20results about How to "Increase margin" patented technology

Embodiments include, in response to monitoring the processor during operation, detecting a first number of core recovery events in the processor, determining that the first number of core recovery events satisfies a first condition of a first core recovery event threshold, and modifying a value of at least one droop sensor parameter of the processor by a first amount. The at least one droop sensor parameter affects sensitivity to voltage droop. In response to modifying the value of the droop sensor parameter by the first amount, a second number of core recovery events in the processor is detected. A second condition that the second number of core recovery events satisfies a second core recovery event threshold is determined, and the value of the at least one droop sensor parameter is modified by a second amount.

The invention discloses a short-circuit ratio margin-based capacity configuration method and system for a network construction type converter, and belongs to the technical field of new energy grid connection, and the method comprises the steps: constructing a network construction type converter system model, and obtaining a station critical short-circuit ratio; calculating the current short-circuit ratio of the station according to the alternating-current system short-circuit capacity and the grid-connected equipment capacity; setting a target short-circuit ratio margin of the station grid-connected system, calculating and comparing a current short-circuit ratio margin, and if the current short-circuit ratio margin is not less than the target short-circuit ratio margin, indicating that the stable requirement is met; otherwise, based on the target short-circuit ratio margin meter, calculating a corrected short-circuit ratio satisfying the short-circuit ratio margin; and based on the corrected short-circuit ratio, calculating the total capacity of the required network construction type converter. According to the method, the problem that quantitative capacity calculation is lacked for configuration of the network construction type converter for the network following type new energy station in the prior art is solved.

The utility model relates to the technical field of network cable communication, and provides a novel serial-serial-elimination high-speed network cable panel socket distribution frame, which comprises a device main body, a cover plate and a first movable groove, a connecting port is arranged on the outer wall of one side of the device main body, a terminal wire clamping groove is arranged on one side of the device main body far away from the connecting port, and the terminal wire clamping groove is arranged on the other side of the device main body far away from the connecting port. Network cable holes are formed in the inner walls of the terminal wire clamping grooves at equal intervals, fixing grooves and sliding blocks are symmetrically arranged on the inner walls of the two sides of the device main body, a cover plate is movably installed on the inner wall of the device main body through a bearing, buckles are symmetrically installed on the outer walls of the two sides of the cover plate, sliding grooves are symmetrically formed in the outer walls of the two sides of the cover plate, and the clamping buckles are movably installed on the outer walls of the two sides of the cover plate. A baffle is installed on the inner wall of the end, close to the connecting port, of the device body, and a first movable groove and a second movable groove are formed in the outer wall of the top end of the device body at equal intervals. By means of the technical scheme, the problems that in the prior art, a buckle is prone to loosening, and plugging resistance is large are solved.

The invention relates to a civil aircraft airflow angle estimation method considering acceleration correction, and belongs to the technical field of civil aviation. Aiming at the problem that the airflow angle cannot be measured under the condition that a civil aviation passenger plane airflow angle (attack angle and sideslip angle) sensor fails, an airflow angle estimation method based on extended Kalman filtering is given by combining a civil aviation passenger plane nonlinear six-degree-of-freedom model and available navigation information, and adverse effects caused by the fact that an accelerometer deviates from the position of the mass center of the plane are corrected. According to the method, accurate airflow angle estimation can be realized, high-precision airflow angle information is provided under the condition of not adding extra airborne equipment, and the method is of great significance in improving the performance and stability of civil aviation passenger plane core systems such as a flight control system and a flight management system.

The excavating device of the present invention includes a lower arm having a width gradually increasing from one end toward the other end, a fixing hole formed in the outer circumferential surface at the other end, a rotary arm support in a disc shape located on the other end of the lower arm and fixed to the lower arm, an upper arm located on and fixed to the rotary arm support, a guide hole formed in the outer circumferential surface of the rotary arm support, a center joint surrounded by the lower arm, the rotary arm support and the upper arm and exposed to the outside through the fixing hole of the lower arm and the guide hole of the upper arm, and a slip ring inserted into or separated from the center joint through the guide hole of the upper arm.

