Patents by Inventor Pulak Bandyopadhyay
Pulak Bandyopadhyay has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9740993Abstract: A method of detecting anomalies in the service repairs data of equipment. A failure mode-symptom correlation matrix correlates failure modes to symptoms. Diagnostic trouble codes are collected for an actual repair for the equipment. The diagnostic trouble codes are provided to a diagnostic reasoner for identifying failure modes. Diagnostic assessment is applied by the diagnostic reasoner for determining the recommended repairs to perform on the equipment in response to identifying the failure modes. Each of the recommended repairs is compared with the actual repair used to repair the equipment. A mismatch is identified in response to any recommended repair not matching the actual repair. Reports are generated for displaying all of the identified mismatches. The reports are analyzed for determining repair codes having an increase in a number of anomalies. Service centers are alerted of a correct repair for the identified failure mode.Type: GrantFiled: December 4, 2009Date of Patent: August 22, 2017Assignee: GM Global Technology Operations LLCInventors: Satnam Singh, Pulak Bandyopadhyay, Calvin E. Wolf
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Publication number: 20170213222Abstract: Methods and systems are provided for automatically comparing, combining and fusing vehicle data. First data is obtained pertaining to a first plurality of vehicles. Second data is obtained pertaining to a second plurality of vehicles. One or both of the first data and the second data include abbreviated terms. The abbreviated terms are disambiguating at least in part by identifying, from a domain ontology stored in a memory, respective basewords that are associated with each of the abbreviated terms, filtering the basewords, performing a set intersection of the basewords, and calculating posterior probabilities for the basewords based at least in part on the filtering and the set intersection. The first data and the second data are combined, via a processor, based on semantic and syntactic similarity between respective data elements of the first data and the second data and the disambiguating of the abbreviated terms.Type: ApplicationFiled: April 6, 2017Publication date: July 27, 2017Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: DNYANESH RAJPATHAK, PRAKASH M. PERANANDAM, SOUMEN DE, JOHN A. CAFEO, JOSEPH A. DONNDELINGER, PULAK BANDYOPADHYAY
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Patent number: 8996235Abstract: A vehicle repair assist system for repairing a vehicle fault in a vehicle. A symptom input module is provided for entering vehicle symptom information relating to the fault. A diagnostic code module retrieves diagnostic trouble codes from the vehicle. The diagnostic trouble codes are generated in response to a fault occurrence. A knowledge-based fault module identifies potential causes of the vehicle fault based on at least one of the symptom information and diagnostic trouble codes. A repair assistant module identifies recommended repair parts and repair procedures for repairing the cause of the vehicle fault. The repair assistant module communicates with the knowledge-based fault module for obtaining a prioritized listing of the recommended repair parts and repair procedures for repairing the vehicle fault.Type: GrantFiled: November 14, 2011Date of Patent: March 31, 2015Assignee: GM Global Technology Operations LLCInventors: Satnam Singh, Steven W. Holland, Pulak Bandyopadhyay, Pattada A. Kallappa, Robert J. Casper, Jeremy Krall, Joseph M. Martinez, Brian W. Quinn
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Publication number: 20150081729Abstract: Methods and systems are provided for automatically comparing, combining and fusing vehicle data. First data is obtained pertaining to a first plurality of vehicles. Second data is obtained pertaining to a second plurality of vehicles. The first data and the second data are compared and combined based on syntactic similarity between respective data elements of the first data and the second data collected during different stages of vehicle life cycle development.Type: ApplicationFiled: September 19, 2013Publication date: March 19, 2015Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: DNYANESH RAJPATHAK, PRAKASH MOHAN M. PERANANDAM, SOUMEN DE, JOHN A. CAFEO, JOSEPH A. DONNDELINGER, PULAK BANDYOPADHYAY
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Patent number: 8849497Abstract: A method includes collecting state of health (SOH) data and usage data from a plurality of vehicles. A peer group is identified among the vehicles. A vehicle health prognosis is generated for each vehicle of the peer based on the collected SOH and usage data. The vehicles of the peer group are ranked based on the generated vehicle health prognosis and the rank is reported to an output device that is associated with each vehicle or with a user of each vehicle. If evaluation of the ranking indicates that the health prognosis of a vehicle of the peer group is improvable by modifying vehicle usage, an alert is issued to a user of that vehicle.Type: GrantFiled: March 1, 2012Date of Patent: September 30, 2014Assignee: GM Global Technology Operations LLCInventors: Yilu Zhang, Mutasim A. Salman, Xiaofeng Mao, Fan Bai, Xinyu Du, Bo Yu, Pulak Bandyopadhyay
