Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69716
A. Nakamura, T. Hibara, N. Yamada, S. Hori
An expert system, DIAS (display monitor intelligent adjusting system), for adjusting color display monitors is described. DIAS has an inference engine, which can express a human's knowledge using fuzzy sets and can adjust a display monitor as experienced workers do. It is shown that DIAS can achieve adjustment criteria independent of the initial conditions within three or five adjustment times.<>
{"title":"Display monitor intelligent adjusting system: DIAS","authors":"A. Nakamura, T. Hibara, N. Yamada, S. Hori","doi":"10.1109/IECON.1989.69716","DOIUrl":"https://doi.org/10.1109/IECON.1989.69716","url":null,"abstract":"An expert system, DIAS (display monitor intelligent adjusting system), for adjusting color display monitors is described. DIAS has an inference engine, which can express a human's knowledge using fuzzy sets and can adjust a display monitor as experienced workers do. It is shown that DIAS can achieve adjustment criteria independent of the initial conditions within three or five adjustment times.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121936620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69631
S. Saadate, R. Le Doeuff, R. Périot
The authors present considerations for the series connection of GTOs (gate turn-off thyristors). Criteria for the selection of GTOs, design of snubbers, and adoption of GTO control are given. The advantages and drawbacks of the strategies used are discussed. Detailed experimental results concerning the GTO commutations and the snubber circuit are presented. The influence of important parameters, such as the load current, on the transient and steady-state voltage distribution on the GTOs is discussed. As series connection of GTOs is liable to be used in the high-voltage static converters utilized in rail traction systems, two industrial realizations are considered.<>
{"title":"High voltage, chopper for electrical traction applications using series connection of large GTO thyristors","authors":"S. Saadate, R. Le Doeuff, R. Périot","doi":"10.1109/IECON.1989.69631","DOIUrl":"https://doi.org/10.1109/IECON.1989.69631","url":null,"abstract":"The authors present considerations for the series connection of GTOs (gate turn-off thyristors). Criteria for the selection of GTOs, design of snubbers, and adoption of GTO control are given. The advantages and drawbacks of the strategies used are discussed. Detailed experimental results concerning the GTO commutations and the snubber circuit are presented. The influence of important parameters, such as the load current, on the transient and steady-state voltage distribution on the GTOs is discussed. As series connection of GTOs is liable to be used in the high-voltage static converters utilized in rail traction systems, two industrial realizations are considered.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125541716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69698
R.A. Strobel
A fully automated, computer-integrated factory has been implemented. Display pagers with a lot size of one are produced utilizing a state-of-the-art computer control system. Pagers are manufactured with shorter cycle times, higher quality, lower costs, and greater inventory turns than with traditional manufacturing methods. A key to the implementation of cost-competitive domestic manufacturing is an effective CIM (computer-integrated manufacturing) strategy. The demand for a zero-setup-time, lot-size-of-one, built-to-order automated manufacturing system required an advanced CIM system. Each pager is unique, with a special set of hardware and software customized to the end user. The CIM system supporting the database driven factory allows over 21 million combinations of product to be manufactured individually, one at a time. The CIM hardware and software architectures are described.<>
{"title":"Operation Bandit-CIM from a user perspective","authors":"R.A. Strobel","doi":"10.1109/IECON.1989.69698","DOIUrl":"https://doi.org/10.1109/IECON.1989.69698","url":null,"abstract":"A fully automated, computer-integrated factory has been implemented. Display pagers with a lot size of one are produced utilizing a state-of-the-art computer control system. Pagers are manufactured with shorter cycle times, higher quality, lower costs, and greater inventory turns than with traditional manufacturing methods. A key to the implementation of cost-competitive domestic manufacturing is an effective CIM (computer-integrated manufacturing) strategy. The demand for a zero-setup-time, lot-size-of-one, built-to-order automated manufacturing system required an advanced CIM system. Each pager is unique, with a special set of hardware and software customized to the end user. The CIM system supporting the database driven factory allows over 21 million combinations of product to be manufactured individually, one at a time. The CIM hardware and software architectures are described.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125633853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69667
T. Yokoyama, K. Kosuge, K. Furuta
A continuous nonlinear control law for a robot manipulator is redesigned for digital implementation. The digital control law is derived so that the response of the digital control system is close to that of the continuous control system. The amount of computation for the redesigned control algorithm is almost the same as the amount of computation for the original nonlinear control algorithm. The redesign method provides satisfactorily stable results, even for a fairly large sampling interval. The algorithm was experimentally applied to a direct-drive arm with two degrees of freedom. Simulation and experimental results illustrate the effectiveness of the proposed redesign method.<>
