9results about How to "Reduce incentives" patented technology

This invention provides a method and system for reconstructing the full-band electrochemical impedance spectroscopy (EIS) of lithium-ion batteries. The method includes: performing distributed relaxation time (DRT) analysis on each group of battery EIS samples to obtain DRT spectra; aligning the DRT spectra on the logarithmic time constant axis and performing ensemble statistics, selecting peaks and / or valleys that stably appear under multiple operating conditions based on statistical stability, and mapping them to obtain a set of conditionally invariant characteristic frequencies; selecting characteristic frequency points that satisfy the sampling budget from the set of conditionally invariant characteristic frequencies, and performing sparse EIS measurements on the target battery at these characteristic frequency points to obtain sparse complex impedance inputs; generating a full-band complex impedance sequence based on the sparse complex impedance inputs using an autoregressive reconstruction model; and performing battery state estimation and fault diagnosis based on the full-band complex impedance sequence. This invention significantly improves the continuity of the spectral shape and the generalization ability across operating conditions under sparse sampling conditions, while reducing the full-spectrum testing time and sampling burden.

The invention discloses a zero-sequence circulating current suppression modulation method based on improved double modulation waves. The method comprises the following steps: step 1, defining a zero-sequence circulating current; 2, a common mode voltage expression is deduced; 3, a common-mode voltage difference expression is deduced; step 4, deducing a zero-sequence circulating current expression; step 5, establishing a parallel rectifier zero-sequence circulation equivalent circuit; step 6, proposing a zero-sequence circulating current suppression modulation strategy; 7, deducing a common-mode voltage difference time domain expression of a zero-sequence circulating current suppression modulation strategy; step 8, deducing a zero-sequence circulating current time domain expression; step 9, deriving a zero-sequence circulating current peak-to-peak value expression; the method is suitable for a switch-type power amplifier rectifier-stage parallel rectifier system, and achieves the effect of suppressing the zero-sequence circulating current of a multi-parallel rectifier system by increasing the frequency of the zero-sequence circulating current and reducing the excitation of the common-mode voltage difference to the zero-sequence circulating current. The zero-sequence circulating current suppression modulation strategy MDRPWM based on the improved double modulation waves can suppress the zero-sequence circulating current in a full modulation degree range, and the suppression effect is better.

The invention discloses a YIG thin film resonator based on a coplanar waveguide, which comprises a substrate, a YIG thin film, an open resonant ring, and a coplanar waveguide; the YIG thin film and the open resonant ring are arranged on the top surface of the substrate, the open resonant ring is located outside the YIG thin film and surrounds the YIG thin film; the coplanar waveguide is arranged on the bottom surface of the substrate. The resonator uses the YIG thin film to replace the existing YIG small ball, and thus does not need to adjust the crystal orientation, simplifies the circuit assembly process, reduces the assembly time, and the YIG thin film is more convenient to be installed on a flat circuit board.

The application discloses a kind of high-temperature-resistant, acid and alkali-resistant acrylic pressure-sensitive adhesive and preparation method thereof, belong to pressure-sensitive adhesive technical field.The pressure-sensitive adhesive is made of 50-80 parts by weight of acrylic ester copolymer, 5-15 parts of 10-30nm SiO2 Nanoparticle, 1-5 parts of composite dispersant, 10-30 parts of ethyl acetate, 0.5-1.5 parts of crosslinking agent and 1-4 parts of silane coupling agent KH550.The preparation is first carried out by ultrasonic dispersion with coupling agent pretreatment, then composite dispersing liquid is prepared by adding composite dispersant, then it is fused with acrylic ester copolymer, and finally the finished product is obtained by adding crosslinking agent reaction.The application solves the problem of nanoparticle agglomeration by composite dispersion system, strengthens the interface combination by using coupling agent, balances the cohesive force and adhesive force by crosslinking agent, the product is resistant to high temperature up to 180 DEG C, after acid and alkali immersion, there is little residual glue, and it retains the excellent temperature bonding performance, suitable for many high-end scenarios.