The application relates to the technical field of power transmission and cable manufacturing, in particular to a high-adhesion and aging-resistant overhead insulated cable based on interface reinforcement and a preparation method thereof. The cable comprises a conductor, an in-situ reactive ceramic-molecular composite anchoring layer, a modulus step buffer layer and a main insulation layer. The conductor adopts a multi-scale stranded structure, the tight pressing coefficient is 0.88-0.91, the surface forms a groove-shaped or axial gap-shaped permeation channel, the anchoring layer comprises a micro-arc oxidation porous ceramic layer and a coupling agent layer, the buffer layer comprises a high-modulus layer and a low-modulus layer, each layer adopts a unified silane crosslinking system to form an integrated crosslinking network, and the high-adhesion and long-life aging-resistant performance between the insulation layer and the conductor is realized through a five-fold synergistic mechanism.

The invention belongs to the technical field of aviation airborne electric compressors, and relates to a radial air foil bearing mounting structure for an airborne electric compressor. Comprising a motor shell, a damping rubber ring, a bearing sleeve, a steel sleeve, a sealing ring, a metal gasket, an anti-loosening gasket, an elastic clamping ring, a stop pin, an air entraining nozzle, a shaft, a motor stator, a motor rotor, an impeller, an interference pin, a fastening screw and an anti-loosening gasket. A notch in the steel sleeve is of an inverted horn-shaped structure with the small outside and the large inside, it is guaranteed that the lap joint foil can freely move and rotate and adapt to rotor deflection during work, meanwhile, a sealing ring between the steel sleeve and the bearing sleeve can be used for vibration reduction in the airborne environment, misalignment installation errors of front and rear radial bearings and the rotor are reduced, and the requirement for the coaxiality of all assemblies is lowered; the sealing ring is used for sealing the radial air bearing, and the actual gap between the sealing ring and the rotor can be flexibly selected according to the cooling flow and the internal pressure maintaining requirement of the bearing.

The invention discloses a fuel cladding breakage rate determination method and device and a fuel cladding monitoring method and system, and relates to the technical field of nuclear industry. The method comprises the following steps: acquiring target neutron kinetic parameters, target power distribution and target burnup of a target reactor core; determining a target fuel parameter and a target thermal hydraulic parameter according to the target neutron kinetic parameter, the target power distribution and the target burnup; and according to the target fuel parameter and the target thermal hydraulic parameter, determining the fuel cladding damage rate in the target reactor core. According to the embodiment of the invention, the method can improve the accuracy of determining the damage rate of the fuel cladding in the large break loss of water accident of the nuclear power plant, and facilitates the selection range of subsequent factory sites with adverse meteorological conditions, inland nuclear power site selection and the like.

The present invention discloses an application scheduling method, device and medium based on energy storage network capability assessment, the method is: obtain relevant parameters of all energy storage devices involved in scheduling, calculate various network capability indicators of each energy storage device in the network capability assessment model, and then calculate the active support capability and reactive support capability of each energy storage device; sort all energy storage devices by active support capability and reactive support capability, and set active scheduling operation plan and reactive scheduling operation plan for all energy storage devices accordingly based on the application requirements of the power grid; according to the instructions of the active and reactive scheduling operation plan, complete the active output control and reactive output control of each scheduling energy storage device through the PCS device, and realize the active and reactive support of the power grid. The present invention provides voltage source and frequency support for large power grids, alleviates the stability problems of transient voltage, frequency and other issues of the power system, and improves the application value of energy storage power grids.

The application provides a chip junction temperature estimation method, device and equipment of a power module and a medium, the method comprises the following steps: acquiring physical parameters, reference point temperature and loss power of each chip in the power module; establishing a simulation model based on the physical parameters; applying the loss power to the simulation power module in the simulation model to obtain simulation junction temperature data; obtaining a thermal impedance matrix based on the simulation junction temperature data, the loss power and the reference point temperature; establishing a thermal network model for estimating the chip junction temperature; comparing the output result of the thermal network model with the actual junction temperature result of the test to correct the thermal impedance matrix; predicting the life of the power module to obtain the aging relationship between the life and the thermal impedance matrix; and estimating the junction temperature of the chip of the power module with different life cycles according to the aging relationship; the reliability and stability of the chip junction temperature estimation are improved, the accuracy of the chip junction temperature estimation is ensured, and the automobile can be safely and reliably driven.

