3results about How to "Avoid coupling effects" patented technology

This invention discloses a design method for composite material shells of deep-sea pressure-resistant devices and its application. The design method selects four key parameters: initial out-of-roundness amplitude, wall thickness deviation coefficient, hybrid fiber ratio, and difference in elastic modulus between inner and outer fibers. Combining nonlinear finite element analysis and response surface regression techniques, a quantitative prediction model of nonlinear buckling load with respect to the above parameters is established. Based on this, the buckling resistance advantages and performance-cost marginal benefit relationship of hybrid ply configuration are systematically explained from the two dimensions of structural mechanics mechanism and engineering economy.

The application discloses an active magnetic field probe circuit, device, system and electromagnetic interference detection method, wherein the circuit comprises a probe signal acquisition circuit, a full-differential amplifier link and a differential-to-single-end output circuit which are connected in sequence; the input end of the probe signal acquisition circuit is connected to the differential output end of a magnetic field probe sensor, and is used for receiving a raw voltage signal containing a differential mode signal and common mode noise generated by the sensor; the full-differential amplifier link comprises at least two stages of full-differential amplifiers which are connected in cascade; the differential input end of the differential-to-single-end output circuit is connected to the output end of the last stage of the full-differential amplifier link through a direct-current isolation capacitor, and the single-end output end of the differential-to-single-end output circuit is connected in series with an output matching resistor. The circuit of the application improves the accuracy of electromagnetic interference source positioning and the test efficiency.

The application discloses a SoC equalization control method for multiple energy storage units in parallel operation, which comprises the following steps: estimating the SoC of the i-th energy storage unit by using the ampere-hour integration method; obtaining the estimated SoC of other energy storage units through a low-bandwidth communication line, and calculating the average SoC of the n energy storage units in parallel operation; adaptively adjusting the droop coefficient by using the SoC equalization control algorithm to obtain the dynamic correction droop coefficient of the i-th energy storage unit; obtaining the reference output voltage of the converter of the i-th energy storage unit, and obtaining the reference output current of the converter of the i-th energy storage unit by using the voltage loop PI control method; obtaining the switch duty cycle of the converter of the i-th energy storage unit by using the current loop PI control method; and controlling the actions of the switches of the converters of the energy storage units through complementary pulse signals to realize the SoC equalization of the energy storage units in parallel operation. The SoC equalization control method can accurately equalize the SoCs of the energy storage units in parallel operation.