Pub Date : 1992-06-15DOI: 10.1299/JSMEC1988.35.223
H. Matsuhisa, Baosheng Ren, Susumu Satō
A system to attenuate the sound or pulsating pressure in a duct which has a noise source with a variable exciting frequency, such as a compressor or a fan, is investigated. This system consists of a Helmholtz resonator whose cavity volume is automatically controlled by a personal computer such that the system retains the antiresonance. The steady-state and transient responses are investigated theoretically. The experiments are also carried out by making use of the harmonic sound radiated from a speaker and a pulsating flow caused by a centrifugal fan. In this autoadjusting system, the volume of the resonator cavity is controlled by making use of the fact that the phase difference between the pressure in the duct and that in the cavity changes 180degrees at the antiresonance. The sound can be reduced significantly, especially in the vicinity of the resonance frequency. When the tracking for the change of exciting frequency has a delay, the system may pass through the resonance point.
{"title":"Semiactive Control of Duct Noise by a Volume-Variable Resonator","authors":"H. Matsuhisa, Baosheng Ren, Susumu Satō","doi":"10.1299/JSMEC1988.35.223","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.223","url":null,"abstract":"A system to attenuate the sound or pulsating pressure in a duct which has a noise source with a variable exciting frequency, such as a compressor or a fan, is investigated. This system consists of a Helmholtz resonator whose cavity volume is automatically controlled by a personal computer such that the system retains the antiresonance. The steady-state and transient responses are investigated theoretically. The experiments are also carried out by making use of the harmonic sound radiated from a speaker and a pulsating flow caused by a centrifugal fan. In this autoadjusting system, the volume of the resonator cavity is controlled by making use of the fact that the phase difference between the pressure in the duct and that in the cavity changes 180degrees at the antiresonance. The sound can be reduced significantly, especially in the vicinity of the resonance frequency. When the tracking for the change of exciting frequency has a delay, the system may pass through the resonance point.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133807040","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.252
Zhi-Xin Peng, N. Adachi
In this paper, position and force control of constrained motion of robotic manipulators is discussed. First, issues related to decoupling position and force-controlled directions are discussed. The fundamentals of estimation of contact forces without using force or torque sensors are then presented, and a control scheme for position and force control of robotic manipulators without force sensing is proposed. The extension of this scheme to redundant manipulators is also discussed. Finally, the proposed control scheme is implemented on a 3-DOF planar redundant manipulator, and some experimental results are presented to illustrate the validity of the control scheme.
{"title":"Position and Force Control of Manipulators without Using Force Sensors.","authors":"Zhi-Xin Peng, N. Adachi","doi":"10.1299/JSMEC1988.35.252","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.252","url":null,"abstract":"In this paper, position and force control of constrained motion of robotic manipulators is discussed. First, issues related to decoupling position and force-controlled directions are discussed. The fundamentals of estimation of contact forces without using force or torque sensors are then presented, and a control scheme for position and force control of robotic manipulators without force sensing is proposed. The extension of this scheme to redundant manipulators is also discussed. Finally, the proposed control scheme is implemented on a 3-DOF planar redundant manipulator, and some experimental results are presented to illustrate the validity of the control scheme.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132092169","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.294
Ryohei Kokawa, Hisayoshi Sato, M. Ohori
{"title":"Measurement of Aspherical Form of Lens by Scanning Electron Microscope.","authors":"Ryohei Kokawa, Hisayoshi Sato, M. Ohori","doi":"10.1299/JSMEC1988.35.294","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.294","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133996845","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.274
Wei Huang, Y. Zou
{"title":"The dynamic response of an elastic circular plate on a viscoelastic Winkler foundation impacted by a moving rigid body","authors":"Wei Huang, Y. Zou","doi":"10.1299/JSMEC1988.35.274","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.274","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128323569","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.229
I. Hagiwara, Zheng-Dong Ma
Sensitivity analysis methods applicable to the eigenmodes and frequency responses of coupled acoustic-structural systems are proposed for the purpose of reducing vehicle interior noise. The concept of the left and right eigenvectors is introduced for treating coupled acoustic-structural problems, and four propositions concerning this concept are presented and proven. Based on these propositions, formulations are derived for conducting modal sensitivity and modal frequency response sensitivity analyses. The theoretical results and computation equations are verified through the application of the methods to a coupled acoustic-box structure and a practical vehicle interior noise problem.
