34results about How to "Play an inhibitory effect" patented technology

The invention relates to a method for preparing an antibacterial ramie fiber, as well as an application of the antibacterial ramie fiber on paper diapers and sanitary towels. The method for preparing the antibacterial ramie fiber comprises the following steps: soaking, degumming, performing acid and alkali treatment, cooking, washing, re-cooking, screening and the like. The preparation process is simple, and the cost is saved. The antibacterial ramie fiber is applied to the paper diapers and the sanitary towels, so that the strength and the tension of the inner cores of the paper diapers and the sanitary towels is greatly improved, and the problems of inner core deformation, breakage and the like in the using process are solved; and therefore, the physical performance indexes of the paper diapers, the sanitary towels and the like are greatly improved.

The invention discloses a novel sliding mode prediction fault tolerant control method for actuator failure of a variable time delay control system. A sliding mode prediction fault tolerant control method based on whale optimization algorithm is designed for the problem of fault tolerant control of four-rotor systems with discrete time delay uncertainties. The whole-process sliding mode surface isused as a prediction model to ensure the global robustness, and a power function reference trajectory with failure compensation is designed to suppress the uncertainty and failure while reducing the influence of buffeting. In the process of rolling optimization, considering the requirement of high-precision and fast response of the optimization process, the whale optimization algorithm is adoptedto have strong optimization performance, less parameter setting, fast convergence and high precision. The novel fault tolerant control method provided by the invention is applied to robust fault tolerant control of a class of uncertain discrete systems with time-varying delays.

The invention a MEMS gyroscope zero-bias self-calibration method based on driving / detecting modal inversion, and the MEMS gyroscope zero-bias self-calibration method is capable of solving problems inthe prior art that drift of fully-symmetrical MEMS gyroscopes is caused and power-on zero-bias of a plurality of times is different. According to the MEMS gyroscope zero-bias self-calibration method,gyroscope working characteristics are taken into consideration, a gyroscope dynamic model is taken as a base, the change rules of two working modes before and after driving modal and detecting modal inversion are given, switch of the circular gyroscope between the two working mode is realized using a signal processing circuit. The difference of the detection signals at the adjacent working modes is obtained, so that MEMS circular gyroscope zero-bias self-calibration is realized at last. The MEMS gyroscope zero-bias self-calibration method is capable of extracting zero-bias signals effectively,inhibiting zero-bias drift, and increasing the precision of the MEMS circular gyroscopes.

The invention discloses a method for restraining medium surface secondary electron multiplying in a transverse magnetic electromagnetic field mode. The method includes the steps of determining the rotation frequency of the magnetic field according to a first intersection of a secondary emission yield curve, wherein the secondary emission yield curve is determined by a medium surface material; applying the magnetic field to a medium surface according to the rotation frequency of the magnetic field, wherein the medium surface is a periodic medium surface, and the magnetic field meets the requirements that magnetic force lines of the magnetic field are parallel, the rotation frequency of the magnetic field is uniform within the preset range, and the direction of the magnetic field is perpendicular to the normal electric field direction of the transverse magnetic electromagnetic field mode, parallel to the tangent electric field direction of the transverse magnetic electromagnetic field mode and parallel to the medium surface. According to the method, by means of the means of adopting the periodic medium surface and applying the magnetic field to the periodic medium surface, the method can play a certain effect on restraining the medium surface secondary electron multiplying under different electric field conditions, and the restraining effect is better while the field intensity of the electric field is improved.