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Patent number: 8751097Abstract: A method and system for using Equivalent Time Sampling to improve the effective sampling rate of sensor data, and using the improved-resolution data for diagnosis and control. Data samples from existing sensors are provided, where the sampling rate of the existing sensors is not sufficient to accurately characterize the parameters being measured. High-resolution data sets are reconstructed using Equivalent Time Sampling. High-resolution input data sets are used in a system model to simulate the performance of the system being measured. Results from the system model, and high-resolution output data sets from Equivalent Time Sampling, are provided to an estimator, which provides accurate estimation of measured quantities and estimation of quantities not measured. Output from the estimator is used for fault diagnosis and control of the system being measured.Type: GrantFiled: May 10, 2011Date of Patent: June 10, 2014Assignees: GM Global Technology Operations LLC, Indian Institute of Technology KharagpurInventors: Soumen De, Pattada A. Kallappa, Pulak Bandyopadhyay, Siddhartha Mukhopadhyay, Somnath Sengupta, Alok Kanti Deb
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Patent number: 8676432Abstract: A vehicle fault diagnosis and prognosis system includes a computing platform configured to receive a classifier from a remote server, the computing platform tangibly embodying computer-executable instructions for evaluating data sequences received from a vehicle control network and applying the classifier to the data sequences, wherein the classifier is configured to determine if the data sequences define a pattern that is associated with a particular fault.Type: GrantFiled: January 13, 2010Date of Patent: March 18, 2014Assignee: GM Global Technology Operations LLCInventors: Debprakash Patnaik, Pulak Bandyopadhyay, Steven W. Holland, Kootaala P. Unnikrishnan, George Paul Montgomery, Jr.
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Patent number: 8645019Abstract: A method and system for comparing and merging fault models which are derived from different data sources. Two or more fault models are first represented as bipartite weighted graphs, which define correlations between failure modes and symptoms. The nodes of the graphs are compared to find failure modes and symptoms which are the same even though the specific terminology may be different. A graph matching method is then used to compare the graphs and determine which failure mode and symptom correlations are common between them. Finally, smoothing techniques and domain expert knowledge are used to merge and update the fault models, producing an integrated fault model which can be used by onboard vehicle systems, service facilities, and others.Type: GrantFiled: December 9, 2010Date of Patent: February 4, 2014Assignee: GM Global Technology Operations LLCInventors: Satnam Singh, Steven W. Holland, Pulak Bandyopadhyay
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Publication number: 20130231826Abstract: A method includes collecting state of health (SOH) data and usage data from a plurality of vehicles. A peer group is identified among the vehicles. A vehicle health prognosis is generated for each vehicle of the peer based on the collected SOH and usage data. The vehicles of the peer group are ranked based on the generated vehicle health prognosis and the rank is reported to an output device that is associated with each vehicle or with a user of each vehicle. If evaluation of the ranking indicates that the health prognosis of a vehicle of the peer group is improvable by modifying vehicle usage, an alert is issued to a user of that vehicle.Type: ApplicationFiled: March 1, 2012Publication date: September 5, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yilu ZHANG, Mutasim A. Salman, Xiaofeng Mao, Fan Bai, Xinyu Du, Bo Yu, Pulak Bandyopadhyay
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Patent number: 8466696Abstract: A system may be used to detect corrosion between a first metal and a second metal, where the second metal is positioned adjacent to the first metal. The system may include a processor electrically coupled to each of the first and the second metals and configured to monitor a complex impedance between the first metal and the second metal, where the complex impedance may include a real component and an imaginary component. The processor may compare the real component of the complex impedance to a first threshold, compare the imaginary component of the complex impedance to a second threshold, and indicate a likelihood of corrosion if at least one of the real and imaginary components are below their respective threshold.Type: GrantFiled: March 30, 2011Date of Patent: June 18, 2013Assignee: GM Global Technology Operations LLCInventors: Asim Tewari, Deepika Sachdeva, Kiran Deshpande, Arun M. Kumar, Pulak Bandyopadhyay, Jon T. Carter
