86results about How to "Easy to implement online" patented technology

The present invention provides method and device for protecting silicon wafer edge, wherein the method comprises the following steps: placing a protection ring on a working bench by a device for protecting silicon wafer; protecting the silicon wafer edge by the protection ring during exposure of the silicon wafer; performing said flows again after replacing a new silicon wafer, wherein the centre of the protection ring is a hollow part, and the edge thereof is an entity part; the protection ring prevents the silicon wafer edge from exposing during exposure. The method for protecting silicon wafer edge comprises a position adjusting mechanism, a Z-direction lifting gear, three eccentric linkage overload protection cam-reciprocating pneumatic swing-cylinder connecting rod mechanisms, a blowing mechanism, a detection mechanism, a speed control module, and a pneumatic control module. In the method and device for protecting silicon wafer edge of the present invention, the method is that negative glue exposure and the edge protection are performed synchronously; when the silicon wafer is exposed, the silicon wafer edge is protected without a second process for processing the silicon wafer edge; the processes are reduced, and working efficiency is improved.

The invention relates to an online identification and visualization method for power grid disturbances based on multi-resolution wavelet analysis, which belongs to the technical field of wide-area dynamic monitoring and visualization of power systems. The method comprises the following steps: carrying out offline simulation analysis on the features of typical dynamic disturbance accidents in power grid, and selecting a wavelet function Psi and the decomposition layer-number I corresponding to the obtained maximum wavelet coefficient energy as online wavelet multi-resolution analysis tools; carrying out regionalization according to the PMU (power management unit) configuration situation of a target power grid, so that each region has one and only one PMU substation for measurement, and transmitting frequency signals measured by each PMU substation to a WAMS (wide area measurement system) master station; acquiring frequency signals of each PMU substation from the WAMS master station, and carrying out I-layer online wavelet multi-resolution analysis on the frequency signals by using the determined wavelet function so as to obtain wavelet coefficients of an I(th) layer; and discriminating disturbance occurrence time, disturbance occurrence potion and disturbance type according to the wavelet coefficients; and carrying out visualized display through taking a map as the background. The method disclosed by the invention can improve the running reliability of an electrical power grid.

The invention discloses a planar profile track disturbance-rejection tracking control method. According to the method, a planar profile track tracking control state space disturbance mathematics model is taken as a base, integration variables of a tracking position signal are introduced to establish a state space disturbance expansion mathematics model, a controller gain matrix is calculated through a Malab function place, a state feedback disturbance-rejection tracking controller is designed, input voltages of X-axis and Y-axis motors of a numerically-controlled machine tool are calculated, and high-speed high-precision disturbance-rejection tracking control on planar profile track position functions sX and sY is realized through the numerically-controlled machine tool. The method is advantaged in that the profile track controller is designed by directly employing the dual-axis tracking control state space disturbance mathematics model, and synchronous coordination tracking control of the two main shaft motors is realized; the tracking controller only has two adjustment parameters, and on-line construction is simple and reliable.

The invention discloses a method and device for air-fuel ratio tracking control over a hay mower gasoline engine. Based on a hay mower gasoline engine air-fuel ratio dynamic disturbance mathematic model, the variable of integration of air-fuel ratio tracking deviation signals is adopted, and an air-fuel ratio disturbance expansion mathematic model is formed; combined with a state feedback controller and the pole assignment technology, a controller of air-fuel ratio tracking object set values is designed. The method and device have the advantages that within a wide range of rotation speed and air inlet temperature changing of the gasoline engine, precise tracking control over the engine air-fuel ratio can be achieved, the air-fuel ratio is kept at the theoretical target value as far as possible in steady and transient operation of the gasoline engine, the fuel efficiency is improved, emission of CO, NOX and other harmful gases is reduced, and the control level over operation of the gasoline engine system is greatly improved.

The invention relates to a method for online quantitative-diagnosing a battery micro-short-circuit fault. The method comprises the following steps: pre-establishing a relation table of electric quantity and a charging-discharging voltage, and storing; in an online diagnostic process, performing table lookup or interpolation in the relation table on the voltage while the charge / discharge is over, to obtain the electric quantity of a battery while the charge / discharge is over, thereby estimating a micro-short-circuit current according to the change of the electric quantity along with the time, and judging whether a micro-short-circuit is existent and the severity degree according to the size of the micro-short-circuit current. In allusion to end conditions of a battery pack, such as fully charged, fully discharged, non-fully charged, and non-fully discharged, corresponding diagnostic methods are provided for forming an all-around diagnosis framework. In order to solve problems that the battery is aged and the diagnosis accuracy degree and the calculation precision of the micro-short-circuit current can be affected because the environment temperatures in the different times of the charging and discharging are different, a compensated solution scheme is implemented. The method for the micro-short-circuit current is capable of detecting the micro-short-circuit fault in advance, andoutputting the size of the micro-short-circuit current so as to estimate the severity degree of the fault, and providing the basis for measures, such as warning or answering.

The invention discloses an online dynamic forecast method for polypropylene fusion index. The method comprises the steps of starting a prepared fusion index online forecast program through clicking a button on an industrial control computer configuration interface, and, based on a dynamic forecast mathematical model for the whole flow process polypropylene fusion index and in combination with the fading memory augmentation least square method, realizing the online forecast of the polypropylene fusion index. The most important characteristic of the method is that in the state of continuous production of a polymerisation device by online measurement and calculation of the input flow-rate ratio of hydrogen and propylene and polymerization temperature, the fusion index of polypropylene resin can be online forecasted in a very wide range, so the method has the advantages of being simple and effective, easy to implement and low in cost. Through use of the method, detection frequency and efficiency of critical quality of polypropylene are greatly improved, discharging of unqualified products can be reduced and production and economic efficiency and market competitiveness can be increased.