scale dual-network hydrogel layers in a stacked mode respectively. The lead-out wire is electrically connected with the electrode layer; the packaging layer wraps the outer side of the electrode layer. According to the sensor, the mechanical property, the conductivity and the stability of the flexible piezoelectric sensor can be improved.

The application discloses a kind of gas diffusion layer and its preparation method and application, it is related to fuel cell technical field.The gas diffusion layer includes conductive substrate layer and hydrophobic filling layer, multiple channels are opened in conductive substrate layer and pass through its thickness, multiple channels include first channel and second channel different in aperture, and the pore wall surface of channel has hydrophilicity, hydrophobic filling layer is filled in channel and covers the surface of one side of conductive substrate layer, and hydrophobic filling layer has hydrophobicity, wherein, the inner wall surface of channel and the gap between hydrophobic filling layer filled in channel are formed.The present application utilizes the wettability gradient formed by hydrophilic pore wall and hydrophobic filling layer, combines interface gap and multi-level pore array structure, realizes the spatial complementation of liquid water directional discharge and reaction gas efficient permeation, can solve the performance attenuation problem caused by fuel cell cathode waterlogging under high current density, is conducive to improving water management capability and battery output performance.

The invention discloses a session output method and device based on a large language model, a storage medium and equipment, relates to the technical field of artificial intelligence and language processing, and mainly aims at solving the problem that an existing session output effect is poor. Comprising the steps of obtaining first voice compression data transmitted by a client based on a first slice data stream, and performing decompression conversion on the first voice compression data to obtain a first session text; outputting the first session text to the client, and updating the first session text based on second voice compression data obtained by a second slice data stream to obtain a second session text; and if the second session text is a question session text, searching a reply word corresponding to the question session text, processing the reply word based on the large language model which completes model training to obtain a reply session text, and outputting the reply session text to the client.

A bipolar multi-mode magnetic field generator comprises a positive polarity circuit, a negative polarity circuit and a load coil; the positive polarity circuit comprises a positive polarity charging module, a positive polarity energy feedback circuit module and n positive polarity single-stage discharge modules; the negative polarity circuit comprises a negative polarity charging module, a negative polarity energy feedback circuit module and n negative polarity single-stage discharge modules. The bipolar pulse magnetic field can be outputted through the synergistic effect of the positive and negative polarity circuits. Meanwhile, the pulse source has an energy feedback circuit structure, and the system energy saving and the coil temperature rise reduction can be realized through the commutation switch. In addition, the pulse source has a modular structure, and the various output modes can be realized through the module switch timing control, thereby greatly improving the output performance of the pulse magnetic field generator on the basis of ensuring the reliable operation. The output mode can be flexibly selected, and the bipolar triangular wave and the bipolar exponential wave output modes can be realized.

A multi-parameter and multi-objective optimization design method for a single-phase induction motor relates to a motor optimization design method, comprising step 1: obtaining electromagnetic noise data of the single-phase induction motor prototype through an electromagnetic noise test experiment of the single-phase induction motor prototype, analyzing the electromagnetic noise amplitude-frequency characteristics of the single-phase induction motor prototype using the test data, and finding the frequency component whose amplitude is greater than a set threshold; step 2: optimizing geometric structure parameters using an electromagnetic finite element model of the single-phase induction motor; step 3: optimizing circuit parameters using an electromagnetic analytical model of the single-phase induction motor. The present invention can quickly improve motor output performance and NVH performance by changing motor geometric structure parameters and circuit parameters on the basis of the prototype, thereby improving the market competitiveness of the product.

The present invention belongs to the technical field related to nano power generation equipment, and discloses a hybrid friction nano generator, which includes an insulating packaging layer, a grounding shielding layer, an insulating layer, a first conductive element, a first friction layer placed in contact with the lower surface of the first conductive element, a second conductive element, a second friction layer placed in contact with the upper surface of the second conductive element, and a third friction layer located between the first friction layer and the second friction layer. When working, the lower surface of the first friction layer and the upper surface of the second friction layer are respectively contacted and separated from the upper and lower surfaces of the third friction layer under the action of external force, generating relative sliding friction. At the same time, according to the size and direction of the applied external force, the friction area of ​​the two changes, and an AC pulse electrical signal is output to the external circuit through the conductive element. Through the present invention, not only can the power generation efficiency and output capacity of the nano generator be effectively improved, but also the nano power generation sensor can be given better comprehensive performance.