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Patent number: 8463485Abstract: A method is provided for enhancing service diagnostics utilizing service repair data of previously serviced vehicles. Service repair data of previously serviced vehicles is obtained from a memory storage device. The service data is compiled into a service diagnostic code dataset and a service labor code dataset. The service diagnostic code dataset and service labor code dataset are categorized into an electronic data table. Respective combinations are formed in the electronic data table. An aggregate count is determined for each respective combination in the electronic data table. Either of a respective diagnostic code or a respective service labor code is identified having a correlation with more than one of either service diagnostic codes or service labor codes. At least one of a service repair procedure used to repair the vehicle or a respective service diagnostic code used to identify the fault is modified in response to analyzing the respective combinations.Type: GrantFiled: November 10, 2010Date of Patent: June 11, 2013Assignee: GM Global Technology Operations LLCInventors: Mark N. Howell, Mutasim A. Salman, Xidong Tang, Yilu Zhang, Soumen De, Sugato Chakrabarty, Rahul Chougule, Pulak Bandyopadhyay, Steven W. Holland
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Publication number: 20130124032Abstract: A vehicle repair assist system for repairing a vehicle fault in a vehicle. A symptom input module is provided for entering vehicle symptom information relating to the fault. A diagnostic code module retrieves diagnostic trouble codes from the vehicle. The diagnostic trouble codes are generated in response to a fault occurrence. A knowledge-based fault module identifies potential causes of the vehicle fault based on at least one of the symptom information and diagnostic trouble codes. A repair assistant module identifies recommended repair parts and repair procedures for repairing the cause of the vehicle fault. The repair assistant module communicates with the knowledge-based fault module for obtaining a prioritized listing of the recommended repair parts and repair procedures for repairing the vehicle fault.Type: ApplicationFiled: November 14, 2011Publication date: May 16, 2013Applicants: GENERAL MOTORS LLC, GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Satnam Singh, Steven W. Holland, Pulak Bandyopadhyay, Pattada A. Kallappa, Robert J. Casper, Jeremy Krall, Joseph M. Martinez, Brian W. Quinn
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Publication number: 20120290168Abstract: A method and system for using Equivalent Time Sampling to improve the effective sampling rate of sensor data, and using the improved-resolution data for diagnosis and control. Data samples from existing sensors are provided, where the sampling rate of the existing sensors is not sufficient to accurately characterize the parameters being measured. High-resolution data sets are reconstructed using Equivalent Time Sampling. High-resolution input data sets are used in a system model to simulate the performance of the system being measured. Results from the system model, and high-resolution output data sets from Equivalent Time Sampling, are provided to an estimator, which provides accurate estimation of measured quantities and estimation of quantities not measured. Output from the estimator is used for fault diagnosis and control of the system being measured.Type: ApplicationFiled: May 10, 2011Publication date: November 15, 2012Applicants: INDIAN INSTITUTE OF TECHNOLOGY KHARAGPUR, GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Soumen De, Pattada A. Kallappa, Pulak Bandyopadhyay, Siddhartha Mukhopadhyay, Somnath Sengupta, Alok Kanti Deb
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Patent number: 8301333Abstract: Systems and methods for capturing and analyzing significant parameter data from vehicle systems whenever a diagnostic trouble code (DTC) is triggered. A multi-dimensional matrix is constructed, with vehicles, DTCs, and parameter data comprising three dimensions of the matrix. The data matrix is populated with DTC and parameter data from many different vehicles, either when vehicles are taken to a dealer for service, or via wireless data download. Time can be added as a fourth dimension of the matrix, providing an indication of whether a particular system or component is temporally degrading. When sufficient data is accumulated, the data matrix is pre-processed, features are extracted from the data, and the features are classified, using a variety of mathematical techniques. Trained classifiers are then used to diagnose the root cause of any particular fault signal, and also to provide a prognosis of system health and remaining useful life.Type: GrantFiled: March 24, 2010Date of Patent: October 30, 2012Assignee: GM Global Technology Operations LLCInventors: Satnam Singh, Rahul Chougule, Pulak Bandyopadhyay
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Publication number: 20120247975Abstract: A system may be used to detect corrosion between a first metal and a second metal, where the second metal is positioned adjacent to the first metal. The system may include a processor electrically coupled to each of the first and the second metals and configured to monitor a complex impedance between the first metal and the second metal, where the complex impedance may include a real component and an imaginary component. The processor may compare the real component of the complex impedance to a first threshold, compare the imaginary component of the complex impedance to a second threshold, and indicate a likelihood of corrosion if at least one of the real and imaginary components are below their respective threshold.Type: ApplicationFiled: March 30, 2011Publication date: October 4, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Asim Tewari, Deepika Sachdeva, Kiran Deshpande, Arun M. Kumar, Pulak Bandyopadhyay, Jon T. Carter
