Pub Date : 1991-09-15DOI: 10.1299/JSMEC1988.34.433
T. Fujino
{"title":"Inverse Transfer Function Compensation for NC Control","authors":"T. Fujino","doi":"10.1299/JSMEC1988.34.433","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.433","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129941018","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 : 1991-09-15DOI: 10.1299/JSMEC1988.34.362
Y. Khulief
A method for deriving the constrained form of Lagrangian equations of motion for an interconnected system of rigid bodies using bond graphs is presented. Intrinsically, this approach allows the formulation of the final form of equations for holonomic systems without recourse to the Lagrangian function. Consequently, the burdens of deriving the expressions for kinetic and potential energies, and performing the necessary differentiations have been eliminated. This method calls only for constructing the Jacobian matrix of constraints, and then employing a bond graph that accounts for the generalized constraint reaction forces.
{"title":"Constrained Lagrangian Formulation for Multibody Systems using Bond Graphs","authors":"Y. Khulief","doi":"10.1299/JSMEC1988.34.362","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.362","url":null,"abstract":"A method for deriving the constrained form of Lagrangian equations of motion for an interconnected system of rigid bodies using bond graphs is presented. Intrinsically, this approach allows the formulation of the final form of equations for holonomic systems without recourse to the Lagrangian function. Consequently, the burdens of deriving the expressions for kinetic and potential energies, and performing the necessary differentiations have been eliminated. This method calls only for constructing the Jacobian matrix of constraints, and then employing a bond graph that accounts for the generalized constraint reaction forces.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130666416","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 : 1991-09-15DOI: 10.1299/JSMEC1988.34.419
A. Yoshida, Y. Ohue, Mitsunori Saitoh, I. Karasuno
{"title":"A Study on Surface Durability of Induction-Hardened Sintered Powder Metal Rollers : Influences of Powder Type, Sign of Specific Sliding and Relative Radius of Curvature","authors":"A. Yoshida, Y. Ohue, Mitsunori Saitoh, I. Karasuno","doi":"10.1299/JSMEC1988.34.419","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.419","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"139 26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129507171","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 : 1991-09-15DOI: 10.1299/JSMEC1988.34.345
Masumi Kataoka, S. Ohno, Takanao Sugimoto
The engine-clutch-gearbox train of an automobile is modeled by a forced torsional vibration system including two nonlinear terms, namely a clearance and a two-step-hardening spring. Analytical solutions of the equations of motion of the system are obtained in recurrent form. Based on the solutions, the effect of the torsional stiffness of the clutch disk on the idle rattle of the gearbox is investigated. The results are as follows : (1) The sum of torque impulses per cycle of the forced motion increases with the increase in the ratio of the second-step stiffness to the first-step stiffness. Therefore, there is an upper limit to the second-step stiffness for the purpose of the prevention of idle rattle. (2) Both the sum of torque impulses and the number of collisions decrease with the increase in the range of torsional displacement covered by the first-step stiffness.
{"title":"Forced torsional vibration of a two-degree-of-freedom system including a clearance and a two-step-hardening spring","authors":"Masumi Kataoka, S. Ohno, Takanao Sugimoto","doi":"10.1299/JSMEC1988.34.345","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.345","url":null,"abstract":"The engine-clutch-gearbox train of an automobile is modeled by a forced torsional vibration system including two nonlinear terms, namely a clearance and a two-step-hardening spring. Analytical solutions of the equations of motion of the system are obtained in recurrent form. Based on the solutions, the effect of the torsional stiffness of the clutch disk on the idle rattle of the gearbox is investigated. The results are as follows : (1) The sum of torque impulses per cycle of the forced motion increases with the increase in the ratio of the second-step stiffness to the first-step stiffness. Therefore, there is an upper limit to the second-step stiffness for the purpose of the prevention of idle rattle. (2) Both the sum of torque impulses and the number of collisions decrease with the increase in the range of torsional displacement covered by the first-step stiffness.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122538791","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 : 1991-09-15DOI: 10.1299/JSMEC1988.34.388
Jun Wu, K. Yoshimoto
{"title":"A Study on the Speeding Up of the Motion of a Flexible Robot Arm","authors":"Jun Wu, K. Yoshimoto","doi":"10.1299/JSMEC1988.34.388","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.388","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114069517","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 : 1991-09-15DOI: 10.1299/JSMEC1988.34.333
H. Yabe, H. Ishida
{"title":"A Study on the Running Accuracy of an Externally Pressurized Gas Thrust Bearing : Rotor Run-Out Characteristics","authors":"H. Yabe, H. Ishida","doi":"10.1299/JSMEC1988.34.333","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.333","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130353404","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 : 1991-06-15DOI: 10.1299/JSMEC1988.34.265
K. Mitome
Design of nonintersecting-nonparallel-axis conical involute gears is established. As a result, any conical involute gears which transmit rotational motion between two nonintersecting-nonparallel-axis shafts can be readily designed and made. This design is composed of two methods. One is a method to determine mounting dimensions when the basic dimensions of a pair of gears are given first. The other is a method to determine the basic dimensions of a pair of gears when the mounting dimensions are given first. The test gears are designed and made for trial; tooth bearing tests are performed, and it is proven that this design has the applicablity.