The utility model relates to the technical field of mechanical refrigeration, and provides a pre-cooling type JT throttling refrigerating machine which comprises a pre-cooler provided with a cold head. A linear driving mechanism; the compression unit is connected with the linear driving mechanism and outputs a high-pressure gas working medium under the action of the linear driving mechanism; the vacuum cover is used for providing a vacuum heat insulation effect; the compression unit and the cold head are coupled and are positioned in the vacuum cover; the heat exchanger is used for pre-cooling the high-pressure incoming flow gas by utilizing the backflow cold gas; the throttling valve penetrates through the heat exchanger and communicates with the high-pressure end of the compression unit; one end of the evaporator is connected with the throttle valve, and the other end penetrates through the heat exchanger and is connected with the low-pressure end of the compression unit. According to the utility model, the compression unit for driving the throttling working medium is placed in the vacuum cover at a low temperature, so that the output performance of the compression unit is improved, and the system efficiency of the refrigerator is improved; in addition, the compression unit is directly coupled with the cold head, the system structure is simplified, and the efficiency of the refrigerating system is improved.

This invention discloses a gas diffusion layer with multi-level mass transfer channels, its preparation method, and its application. The gas diffusion layer with multi-level mass transfer channels includes a substrate layer and a microporous layer on the substrate layer; wherein the microporous layer comprises carbon black, hollow porous carbon nanofibers, and optionally a hydrophobic binder. This invention uses hollow porous carbon nanofibers as a novel MPL carbon material to synergistically construct a gas diffusion layer with better water vapor management capabilities in conjunction with carbon black particles. The resulting gas diffusion layer exhibits excellent comprehensive performance; its hollow porous structure provides additional water transport channels, improving water vapor transport capacity, thereby enabling the assembled membrane electrode to have better output performance.

This utility model relates to the field of fluid circulation system technology, specifically disclosing an electronic oil pump with an internal circulation flow control structure. The electronic oil pump includes a pump body with a cavity. The cavity is divided into an outer circulation cavity and an inner circulation cavity by a partition. The outer circulation cavity supplies oil to external oil-using equipment. The inner circulation cavity houses a motor and a controller, and the partition has an oil hole. The electronic oil pump also includes a one-way control unit located in the inner circulation cavity and connected to the partition. The one-way control unit covers the oil hole, enabling automatic adjustment of the oil flow channel opening based on oil pressure. The oil flow channel is the oil flow path formed by the oil hole and the one-way control unit. This solves the problem in the prior art where electronic oil pumps struggle to dynamically adjust the internal circulation flow according to actual operating conditions.

The application discloses a magnetic isolation plate, a rotor, a motor and a vehicle, and belongs to the technical field of motors. The magnetic isolation plate comprises a plate body, wherein the plate body comprises: a first flow guide groove arranged on a first side of the plate body, the first flow guide groove being configured to throw out cooling liquid flowing through the first flow guide groove outward by centrifugal force when the plate body rotates around a first axis, so as to cool a stator assembly; and a second flow guide groove arranged on a second side of the plate body, the second flow guide groove being configured to make liquid flowing through the second flow guide groove flow to a rotor assembly when the plate body rotates around the first axis, so as to cool the rotor assembly, which helps to reduce the overall temperature rise of the motor, thereby helping the motor to maintain stable output performance and improving the stability and long-term reliability of system operation.

The invention relates to the technical field of synchronous motors, and discloses an efficient busbar connection permanent magnet synchronous motor which comprises a motor stator, a busbar and a connection module, the section of the motor stator is in a circular ring shape, the motor stator is arranged in the motor, the inner side of the motor stator is used for placing a motor rotor, and a stator winding is arranged in the motor stator and is a winding coil; two coils with different diameters are arranged in the stator winding, the two coils are uniformly arrayed along the circumference of the motor stator, the motor can generate different rated powers to drive the rotor to move under the condition that the coils with different diameters work independently, connecting end pins are arrayed on the busbar, and the connecting end pins are connected with the stator winding. The ends of different stator windings are connected with different connecting end pins, the other ends of the connecting end pins are connected with a connecting module, the connecting module is provided with a power supply interface connected with a power supply end, and the connecting module can control a power supply to flow into different connecting end pins in the busbar so as to realize power-on and power-off of coils with different diameters in the stator windings.