{"title":"Digital redesign of robot control","authors":"T. Yokoyama, K. Kosuge, K. Furuta","doi":"10.1109/IECON.1989.69667","DOIUrl":"https://doi.org/10.1109/IECON.1989.69667","url":null,"abstract":"A continuous nonlinear control law for a robot manipulator is redesigned for digital implementation. The digital control law is derived so that the response of the digital control system is close to that of the continuous control system. The amount of computation for the redesigned control algorithm is almost the same as the amount of computation for the original nonlinear control algorithm. The redesign method provides satisfactorily stable results, even for a fairly large sampling interval. The algorithm was experimentally applied to a direct-drive arm with two degrees of freedom. Simulation and experimental results illustrate the effectiveness of the proposed redesign method.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130358329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69652
T. Umeno, Y. Hori
The authors propose a general robust servosystem design method based on the two-degrees-of-freedom (TDOF) controllers. With this approach, it is possible to specify the command input response to an arbitrary reference model while keeping a strong robustness to system variations and a high suppression performance with respect to disturbances. These can be designed independently of the command input response. The TDOF method is generalized to unstable plants, and two types of practical parameterizations for the TDOF controller are proposed in order to design the speed and position servosystems, respectively. Their excellent control performances have been confirmed by experimental results. The application of one of the proposed servocontrollers to the motion control of robotic manipulators is described.<>
{"title":"Robust DC servosystem design based on the parameterization of two degrees of freedom control systems","authors":"T. Umeno, Y. Hori","doi":"10.1109/IECON.1989.69652","DOIUrl":"https://doi.org/10.1109/IECON.1989.69652","url":null,"abstract":"The authors propose a general robust servosystem design method based on the two-degrees-of-freedom (TDOF) controllers. With this approach, it is possible to specify the command input response to an arbitrary reference model while keeping a strong robustness to system variations and a high suppression performance with respect to disturbances. These can be designed independently of the command input response. The TDOF method is generalized to unstable plants, and two types of practical parameterizations for the TDOF controller are proposed in order to design the speed and position servosystems, respectively. Their excellent control performances have been confirmed by experimental results. The application of one of the proposed servocontrollers to the motion control of robotic manipulators is described.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128812077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69640
M.R. Udayagiri, T. Lipo
The authors consider the development of a simulation model for an induction motor including both eddy current losses and hysteresis losses. Since both eddy current loss and hysteresis loss are frequency-dependent, a novel induction motor model with stator and rotor circuits expressed in different reference frames is presented to facilitate analysis. As the eddy current and hysteresis losses are ohmic, the stator and rotor eddy current losses can be represented by resistors across the stator and rotor magnetizing inductances. Necessary equations are derived to calculate the values of these resistors. Using the developed model and simulation equations, a simulation of a 250 HP squirrel cage induction motor was implemented. The proposed model is particularly suitable as a building block to generate a suitable PWM (pulse-width modulation) pattern that has minimum motor losses.<>
{"title":"Simulation of inverter fed induction motors including core losses","authors":"M.R. Udayagiri, T. Lipo","doi":"10.1109/IECON.1989.69640","DOIUrl":"https://doi.org/10.1109/IECON.1989.69640","url":null,"abstract":"The authors consider the development of a simulation model for an induction motor including both eddy current losses and hysteresis losses. Since both eddy current loss and hysteresis loss are frequency-dependent, a novel induction motor model with stator and rotor circuits expressed in different reference frames is presented to facilitate analysis. As the eddy current and hysteresis losses are ohmic, the stator and rotor eddy current losses can be represented by resistors across the stator and rotor magnetizing inductances. Necessary equations are derived to calculate the values of these resistors. Using the developed model and simulation equations, a simulation of a 250 HP squirrel cage induction motor was implemented. The proposed model is particularly suitable as a building block to generate a suitable PWM (pulse-width modulation) pattern that has minimum motor losses.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128037946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69625
A. Ujiie, S. Tanaka, E. Takahara, A. Miyazaki
The authors describe a system using PWM (pulse-width modulation) control converters and induction motors to control a load power of 1200 kW. GTO (gate turn-off) thyristors are used for a practical power circuit, and a microprocessor in combination with DSP (digital signal processing) control is used to configure the control circuit. It is shown that by switching GTO thyristors using DSP with a sample time of 32 mu s, current control can be continued without any problems when asymmetrical flux saturation occurs in the transformer. This device has been developed with a view to application in high-speed railway systems.<>
{"title":"Development of a pulse power converter with a DSP instantaneous current control","authors":"A. Ujiie, S. Tanaka, E. Takahara, A. Miyazaki","doi":"10.1109/IECON.1989.69625","DOIUrl":"https://doi.org/10.1109/IECON.1989.69625","url":null,"abstract":"The authors describe a system using PWM (pulse-width modulation) control converters and induction motors to control a load power of 1200 kW. GTO (gate turn-off) thyristors are used for a practical power circuit, and a microprocessor in combination with DSP (digital signal processing) control is used to configure the control circuit. It is shown that by switching GTO thyristors using DSP with a sample time of 32 mu s, current control can be continued without any problems when asymmetrical flux saturation occurs in the transformer. This device has been developed with a view to application in high-speed railway systems.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126400056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69708