{"title":"Development of eigenmode and frequency response sensitivity analysis methods for coupled acoustic-structural systems","authors":"I. Hagiwara, Zheng-Dong Ma","doi":"10.1299/JSMEC1988.35.229","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.229","url":null,"abstract":"Sensitivity analysis methods applicable to the eigenmodes and frequency responses of coupled acoustic-structural systems are proposed for the purpose of reducing vehicle interior noise. The concept of the left and right eigenvectors is introduced for treating coupled acoustic-structural problems, and four propositions concerning this concept are presented and proven. Based on these propositions, formulations are derived for conducting modal sensitivity and modal frequency response sensitivity analyses. The theoretical results and computation equations are verified through the application of the methods to a coupled acoustic-box structure and a practical vehicle interior noise problem.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131781934","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.259
Y. Tsuda, H. Tamura, A. Sueoka, T. Fujii
This paper investigates the behaviour of a nonlinear vibrating system, i. e., van der Pol and Duffing's system, with a retarded argument under a harmonic stimulating force. An approximate analytical method, i.e., the averaging scheme, is used to analyse subharmonic oscillations of the order 1/2. The algorithm used to study periodic solutions and their stabilities with higher-order approximations, is presented. A computer simulation is used to obtain Poincare mapping and invariant manifolds. Through the application of the approximate analytical procedure presented here and numerical simulation, both symmetrical and unsymmetrical subharmonic solutions are observed in addition to period-doubling bifurcations and chaotic behaviour. In addition, one of the Lyapunov exponents, which is positive, has verified that the vibrating system possesses chaotic phenomena.
本文研究了一类非线性振动系统，即van der Pol和Duffing系统，在谐波激励作用下的滞动特性。一种近似解析方法，即平均格式，被用来分析1/2阶的次谐波振荡。给出了用高阶逼近研究周期解及其稳定性的算法。用计算机模拟得到了庞加莱映射和不变流形。通过近似解析过程的应用和数值模拟，我们观察到了对称和非对称的次谐波解，以及倍周期分岔和混沌行为。另外，其中一个Lyapunov指数为正，证实了振动系统具有混沌现象。
{"title":"Chaotic Behaviour of a Nonlinear Vibrating System with a Retarded Argument","authors":"Y. Tsuda, H. Tamura, A. Sueoka, T. Fujii","doi":"10.1299/JSMEC1988.35.259","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.259","url":null,"abstract":"This paper investigates the behaviour of a nonlinear vibrating system, i. e., van der Pol and Duffing's system, with a retarded argument under a harmonic stimulating force. An approximate analytical method, i.e., the averaging scheme, is used to analyse subharmonic oscillations of the order 1/2. The algorithm used to study periodic solutions and their stabilities with higher-order approximations, is presented. A computer simulation is used to obtain Poincare mapping and invariant manifolds. Through the application of the approximate analytical procedure presented here and numerical simulation, both symmetrical and unsymmetrical subharmonic solutions are observed in addition to period-doubling bifurcations and chaotic behaviour. In addition, one of the Lyapunov exponents, which is positive, has verified that the vibrating system possesses chaotic phenomena.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123382318","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.214
N. Sugimoto, K. Futsuhara
{"title":"Energy for safety information transmitted in safety control system","authors":"N. Sugimoto, K. Futsuhara","doi":"10.1299/JSMEC1988.35.214","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.214","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":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130053228","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.320
T. Shioyama
{"title":"Optimal Policy for an Assembly System","authors":"T. Shioyama","doi":"10.1299/JSMEC1988.35.320","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.320","url":null,"abstract":"","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132999823","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.268
T. Yamane, H. Matsumiya, S. Kawamura, H. Mizutani, Yoshinori Nii, T. Gotanda
Vibration spectra of the experimental 15m wind turbine of the Mechanical Engineering Laboratory were obtained in field operation to clarify the vibration characteristics of general teetered-rotor wind turbines. To investigate the causes of steady vibration, step response tests were also conducted, where excitations were made with the disk brake located at the high-speed shaft. As a result, a Campbell diagram for the system has been established. The tower-bending resonance with one-per-rev and two-per-rev excitations of the rotor, as well as the transmission-torsion resonance with two-per-rev excitation, has been observed. It has also been found that the one-per-rev gravitational force is predominant for the blade chordwise bending and that various n-per-rev components due to wind speed variation can be seen on the blade flapwise bending.