The invention discloses a heat dissipation structure of a power module, belongs to the technical field of heat dissipation of the power module, aims at achieving efficient heat dissipation and improving the output performance of the power module on the basis of achieving miniaturization of the power module, and provides a heat dissipation structure based on a PCB, the power module based on the heat dissipation structure and an inverter system based on the heat dissipation structure. The integrated inverter system in a full-PCB mode can be achieved, the compact type is high, heat dissipation of the power chip is good, three-dimensional packaging of the inverter system and the power chip is achieved through device embedding type design, loop inductance is effectively reduced through lamination design of the PCB, the electric stress in system operation is reduced, the safety and reliability of operation are improved, and the reliability of the inverter system is improved. Meanwhile, the improvement design of the system performance is also facilitated; meanwhile, the designed heat dissipation structure based on the PCB is different from a traditional metal heat dissipation structure, and a driving circuit and a control circuit in the inverter system can stretch across the structure for heat dissipation.

The invention relates to the technical field of drilling equipment. The invention provides a rotor, a motor and a screw drill. The rotor comprises a rotor body, and the outer surface of the rotor body is a continuous cycloid spiral curved surface; the rotor main body is provided with a first end and a second end which are oppositely arranged, and a first section body, a middle section body and a second section body which are sequentially arranged along the axis direction of the rotor main body; the outer diameter of the first section body is gradually reduced from the first end to the second end, and the outer diameter of the second section body is gradually reduced from the second end to the first end. The problems that an existing screw drill is large in leakage loss and low in efficiency are solved.

The application provides a Mg3Sb2-based thermoelectric device and a preparation method thereof, and belongs to the technical field of thermoelectric materials. The Mg3Sb2-based thermoelectric material is made into a powder, and the Mg3Sb2-based thermoelectric device is prepared by using a 3D printing mode; the thermoelectric arm material structure is dense, and the conductivity is good; the thermoelectric device pattern can be flexibly designed according to the application scene by using the 3D printing mode, the application range is wide, and the thermoelectric device with high integration and high power density is easy to prepare; the thermoelectric device preparation process is simple and efficient by using the 3D printing mode, and the development of the batch production technology of the flexible micro thermoelectric device is promoted; the electrode material is connected by using the 3D printing mode, the contact resistance between the electrode material and the thermoelectric material is small, and the output performance of the thermoelectric device is improved.

The utility model discloses a stator punching sheet, a stator core, a motor and refrigeration equipment, and relates to the refrigeration equipment technology field, the stator punching sheet comprises a plurality of punching sheet units, the plurality of punching sheet units are sequentially connected end to end in an annular shape to form the stator punching sheet, each punching sheet unit comprises a stator yoke, stator teeth and tooth boots, and the tooth boots are arranged on the stator yoke. The stator teeth are connected to the stator yokes, the tooth boots are connected to the ends, deviating from the stator yokes, of the stator teeth, the stator teeth are located on the inner circumferential wall of the stator punching sheet, the distance between the outer walls of any two oppositely-arranged stator yokes is D1, the minimum distance between any two oppositely-arranged tooth boots is D2, and D1 is larger than D2. The width of the stator teeth is W1, and the width of the stator yoke is h0. According to the technical scheme provided by the utility model, the overload capacity of the motor is improved, the demagnetization performance of the motor is reduced, the output performance of the motor is improved, and the production and manufacturing cost of the stator punching sheet is reduced.

The invention provides a broadband harmonic suppression matching circuit, a power amplifier and a power amplifier module, and the broadband harmonic suppression matching circuit comprises a first harmonic suppression and biasing circuit and a second harmonic suppression and biasing circuit, comprising a first circuit element and a ground capacitor which constitute a bias circuit, a second circuit element and a third circuit element which are connected with the first circuit element and constitute a resonant network, and the sum of the electrical lengths of the first circuit element and the second circuit element is lambda / 6; the second harmonic suppression and fundamental wave impedance matching circuit comprises a multi-order LC resonance network, the multi-order LC resonance network comprises a fourth circuit element and a fifth circuit element which are connected with the third circuit element in series, and the fourth circuit element and the fifth circuit element are used for completing in-band fundamental wave impedance matching; wherein each circuit element is a microstrip line or a lumped element.