{"title":"Conical involute gear. (Design of nonintersecting-nonparallel-axis conical involute gear)","authors":"K. Mitome","doi":"10.1299/JSMEC1988.34.265","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.265","url":null,"abstract":"Design of nonintersecting-nonparallel-axis conical involute gears is established. As a result, any conical involute gears which transmit rotational motion between two nonintersecting-nonparallel-axis shafts can be readily designed and made. This design is composed of two methods. One is a method to determine mounting dimensions when the basic dimensions of a pair of gears are given first. The other is a method to determine the basic dimensions of a pair of gears when the mounting dimensions are given first. The test gears are designed and made for trial; tooth bearing tests are performed, and it is proven that this design has the applicablity.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121199564","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 : 1991-06-15DOI: 10.1299/JSMEC1988.34.252
A. Kubo, T. Kuboki, T. Nonaka
The correlation between the transmission error of gears and some factors which are usually considered to express characteristics of a tooth contact pattern, such as areal percentage and total length of simultaneous contact lines, is examined, but very poor correlation is found. A new method of estimating the transmission error from a tooth contact pattern is introduced. This is a method of supposing a triangular shape for the composite error on the actual contact line, which results in the ridge figure of the composite error surface as a function of the tooth contact pattern. The transmission error is derived as a function of this ridge figure. The results estimated by this method showed fairly good correlation with the actual transmission error, especially for a low transmitting load. Based on this method, an index value to estimate the amplitude of transmission error of a gear pair by the observation of tooth contact pattern is also introduced.
{"title":"Estimation of Transmission Error of Cylindrical Involute Gears by Tooth Contact Pattern.","authors":"A. Kubo, T. Kuboki, T. Nonaka","doi":"10.1299/JSMEC1988.34.252","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.252","url":null,"abstract":"The correlation between the transmission error of gears and some factors which are usually considered to express characteristics of a tooth contact pattern, such as areal percentage and total length of simultaneous contact lines, is examined, but very poor correlation is found. A new method of estimating the transmission error from a tooth contact pattern is introduced. This is a method of supposing a triangular shape for the composite error on the actual contact line, which results in the ridge figure of the composite error surface as a function of the tooth contact pattern. The transmission error is derived as a function of this ridge figure. The results estimated by this method showed fairly good correlation with the actual transmission error, especially for a low transmitting load. Based on this method, an index value to estimate the amplitude of transmission error of a gear pair by the observation of tooth contact pattern is also introduced.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115697375","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 : 1991-06-15DOI: 10.1299/JSMEC1988.34.245
N. Tsukamoto, H. Maruyama, T. Ikuta
In their previous study, the authors demonstrated that noise can be greatly reduced by using gears which are made of plastic material (called P-nylon) consisting of nylon filled with a plasticizer. In apparatus such as acoustic equipment, gears suffer only a slight torque and their teeth need not be high in strength. Currently, the development of gears with low noise is in demand in this field. In the present study, gears are produced using a polyamide elastomer which is softer than P-nylon and harder than rubber, and tests are carried out to determine their noise reduction effect, the wear of their teeth and their operation life. The practical performance of these gears is studied based on the test results
{"title":"Development of Low-Noise Gears : Silencing Effect and Operating Characteristics of Polyamide Elastomer Gears","authors":"N. Tsukamoto, H. Maruyama, T. Ikuta","doi":"10.1299/JSMEC1988.34.245","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.245","url":null,"abstract":"In their previous study, the authors demonstrated that noise can be greatly reduced by using gears which are made of plastic material (called P-nylon) consisting of nylon filled with a plasticizer. In apparatus such as acoustic equipment, gears suffer only a slight torque and their teeth need not be high in strength. Currently, the development of gears with low noise is in demand in this field. In the present study, gears are produced using a polyamide elastomer which is softer than P-nylon and harder than rubber, and tests are carried out to determine their noise reduction effect, the wear of their teeth and their operation life. The practical performance of these gears is studied based on the test results","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125646235","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 : 1991-06-15DOI: 10.1299/JSMEC1988.34.227
T. Yoshimura, A. Nagamatsu
Modal analysis is widespread and many curve-fit techniques which estimate modal parameters such as natural frequencies, modal damping ratios and natural modes have been developed. A new method based on the maximum likelihood principle which utilizes the frequency response function (FRF) as input data has been proposed by one of the authors. According to that method, it is necessary to estimate not only FRF itself, but also the variance of the FRF by a vibration test. Following the previous report, this paper presents a method of estimating FRF's variance for the "Hv" estimator in the case of multipoint excitation. Furthermore, an approximate estimation method of the Hv's variance is presented aiming at the convenience of calculation. Errors of modal parameters estimated by the maximum likelihood method are also evaluated in the form of standard deviation.
{"title":"Estimation of Variance of the Frequency Response Function and its Application to the Curve Fit","authors":"T. Yoshimura, A. Nagamatsu","doi":"10.1299/JSMEC1988.34.227","DOIUrl":"https://doi.org/10.1299/JSMEC1988.34.227","url":null,"abstract":"Modal analysis is widespread and many curve-fit techniques which estimate modal parameters such as natural frequencies, modal damping ratios and natural modes have been developed. A new method based on the maximum likelihood principle which utilizes the frequency response function (FRF) as input data has been proposed by one of the authors. According to that method, it is necessary to estimate not only FRF itself, but also the variance of the FRF by a vibration test. Following the previous report, this paper presents a method of estimating FRF's variance for the \"Hv\" estimator in the case of multipoint excitation. Furthermore, an approximate estimation method of the Hv's variance is presented aiming at the convenience of calculation. Errors of modal parameters estimated by the maximum likelihood method are also evaluated in the form of standard deviation.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"310 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121172666","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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