Topic
Process variable
About: Process variable is a research topic. Over the lifetime, 3983 publications have been published within this topic receiving 43130 citations. The topic is also known as: process parameter.
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Patent•
10 Nov 1994TL;DR: In this article, a neural network response of the neural network forms a correction value for the approximate value delivered by the model for the process parameter to be precomputed, which is used to adaptively improve the pre-computed process parameter after the process run.
Abstract: Known methods for conducting a process in an automatically controlled system preset the system at the beginning of each process run based on at least one process parameter. The process parameter is precomputed with a model of the process which is supplied with input values. During the process the input values and the process parameter are measured and are used to adaptively improve the precomputed process parameter after the process run. The present invention simplifies and improves the precomputed value of the process parameter by supplying at least part of the input values to a neural network. The network response of the neural network forms a correction value for the approximate value delivered by the model for the process parameter to be precomputed. The network parameters of the neural network are modified after each process run to adapt the precomputed value to the actual process events.
16 citations
Patent•
19 Mar 2008
TL;DR: In this paper, a dual wavelength infrared image colorimetric temperature measuring method was used for metal powder laser rapid prototyping technology, in particular to a temperature field detecting method and the system device in the working process of the metal powder.
Abstract: The invention relates to a metal powder laser rapid prototyping technology, in particular to a temperature field detecting method and the system device in the working process of the rapid prototyping of the metal powder. The invention adopts dual wavelength infrared image colorimetric temperature measuring method, the optical filters in two wavelengths are alternately arranged in the gathering optical path at different times, the image in the fused bath from two different wavelength are continuously and orderly gathered, and the color matching calculation of the gradation of the two infrared image from different wavelength are performed, according to the relationship between the color matching value and the temperature value, the temperature value of each point of the image is acquired, the temperature value is represented by the tonal value and a gradation image is formed, the gradation image then is processed, and the shape and temperature changing trend is acquired. By adopting the invention, the temperature distribution and the changing trend of the temperature field of the fused bath can be detected in real time during the rapid prototyping process of the metal powder, and then the temperature of the work piece process parameter can be adjusted in real time.
16 citations
01 Jun 2018
TL;DR: In this article, the multi-response optimization of wire electrical discharge machining process is presented for obtaining higher cutting speed and lower surface roughness in D3 die steel using brass wire as an electrode.
Abstract: The paper presents the multi-response optimization of wire electrical discharge machining process In this work the experiment has been conducted considering the four process parameters such as pulse-on-time, pulse-off-time, servo voltage and wire tension The machining has been performed on D3 die steel using brass wire as an electrode The cutting speed and surface roughness has been considered as process response Taguchi based DOE has been adopted for design of experiment The process parameter were optimized using MOORA approach for obtaining higher cutting speed and lower surface roughness
16 citations
TL;DR: In this article, the authors explored the possibility of a novel way of integrating AFM with electro-chemical machining with the objective to enhance its efficiency and quality of finish surface, and developed solution is formed as electrochemical and centrifugal force assisted abrasive flow machining process (EC2A2FM) for various range of parameters.
16 citations
TL;DR: In this paper, a philosophy for the statistical monitoring and cause and effect analysis of a process was outlined and a well defined process hierarchy with complementing performance measures can effectively be used to detect a shift in the operation of a mineral processing plant and find the root cause of the shift.
16 citations