摘要:
The present disclosure describes a computer-implemented method for detecting anomalies during lot production, wherein the products within a production lot are processed according to a sequence of steps that include manufacturing steps and one or more quality control steps interspersed among the manufacturing steps, the method comprising: obtaining process quality inspection data from each of the one or more quality control steps for a first production lot; obtaining product characteristics data for the products in the first production lot after the final step in the sequence; training a Gaussian process regression model using the process quality inspection data and the product characteristics data from the first production lot; generating a predictive distribution of the product characteristics data using the Gaussian process regression model that uses a bathtub kernel function; obtaining process quality inspection data from each of the quality control steps for a second production lot; identifying anomalies in the second production lot using the predictive distribution of the product characteristics data and the process quality inspection data from the second production lot; if no anomalies are detected in the second production lot, updating the Gaussian process regression model using the process quality inspection data from the second production lot; setting target values for one or more values in the process quality inspection data based on the predictive distribution of the product characteristic; and adjusting settings of one or more manufacturing steps based on the target values.
摘要:
An abnormality symptom analyzing device comprises: a data request receiver to perform request and reception of data, required for analyzing an abnormality symptom(s), including measurement information obtained from a sensor(s) of a facility, an abnormality symptom(s) detected from the measurement information and inspection information of the facility; a data storage device to store the data acquired by the data request receiver; a coordination circuitry to perform the registration of data to display a screen display component(s) on a display device and the correspondence of data coordinated between screen display components to a screen display component(s) coordinated, and to store information modified according to input contents from an input device, whereby modification contents are coordinated to the screen display components; and a component graphics-drawing management circuitry to acquire data through the coordination circuitry, and to display details information of the facility and propagation information of an abnormality symptom(s) in signals.
摘要:
An information processing device includes: a memory; and a processor coupled to the memory and configured to: learn a classification rule that classifies an abnormal degree of a production facility from a text feature amount based on the text feature amount obtained from a number of texts included in a plurality of pieces of log data obtained in a predetermined process of the production facility and production history information of the production facility; extract a text feature amount of log data to be monitored obtained in the predetermined process of the production facility; and determine an abnormal degree of the production facility when the log data to be monitored is obtained based on the text feature amount and the classification rule.
摘要:
According to one embodiment, a manufacturing apparatus control system includes a defect rate detector, a significant difference tester and a defect determining unit. The defect rate detector extracts a first apparatus passage history having a first defect rate. The defect rate detector detects a third defect rate by excluding a second apparatus passage history having a second defect rate from the first apparatus passage history. The significant difference tester calculates a significant difference test value. The defect determining unit extracts a third apparatus passage history based on the third defect rate and the significant difference test value.
摘要:
A method and system for linking sensor data to metrology data and metrology data to sensor data is described herein. In one embodiment, a user selection of metrology data for a product is received, related process tool fault detection summary for the selected metrology data for the product is presented, a user selection of a process tool from the process tool fault detection summary is received, and related fault detection details for the selected process tool are presented.
摘要:
A menu-driven manufacturing technique includes determining a product and product configuration, along with process steps to be carried out in manufacturing workstations. Display screens corresponding to the particular manufacturing process steps are accessed and displayed on monitors at the workstations to lead operators through the processes. Control circuitry may verify that the correct components and tools are utilized as called for by the various process steps. Powered tools and test setups may be integrated with the system to enable improved quality control.
摘要:
A method for constructing a process performance prediction model for a material processing system, the method including the steps of: recording tool data for a plurality of observations during a process in a process tool, the tool data comprises a plurality of tool data parameters; recording process performance data for the plurality of observations during the process in the process tool, the process performance data comprises one or more process performance parameters; performing a partial least squares analysis using the tool data and the process performance data; and computing correlation data from the partial least squares analysis.
摘要:
A method is described for the automated determination of fault events by evaluation of field data of a production installation within a system for determining the effectiveness (overall equipment effectiveness (OEE)) of the production installation and for the analysis of causes of faults. The determination of the fault events takes place using a data processing device and programs stored in it for carrying out the functions of a fault event detector and an OEE script configurer. The OEE script configurer accesses a prescribed productivity model specific to a production installation type, generates an OEE script with likewise prescribed configuration data taken into account and stores it in an OEE script memory. The fault event detector accesses the OEE script, calls up field data from a data server, derives fault events from the field data according to processing instructions of the OEE script, and stores them in a fault database.
摘要:
The present disclosure provides a semiconductor manufacturing fault detection and management system and method for monitoring at least one manufacturing entity to detect state changes.
摘要:
Disclosed is a monitoring device for a machine tool, which monitors operations in work machining to increase the precision level of the yield of the work. To monitor a load current supplied to a machining motor in 1-cycle units which run from the start of the machining to the end of the machining, sampling points are taken at shorter intervals along the time axis of the machining in areas where the machining is complex, and in areas where the machining is simple sampling points are taken at longer intervals along the time axis of the machining; and at each sampling point the sampling data are stored and undergo numerical processing. Then, the actually measured value of the load current is compared to determine whether or not the actually measured value is within a range of an upper and a lower limit which are determined by a standard deviation value calculated from the sampling data at each sampling point, to thereby monitor the machining process. Determination as to defective/non-defective is performed at each sampling point on the basis of the range between the upper and lower limits which model the shape of the work. As a result, the probability of non-defective products being unretrieved as data is reduced and abnormalities are detected quickly at each sampling point to allow swift handling of the problem.