49 results about "Taguchi methods" patented technology

A method of determining efficiently parameters in chemical-mechanical polishing, especially a method includes a Neural-Taguchi method to seek the best parameter set to increase the quantity of output. This invention involves a time parameter to achieve end-point detection on line during the CMP procedure and also completes a maximum material removal rate (MRR) and a minimum within wafer non-uniformity (WIWNU) at the same time.

A method of building a set of experimental prediction model that requires fewer experimental frequency, shorter prediction time and higher prediction accuracy by using the advantages of combining the experimental data of Taguchi method and neural network learning is disclosed. The error between the experimentally measured result of photolithography and the simulated result of the theoretical model of near field photolithography is set as an objective function of an inverse method for back calculating fiber probe aperture size, which is adopted in the following Taguchi experiment. The analytical result of Taguchi neural network model of the present invention proves that the Taguchi neural network model can provide more accurate prediction result than the conventional Taguchi network model, and at the same time, improve the demerit of requiring massive training examples of the conventional neural network.

The invention provides a mechanical wearing part performance assessment and prediction method based on based on EMD (empirical mode decomposition)-SVD (singular value decomposition) and an MTS (Mahalanobis-Taguchi system), and belongs to the technical field of mechanical wearing part fault diagnosis. The method comprises: first of all, performing noise reduction processing on acquired signals of a monitored object, then performing EMD on the signals, selecting effective IMF (intrinsic mode function) components and residual functions to form an initial matrix, performing SVD on the initial matrix, and performing normalization processing on obtained characteristic values to obtain characteristic vectors; then using an MTS method to calculate an MD (Mahalanobis Distance), and using a Taguchi method to perform optimization and reduction on the characteristic vectors; and converting the MD into a confidence value, performing assessment on the performance of mechanical wearing parts through tracking the trend of the confidence value, and performing prediction on a fault through a correlation module or a matching matrix between the confidence value and conditions of the monitored object. The method provided by the invention avoids the problem of easily occurring errors when a conventional method is used for processing non-linear non-stationary signals, and reduces fault generation probability, thereby being suitable for industrial real-time monitoring.

Robust design method for a textile-manufacturing-dedicated multiphase asynchronous motor, including the steps: designing a motor with design variables for a high-efficient, energy-saving, multiphase asynchronous motor; selecting a number of controllable variables and their level values to build an inner orthogonal table; selecting a number of noise factors and their level values to build an outer orthogonal table; using a Taguchi method, determining the optimal combination of level values of the controllable variables and corresponding values ranges for a tolerance design, resulting in an optimal design scheme; producing technical drawings for each parts of the motor according to the optimal design scheme and producing a physical motor; comparing the performance of the physical motor with the predetermined performance target and repeating the above steps as many times as necessary until the performance target is met and the motor achieves the optimal balance between the quality and cost.

The invention discloses a reclaiming method of reclaimed rubber and a manufacturing method of rubber rain shoes by using reclaimed rubber. The reclaiming of the reclaimed rubber comprises the following steps of: (a) designing a reclaiming process by adopting a taguchi method; (b) sorting and primarily processing raw materials; (c) cutting rubber; (d) crushing waste and old rubber at a low temperature; (e) treating after crushing; (f) desulfurizing by a microwave method; and (g) processing and treating the reclaimed rubber. Simultaneously, the reclaimed rubber prepared by the reclaimed method is used to produce the rubber rain shoes by the following steps of: (a) designing a production process by adopting the taguchi method; (b) weighing and clearing the raw materials; (c) mixing the raw materials; (d) sulfurizing the rubber; (e) pressing and forming soles; (f) pressing and forming uppers; and (g) bonding and forming. The reclaiming method disclosed by the invention has the advantages that the reclaimed rubber is adopted for replacing the traditional natural rubber and synthetic rubber, and therefore the manufacturing cost of a product is reduced and the considerable economic benefit is brought; the non-reclaimed resources can be reclaimed, so that the environmental pollution is avoided, the energy-saving and environmental-friendly effects are achieved, and the production of the rain shoes steps into economic circle with good circulation.

An optimum design method of a heat sink based on the Taguchi method comprises selecting controllable factors and a noise factor; designing an experimental program; performing experiment; analyzing an experimental result; executing the Taguchi method on the experimental result; and finally determining the optimum design by the experiment. The invention adopts simulation combined with Taguchi parameter design, carries out experimental design on relevant parameters of the heat sink, then simulates the heat dissipation effect (power device housing temperature) and heat sink quality by means of simulation method, and analyzes the simulation result, to thereby optimize heat sink parameters and research optimum combination of heat sink parameters. The method has practical value in the technical field of avionic product reliability engineering.