The invention provides a medium repetition frequency PD radar time-frequency domain two-dimensional sliding window ambiguity resolution method and device, and the method comprises the steps: 1, carrying out the distance dimension and speed dimension extension of a distance trace point formed by a multi-frequency period radar echo in an observation range, and determining all possible position and speed information of a target; step 2, quantizing the observation area according to the set quantization unit parameters, and marking all targets in a nine-square manner at the same time; 3, sliding window detection is sequentially carried out on the observation areas after quantitative marking in a matts mode, and whether a target exists or not is judged according to an M / N detection criterion; and 4, detecting and judging the existing target through the step 3, extracting target information by taking the maximum amplitude as a criterion, and clearing the identifier of the observation area of the target. According to the method, the difficulty and the calculation amount of fuzzy understanding are greatly reduced, and meanwhile, the generation of false plots is also reduced by utilizing distance and speed information.

The invention discloses a phase change memory and an operation method, the phase change memory comprises a word line, a bit line and a memory module, the memory module is connected with the word line and the bit line to which a reverse voltage difference is applied in a setting operation, the threshold voltage of the memory module can be reduced, and the performance of the memory module is improved. Therefore, under the condition that the threshold voltage of the memory module after the reset operation is kept unchanged, the difference between the threshold voltage of the memory module after the reset operation and the threshold voltage of the memory module after the setting operation is increased, and the read window margin is further improved.

The utility model provides a high-flexibility STP cable for a vehicle. The high-flexibility STP cable sequentially comprises twisted-pair wire cores, a metal shielding layer, a shielding braid layer and a sheath from inside to outside, and the shielding braid layer is formed by weaving an Alu Coat aluminum coating basalt fiber shielding braid layer on the surface of the metal shielding layer, and adopts 24 ingots and 10 Alu Coat aluminum coating basalt fiber conductors with the monofilament diameter of 0.23 [mu] m to be uniformly attached to the surface of the metal shielding layer. The wire core is composed of seven tinned copper conductors and a foamed PP insulating layer, wherein the maximum diameter of each tinned copper conductor is 0.16 mm, and the outer diameter of each tinned copper conductor is 1.3-2.6 mm. And the sheath is made of a TPU (Thermoplastic Polyurethane) material. The utility model provides the high-flexibility STP cable for the vehicle, which is light in weight, low in cost and stable in structure.

The application discloses a kind of BOSA optical device light beam focal length controllable system and its implementation method, it is related to optical communication technical field, it is solved in prior art because of environmental temperature fluctuation and leads to focal length drift, light beam quality drops and the problem of poor eye diagram quality;Including first focal length quality analysis module, second focal length quality analysis module, intelligent focal length adjustment module and signal optimization module;First focal length quality analysis module predicts future environmental temperature change through long short-term memory network, and plans the best focal length path in advance;Second focal length quality analysis module identifies light beam characteristic parameters using a depth image recognition algorithm, and performs multi-objective optimization in combination with environmental temperature change trend;Intelligent focal length adjustment module dynamically adjusts focal length according to optimization suggestions;Signal optimization module applies a deep learning network for waveform shaping and noise suppression, significantly improving eye diagram quality;The application greatly improves the focal length stability of the system, enhances the performance and reliability of optical communication system.

The invention relates to the technical field of motors, in particular to a high-magnetism-gathering anti-saturation less rare earth permanent magnet and electromagnetic salient pole hybrid excitation motor which comprises a front end cover, a machine shell, a rear end cover, a rotating shaft, a stator and a rotor. The rotor is composed of a rotor iron core, neodymium iron boron permanent magnet steel, ferrite permanent magnet steel and an excitation winding, an even number of salient poles are uniformly distributed on the rotor iron core, arc-shaped contours are processed on two sides of a pole body of each salient pole to form a gourd-like excitation winding groove, the excitation winding is wound in the gourd-like excitation winding groove, and the excitation winding is wound in the excitation winding groove. Magnetic steel grooves for placing ferrite permanent magnet steel are formed in the outer sides of the gourd-like excitation winding grooves; and magnetic steel grooves for placing neodymium iron boron permanent magnet steel and arc-shaped magnetic isolation grooves are formed in the salient pole shoes. According to the invention, the magnetism gathering performance of the salient pole rotor can be effectively improved, the air gap flux density waveform can be improved, the distortion rate can be reduced, and the design of the gourd-like excitation winding grooves can effectively reduce the magnetic circuit saturation of the rotor and improve the torque performance of the motor.