The present invention relates to the field of high-speed train vehicle equipment technology and aerodynamic noise control technology, and provides a high-speed train snowplow, including a snowplow body, the snowplow body is a flat streamlined structure, the end of the snowplow body close to the bogie cabin is the rear end, and an active jet module for adding three-dimensional disturbance to the airflow is provided, and the other end of the snowplow body is the windward surface. Compared with the prior art, the present invention has an active jet module, which can effectively add three-dimensional disturbance to the airflow through multiple jet ports, thereby reducing the excitation of the airflow on the acoustic mode inside the bogie cabin, and effectively reducing the peak value of the top of the bogie cabin, the peak value of the rear wall and the amplitude of broadband aerodynamic noise.

The invention provides a cutter driving device and a harvester, and relates to the field of cutter driving. According to the cutting knife driving device, the electromagnetic assembly and the magnet assembly are arranged in the assembling assembly, and then the cutting knife driving device is connected with the cutting knife through the assembling assembly; when power is supplied to the electromagnetic assembly, the electromagnetic assembly can generate a continuous electromagnetic field, the electromagnetic field interacts with a permanent magnetic field generated by the magnet assembly, namely traveling waves can be formed to drive the cutting knife to do reciprocating linear motion, exciting force generated by the driving mode is small, and therefore vibration excitation can be reduced; in addition, the cutting knife driving device is further provided with a vibration reduction assembly, the vibration reduction assembly specifically comprises an adjustable damping vibration reduction system, through the adjustable damping vibration reduction system, vibration (namely impact force) can be buffered, the damping can be adjusted according to the requirements of actual working conditions, and the vibration can be attenuated as quickly as possible. In this way, the service life of parts can be prolonged, and the operation comfort of the cutting knife can be guaranteed.

The application provides a BMED membrane stack device for bipolar membrane pollution monitoring, which comprises a shell, a cathode plate, an anode plate and a plurality of membrane units. The cathode plate and the anode plate are stacked in the shell along the thickness direction of the shell. The plurality of membrane units are stacked between the cathode plate and the anode plate. Each membrane unit comprises a porous separator, an ion exchange membrane, a bipolar membrane and an electrochemical impedance detection module. The ion exchange membrane and the bipolar membrane are arranged on both sides of the porous separator respectively. The electrochemical impedance detection module is arranged on the porous separator, and the detection end of the electrochemical impedance detection module is close to or contacts the measured membrane. The electrochemical impedance detection module is used for acquiring electrochemical impedance data of the measured membrane. The measured membrane is the ion exchange membrane and / or the bipolar membrane. The BMED membrane stack device further comprises an ultrasonic detection module arranged on the end plate of the shell and an optical sensing module arranged on each membrane unit. The modules are synchronously triggered by a master control unit and are additionally provided with unified time stamps, so that multi-modal in-situ data with time and space alignment are obtained.

The application discloses an image encoder excitation generation method and device, an image encoder verification method and a computer program, relates to the technical field of image testing, and comprises the following steps: determining an internal boundary state of at least one to-be-verified module in a target image encoder; wherein the internal boundary state is a working state triggered by the to-be-verified module under target input; constructing a frequency domain coefficient matrix based on the internal boundary state, and inversely solving the frequency domain coefficient matrix through inverse discrete cosine transformation to generate a spatial domain pixel block corresponding to the internal boundary state; and constructing an image excitation for verifying the target image encoder by using the spatial domain pixel block. The application can automatically generate an image excitation for triggering the internal boundary state, improves the coverage completeness of the verification excitation, reduces the redundancy of the verification excitation, and is favorable for improving the simulation resource utilization efficiency.

The application relates to the technical field of dual-motor hybrid vehicles, in particular to an engine control method and device for a dual-motor hybrid vehicle, a vehicle and a medium, wherein the method comprises the following steps: identifying a current starting stage of an engine of the dual-motor hybrid vehicle; adjusting cylinder pressure of the engine according to the current starting stage, wherein the cylinder pressure of the engine gradually increases with the increase of the current starting stage; and controlling the starting of the engine according to the cylinder pressure of the engine. Thus, the problems that, in the related art, the dual-motor hybrid vehicle is difficult to finely control the combustion cylinder pressure, the starting vibration abnormal sound is caused in the starting process of the engine, and the user experience is poor and the like are solved.