G. D'Errico
The monitoring and control of turning operations in a metal-cutting system are examined. Tool wear sensing and metal-removing rate control are considered from a systems-theory viewpoint. Tool decay features are described along with requirements for in-process sensing devices. An adaptive control system is proposed for automatic tool replacement based on wear measurement feedback.<>
{"title":"Tool condition monitoring and machining process control","authors":"G. D'Errico","doi":"10.1109/IECON.1989.69708","DOIUrl":"https://doi.org/10.1109/IECON.1989.69708","url":null,"abstract":"The monitoring and control of turning operations in a metal-cutting system are examined. Tool wear sensing and metal-removing rate control are considered from a systems-theory viewpoint. Tool decay features are described along with requirements for in-process sensing devices. An adaptive control system is proposed for automatic tool replacement based on wear measurement feedback.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121190590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69728
S. Kishi
Numerical calculations for the simulation of natural phenomena were conducted using a data-flow-type parallel processing computer. The aim of the study was to introduce an innovative software technology to the field of natural disaster prevention. In the study, two simulation models for natural phenomena were adopted as examples: one was a geological problem involving the solution of a partial differential equation by the difference calculus to study the behavior of a wetting front in the ground caused by rain-water in time series, while the other was a seismological problem of computing multiple integrals in the calculus of variations to seek the distribution of dislocations in a fault plane as an elastic body. These examples were programmed in Fortran in the usual computer and then, according to the sequential algorithm, translated into the data-flow assembler. The computing time in the data-flow computer was approximately three-to-five times shorter than that of the usual medium-size computer of computing speed 3 MIPS (million instructions per second). Dynamic visualization of the computing process was realized using an image display directly connected to the memory of the data-flow computer.<>
{"title":"Application of data-flow computer to numerical simulation","authors":"S. Kishi","doi":"10.1109/IECON.1989.69728","DOIUrl":"https://doi.org/10.1109/IECON.1989.69728","url":null,"abstract":"Numerical calculations for the simulation of natural phenomena were conducted using a data-flow-type parallel processing computer. The aim of the study was to introduce an innovative software technology to the field of natural disaster prevention. In the study, two simulation models for natural phenomena were adopted as examples: one was a geological problem involving the solution of a partial differential equation by the difference calculus to study the behavior of a wetting front in the ground caused by rain-water in time series, while the other was a seismological problem of computing multiple integrals in the calculus of variations to seek the distribution of dislocations in a fault plane as an elastic body. These examples were programmed in Fortran in the usual computer and then, according to the sequential algorithm, translated into the data-flow assembler. The computing time in the data-flow computer was approximately three-to-five times shorter than that of the usual medium-size computer of computing speed 3 MIPS (million instructions per second). Dynamic visualization of the computing process was realized using an image display directly connected to the memory of the data-flow computer.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"667 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122546818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1989-11-06DOI: 10.1109/IECON.1989.69693
K. Yoshimura, S. Okamoto
A high-speed three-dimensional (3-D) sensor has been developed for the automatic visual inspection of soldered parts on printed circuit boards. Its advantages over existing techniques include the detection of the 3-D shape of objects with high speed and high accuracy. Using a coded fiber-optic array and a high-speed processing unit for detecting the position of the scanning light spot, the 3-D sensor is capable of obtaining 9-b range data and 7-b brightness data for 1024*1024 points within 0.85 s. An inspection system using the 3-D sensor can precisely detect the shape of solder joints and the locations of parts, and it can judge them to be good or defective.<>
{"title":"A three-dimensional sensor for automatic visual inspection of soldered parts","authors":"K. Yoshimura, S. Okamoto","doi":"10.1109/IECON.1989.69693","DOIUrl":"https://doi.org/10.1109/IECON.1989.69693","url":null,"abstract":"A high-speed three-dimensional (3-D) sensor has been developed for the automatic visual inspection of soldered parts on printed circuit boards. Its advantages over existing techniques include the detection of the 3-D shape of objects with high speed and high accuracy. Using a coded fiber-optic array and a high-speed processing unit for detecting the position of the scanning light spot, the 3-D sensor is capable of obtaining 9-b range data and 7-b brightness data for 1024*1024 points within 0.85 s. An inspection system using the 3-D sensor can precisely detect the shape of solder joints and the locations of parts, and it can judge them to be good or defective.<<ETX>>","PeriodicalId":384081,"journal":{"name":"15th Annual Conference of IEEE Industrial Electronics Society","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123368118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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