11results about How to "Guaranteed output stability" patented technology

The invention relates to a control method and device of a load simulation device for a cabinet soft start test, and relates to the field of soft start tests.The control method comprises the steps that gear selection is conducted on the load simulation device according to a gear simulation scheme, and the current selected load power is recorded; temperature values of components in the load simulation device are collected in real time; calculating temperature drift information according to the component temperature value and the reference operation temperature range; load deviation information is matched according to the temperature drift information, the current selected load power is corrected to obtain operation load power, and the operation load power is output to a control panel; a temperature control adjustment scheme is matched according to the positive and negative relation of the temperature drift information, and the temperature value of the component is adjusted according to the temperature control adjustment scheme; and when the operation load power displayed by the control panel is consistent with the current selected load power, the temperature control regulation of the load simulation device is stopped, and a test waiting state is entered. The load simulation device has the effect of eliminating temperature influence to guarantee the output stability of the load simulation device.

The unmanned aerial vehicle optimal path adaptive planning method based on particle swarm optimization relates to the field of unmanned aerial vehicle path planning, and comprises the following steps: constructing a spatial constraint model of an unmanned aerial vehicle flight task; initializing a particle swarm based on the spatial constraint model; combining path smoothness, path threat probability and voyage efficiency to establish a multi-objective fitness function, and calculating the fitness value of each particle based on the particle swarm; performing hierarchical particle swarm optimization iteration, in each iteration, adaptively adjusting the control parameters based on the current particle swarm distribution characteristics, and updating the path node position of the particles; when the convergence condition is met, outputting the global optimal path as the final flight trajectory of the unmanned aerial vehicle, and controlling the unmanned aerial vehicle to execute. The unmanned aerial vehicle optimal path adaptive planning method based on particle swarm optimization solves the problems that the unmanned aerial vehicle route path optimization target is single and difficult to coordinate, and the route planning path effect is poor.

The invention discloses a unipolar and bipolar pulse generating device for electric field ablation and a control method, and relates to the technical field of electric field ablation. The unipolar and bipolar pulse generating device comprises a high-voltage charging module, a half-bridge series pulse generating module and a driving control module; the high-voltage charging module provides high-voltage electric energy for the half-bridge series pulse generation module; the driving control module is connected with the half-bridge series pulse generation module and is used for controlling the on-off of a switch of the half-bridge series pulse generation module; one end of the load matching and protection module is connected with the half-bridge series pulse generation module, and the other end is connected with a load to realize pulse matching transmission and safety protection. The technical scheme that unipolar and bipolar can be freely switched is adopted, dual optimization of the ablation effect and operation safety is achieved, ablation pretreatment is conducted in a bipolar mode, and an ablation blind area caused by the single unipolar electric field direction is eliminated through alternate positive and negative pulses.

This invention discloses a GM pulse tube refrigerator and a flow-splitting method for the pulse tube refrigerator, comprising a helium compressor, a primary accumulator, a secondary accumulator, a secondary pulse tube, and a primary pulse tube. The helium compressor is connected to the primary accumulator. The key feature is that a flow-splitting structure is provided at the connection end between the primary and secondary accumulators, with a primary gas channel and a secondary gas channel on the flow-splitting structure. The primary accumulator is connected to the primary pulse tube through the primary gas channel. In this invention, by setting a gas flow-splitting structure in the cold end of the GM pulse tube refrigerator, and by setting primary and secondary gas channels, and by changing the effective area ratio of the primary and secondary gas channels, the amount of helium entering the primary and secondary pulse tubes is configured, ensuring sufficient primary cooling and secondary pre-cooling. This rationally distributes the gas volume to achieve the expected primary and secondary cooling performance, ensuring ideal flow rates at deep cryogenic temperatures and guaranteeing stable cooling output.

The application discloses a kind of double-stator permanent magnet motor multi-objective optimization design method and motor considering multiple working conditions performance, according to multiple operating modes of double-stator permanent magnet motor and corresponding torque, efficiency demand, determine the design parameters of inner and outer stator and rotor and multi-working condition optimization target;Establish initialization finite element simulation model, collect data by uniform sampling to design parameters and optimization target, carry out correlation analysis and according to the result, eliminate the parameters with low correlation;The conflict relationship between optimization targets is analyzed using the aggregation tree algorithm, representative targets are extracted, and the target dimension reduction is completed;The reduced data is used to train a proxy model, and the proxy model is applied to a multi-objective optimization algorithm to optimize the motor performance.Finally, the motor design scheme is simulated and evaluated.The application solves the problem of excessive design parameters and optimization targets caused by multiple working conditions and complex motor structure of double-stator permanent magnet motor, and improves the optimization efficiency while improving the comprehensive performance.