{"title":"Vibration Characteristics of an Experimental Wind Turbine with a 15 m Teetered Rotor","authors":"T. Yamane, H. Matsumiya, S. Kawamura, H. Mizutani, Yoshinori Nii, T. Gotanda","doi":"10.1299/JSMEC1988.35.268","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.268","url":null,"abstract":"Vibration spectra of the experimental 15m wind turbine of the Mechanical Engineering Laboratory were obtained in field operation to clarify the vibration characteristics of general teetered-rotor wind turbines. To investigate the causes of steady vibration, step response tests were also conducted, where excitations were made with the disk brake located at the high-speed shaft. As a result, a Campbell diagram for the system has been established. The tower-bending resonance with one-per-rev and two-per-rev excitations of the rotor, as well as the transmission-torsion resonance with two-per-rev excitation, has been observed. It has also been found that the one-per-rev gravitational force is predominant for the blade chordwise bending and that various n-per-rev components due to wind speed variation can be seen on the blade flapwise bending.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117041166","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 : 1992-06-15DOI: 10.1299/JSMEC1988.35.193
T. Fukuda, O. Hasegawa
Thus far, the pattern-matching method has mainly been adopted for visual recognition, applicable only to objects which can be put into patterns. Objects which have individually variable sizes are difticult to process with satisfactory results. For example, superconductive products are difficult to put into patterns because of their expansion, shrinking and cracking in the baking process. This is one of the reasons why the development of these kinds of objects still cannot be automated. To solve this problem, especially for automatic manipulation of these kinds of products, this paper proposes an image processing system including the six-surface-image integrating-method. Avoiding individual differences, the system can perform the reasoning and recognition of bending, twisting and cracks of a brick-shaped object through integrating the image information of its six surfaces. The effectiveness of the system proposed in this paper was confirmed by the results of experiments.
{"title":"3-D image recognition for distorted and cracked objects: a proposal of six-surface-image integrating method","authors":"T. Fukuda, O. Hasegawa","doi":"10.1299/JSMEC1988.35.193","DOIUrl":"https://doi.org/10.1299/JSMEC1988.35.193","url":null,"abstract":"Thus far, the pattern-matching method has mainly been adopted for visual recognition, applicable only to objects which can be put into patterns. Objects which have individually variable sizes are difticult to process with satisfactory results. For example, superconductive products are difficult to put into patterns because of their expansion, shrinking and cracking in the baking process. This is one of the reasons why the development of these kinds of objects still cannot be automated. To solve this problem, especially for automatic manipulation of these kinds of products, this paper proposes an image processing system including the six-surface-image integrating-method. Avoiding individual differences, the system can perform the reasoning and recognition of bending, twisting and cracks of a brick-shaped object through integrating the image information of its six surfaces. The effectiveness of the system proposed in this paper was confirmed by the results of experiments.","PeriodicalId":356058,"journal":{"name":"JSME international journal. Series 3, Vibration, control engineering, engineering for industry","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128643307","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：