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Publication number: 20120151290Abstract: A method and system for comparing and merging fault models which are derived from different data sources. Two or more fault models are first represented as bipartite weighted graphs, which define correlations between failure modes and symptoms. The nodes of the graphs are compared to find failure modes and symptoms which are the same even though the specific terminology may be different. A graph matching method is then used to compare the graphs and determine which failure mode and symptom correlations are common between them. Finally, smoothing techniques and domain expert knowledge are used to merge and update the fault models, producing an integrated fault model which can be used by onboard vehicle systems, service facilities, and others.Type: ApplicationFiled: December 9, 2010Publication date: June 14, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Satnam Singh, Steven W. Holland, Pulak Bandyopadhyay
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Publication number: 20120116630Abstract: A method is provided for enhancing service diagnostics utilizing service repair data of previously serviced vehicles. Service repair data of previously serviced vehicles is obtained from a memory storage device. The service data is compiled into a service diagnostic code dataset and a service labor code dataset. The service diagnostic code dataset and service labor code dataset are categorized into an electronic data table. Respective combinations are formed in the electronic data table. An aggregate count is determined for each respective combination in the electronic data table. Either of a respective diagnostic code or a respective service labor code is identified having a correlation with more than one of either service diagnostic codes or service labor codes. At least one of a service repair procedure used to repair the vehicle or a respective service diagnostic code used to identify the fault is modified in response to analyzing the respective combinations.Type: ApplicationFiled: November 10, 2010Publication date: May 10, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Mark N. Howell, Mutasim A. Salman, Xidong Tang, Yilu Zhang, Soumen De, Sugato Chakrabarty, Rahul Chougule, Pulak Bandyopadhyay, Steven W. Holland
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Patent number: 8170743Abstract: An integrated diagnosis and prognosis system that collects vehicle information over the life of a vehicle and its development. The system provides the collected vehicle information to supplier management, product development management, service/dealership management, customer relations departments and production facilities, which use the information to take certain action for existing vehicles, fleets of vehicles or future vehicles to improve vehicle reliability and quality.Type: GrantFiled: January 29, 2009Date of Patent: May 1, 2012Assignee: GM Global Technology Operations LLCInventors: Mutasim A. Salman, Pulak Bandyopadhyay, Sugato Chakrabarty, Rahul Chougule, Sabyasachi Bhattacharya, Soumen De, Debprakash Patnaik, Andrea M. Simon, Steven W. Holland, Yuen-Kwok Chin, Xiaodong Zhang, Yilu Zhang
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Patent number: 8170861Abstract: Manufacturing facility process optimization includes monitoring communication signals within a facility device network, analyzing work station specific patterns in the communication signals, developing operational dependencies for work stations based upon the work station specific patterns, and predictively evaluating impacts to the work stations of the proposed configuration of the manufacturing facility process based upon the operational dependencies.Type: GrantFiled: July 29, 2008Date of Patent: May 1, 2012Assignee: GM Global Technology Operations LLCInventors: Robert Bruce Tilove, Pulak Bandyopadhyay, Stephan R. Biller
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Patent number: 8095261Abstract: A system and method for enhancing vehicle diagnostic and prognostic algorithms and improving vehicle maintenance practices. The method includes collecting data from vehicle components, sub-systems and systems, and storing the collected data in a database. The collected and stored data can be from multiple sources for similar vehicles or similar components and can include various types of trouble codes and labor codes as well as other information, such as operational data and physics of failure data, which are fused together. The method generates classes for different vehicle components, sub-systems and systems, and builds feature extractors for each class using data mining techniques of the data stored in the database. The method also generates classifiers that classify the features for each class. The feature extractors and feature classifiers are used to determine when a fault condition has occurred for a vehicle component, sub-system or system.Type: GrantFiled: March 5, 2009Date of Patent: January 10, 2012Assignee: GM Global Technology Operations LLCInventors: Mark N. Howell, Mutasim A. Salman, Xidong Tang, Yilu Zhang, Xiaodong Zhang, Yuen-Kwok Chin, Soumen De, Debprakash Patnaik, Sabyasachi Bhattacharya, Pulak Bandyopadhyay, Balarama V. Murty, Ansaf I. Alrabady, Rami I. Debouk, Steven W. Holland, George Paul Montgomery, Jr.