The utility model relates to an LCD (Liquid Crystal Display) pattern structure for realizing gray scale transition. The LCD pattern structure for realizing gray scale transition comprises a first glass plate, a second glass plate and a graphic display assembly, the second glass plate is arranged on the first glass plate, and a liquid crystal box is formed between the second glass plate and the first glass plate; the graphic display assembly comprises a plurality of graphic blocks, all the graphic blocks are arranged in the liquid crystal box, and a gap is formed between every two adjacent graphic blocks. According to the scheme provided by the invention, gradient color display can be realized on the stroke segment type display screen, so that the display effect is richer.

This invention provides a fault-tolerant control system and method for a magnetic levitation motor based on virtual sensing technology, relating to the field of magnetic levitation motor technology. The system includes a magnetic levitation motor body, a turbine expander, a measurement and monitoring unit, a power amplification and power supply unit, and a digital controller. The digital controller receives multi-source signals synchronously acquired by the measurement and monitoring unit to obtain the physical measured displacement of the rotor. It performs a mechanism-data dual-drive composite aerodynamic disturbance estimation for the magnetic levitation motor to obtain the aerodynamic compensation force and calculate the virtual displacement of the magnetic levitation rotor. It performs orthogonal reconstruction of the physical measured displacement and the virtual displacement to obtain the reconstructed displacement feedback signal for the digital controller to control the rotor. The digital controller calculates the basic feedback control quantity based on the closed-loop error according to the reference levitation control law. The digital controller reassembles the feedback source, aerodynamic compensation force, and control parameters of the basic feedback control quantity online to form the final control output.

This invention provides a pressure detection system, control method, and vehicle for an EGR valve, relating to the field of vehicle technology. The EGR valve pressure detection system includes a pressure measuring device, a first air pipe, a second air pipe, and a cleaning device. The pressure measuring device includes an inner cavity and a detection unit disposed within the inner cavity. The inner cavity is connected to the inlet and outlet ends of the EGR valve via the first and second air pipes, respectively. The detection unit is used to detect the pressure in the first and second air pipes within the inner cavity. The cleaning device is connected to the inner cavity and is used to clean the inner cavity with gas. The beneficial effect of this invention is that it can reduce the margin in the EGR rate calibration, thereby improving engine thermal efficiency.

The invention discloses a transient stability adaptive damping control method and system for a multi-network power supply system. The method comprises the following steps: acquiring an adaptive coefficient of a virtual synchronous machine of the multi-network power supply system under a current working condition; obtaining an angular frequency deviation according to the converter output angular frequency instruction value and the converter output angular frequency actual value at the previous moment; obtaining a dynamic damping increment according to the adaptive coefficient and the angular frequency deviation; equivalent damping is obtained according to the virtual damping and the dynamic damping increment; and according to the equivalent damping, the virtual inertia, a converter output active power actual value and an active power instruction value, a converter output angular frequency instruction value and a converter output angular frequency actual value at the previous moment, performing active power control of the virtual synchronous machine by using an active power control equation after the self-adaptive damping coefficient is introduced. And obtaining a current converter output angular frequency actual value.

The embodiment of the invention discloses a memory device, an operation method thereof and a readable storage medium, and the memory device comprises a first storage area and a second storage area which respectively comprise a plurality of storage units; the peripheral circuit is coupled with the first storage area and the second storage area and is configured to perform first programming operation on a to-be-programmed storage unit in the first storage area by adopting a first programming voltage which is gradually increased when data is written into the first storage area, and to perform second programming operation on the to-be-programmed storage unit in the second storage area by adopting a second programming voltage which is gradually increased when data is written into the second storage area; the two adjacent first programming voltages have a first difference value; when data in the first storage area is written into the second storage area, second programming voltage which is gradually increased is adopted to carry out second programming operation on the to-be-programmed storage unit in the second storage area, and a second difference value exists between two adjacent second programming voltages; wherein the second difference value is smaller than the first difference value.