A stator core, a birotor motor and a clothes dryer, the stator core comprises a plurality of outer stator wire slots and a plurality of inner stator wire slots, the outer stator wire slots and the inner stator wire slots are formed by separating a plurality of tooth parts uniformly distributed on yoke parts, and the extension directions of the tooth parts on the two yoke parts are opposite. The plurality of inner stator wire slots are used for accommodating stator windings to form an inner magnetic field, the plurality of outer stator wire slots are used for accommodating stator windings to form an outer magnetic field, and at least one yoke part is provided with a magnetic resistance structure used for inhibiting mutual interference between the inner magnetic field and the outer magnetic field. According to the utility model, on the premise of ensuring the output stability and efficiency of the double-rotor motor, the distance between the outer stator wire duct and the inner stator wire duct can be reduced, so that the outer diameter of the stator core is reduced, the size of the stator is reduced, and the size of the double-rotor motor is smaller; therefore, the double-rotor motor is suitable for a clothes dryer and other scenes with high volume requirements, and the equipment compactness is improved.

The application discloses a super capacitor energy storage power energy optimization system based on a Boost converter, relates to the technical field of power supply or power distribution circuit devices and electric energy storage systems, and comprises a pre-charging circuit, a super capacitor energy storage device, a Boost circuit, an LLC full-bridge inverter circuit, a rectification filtering and buffering circuit, a detection unit and a controller. The Boost circuit is connected between the super capacitor energy storage device and the LLC full-bridge inverter circuit and is used for boosting voltage when the output voltage of the super capacitor energy storage device is lower than a preset threshold value. The data acquisition unit acquires data to regulate and control the boosting work of the Boost circuit and the driving logic of the LLC full-bridge inverter circuit. The application adds the Boost circuit between the super capacitor energy storage device and the full-bridge inverter circuit, and solves the problems of low energy utilization rate and unstable output of the existing super capacitor energy storage high-voltage power supply.

The invention discloses a vehicle-mounted special-shaped structure self-adaptive loudspeaker system, which relates to the technical field of electroacoustic transducers and vehicle-mounted audio systems and comprises a special-shaped vibrating diaphragm module, a magnetic circuit driving module and a boundary coupling module. The special-shaped vibrating diaphragm module is in a non-axisymmetric shape, and a non-uniform stiffness gradient is constructed through local physical thickening or carbon fiber reinforcement, so that the stiffness of the vertex is greater than that of the center to suppress segmentation vibration; the magnetic circuit driving module utilizes asymmetric magnetic gaps with gradually-changed widths to be matched with variable-density coils to balance stress distribution of long and short shafts so as to correct driving distortion; the boundary coupling module integrates a shape memory alloy framework and a flexible sealing body, and self-adaptive radial expansion locking of a mounting interface is achieved. Through the design, the problems of vibration mode disorder and complex space sealing adaptation of the special-shaped loudspeaker are solved, sound short circuit is effectively eradicated, resonance is isolated, and the tone quality reduction degree and transient response performance of a non-standard installation position in a cabin are improved.

This application relates to the field of smart meter technology, specifically to a smart meter designed to address the technical problem of reducing power consumption in smart meters, thereby ensuring product compliance and improving the product's green energy efficiency. To this end, the smart meter of this application includes a rectifier module, a DC power supply module, and a communication module. The rectifier module provides a first DC voltage to the DC power supply module. The DC power supply module includes a DC-DC converter; the fifth terminal of the DC-DC converter is connected to the first DC voltage, and the sixth terminal of the DC-DC converter is connected to the communication module, used to convert the first DC voltage into a third DC voltage to power the communication module. Through this configuration, the smart meter of this application has lower heat loss and higher conversion efficiency, thereby effectively reducing the power consumption of the smart meter.

The application discloses a kind of main control board for picosecond laser treatment system, including STM32 single-chip microcomputer and RS232 serial communication touch screen control circuit module, RS232 serial communication laser output control and state monitoring circuit module, opto-coupler isolated IO input circuit module, opto-coupler isolated IO output circuit module, analog voltage input circuit module, TFT card and USB data storage module, DAC circuit module, galvanometer control circuit module and network communication circuit module, the STM32 mainboard is driven by above-mentioned each functional circuit module to the peripheral equipment of corresponding electric control system.The application also discloses 755nm picosecond laser treatment electric control system.The application has big data function and network communication function, has AI auxiliary operation, internet of things system, teaching video function.Greatly improve the treatment effect, safety, reliability, effectiveness of product, reduce product cost, use difficulty, failure rate, maintenance rate and maintenance cost.

The utility model relates to the field of multilayer flow guide structure for air cooling laser device, concretely relates to a multilayer flow guide structure for air cooling laser device, including the shell body, the inner wall fixedly connected with mounting bracket of shell body, the upper surface of mounting bracket is installed with circuit board, the inner wall fixedly connected with laser generator of mounting bracket, the inner wall of shell body is provided with closed blowing assembly, multilayer flow guide assembly, multilayer flow guide assembly is used for connecting to place mounting bracket, multilayer flow guide assembly includes base. Through the forward and reverse operation of fan in closed blowing assembly, the airflow path switching of working state and standby state is realized, the stable closed air duct that forms the arc surface of the adhesion base is formed when working, guarantees the efficient heat dissipation of high power operation, the reverse airflow can satisfy the low power consumption heat dissipation demand to avoid heat accumulation when standby, can also remove internal dust, solved the problem that the existing direct current type flow guide structure cannot adapt to different heat dissipation demand.