Y. Ito, Y. Murakami, K. Yonezawa, N. Nishimura, Y. Takagi, H. Morimoto, S. Sugawara, N. Donen
The new HVAC (heating, ventilation and air conditioning) system for buildings is proposed. The key technology for the system is twin coil air handling unit (AHU) and its advanced control method. One coil is equipped to cool and to dehumidify the fresh air intake, and the other coil is for cooling circulated air. The deeply chilled water is necessary only for remove the moisture from the fresh air. The latter coil requires moderately cool water according to the HVAC load. Then 2 kinds of chilled water in terms of temperature should be prepared. The structure help saving the energy consumption for air-conditioning because the higher chilled water temperature means the better chiller efficiency (COP). Next, the advanced control method that is called dasiaAir-Water cooperation systempsila is introduced. The control system mainly focused on energy savings through changing the temperature of chilled water and supply air according to the HVAC load and weather conditions. In the paper, we introduce Next generation HVAC system with its control system and evaluation results of the system for the model-building simulator.
{"title":"Next generation HVAC system","authors":"Y. Ito, Y. Murakami, K. Yonezawa, N. Nishimura, Y. Takagi, H. Morimoto, S. Sugawara, N. Donen","doi":"10.9746/JCMSI.3.193","DOIUrl":"https://doi.org/10.9746/JCMSI.3.193","url":null,"abstract":"The new HVAC (heating, ventilation and air conditioning) system for buildings is proposed. The key technology for the system is twin coil air handling unit (AHU) and its advanced control method. One coil is equipped to cool and to dehumidify the fresh air intake, and the other coil is for cooling circulated air. The deeply chilled water is necessary only for remove the moisture from the fresh air. The latter coil requires moderately cool water according to the HVAC load. Then 2 kinds of chilled water in terms of temperature should be prepared. The structure help saving the energy consumption for air-conditioning because the higher chilled water temperature means the better chiller efficiency (COP). Next, the advanced control method that is called dasiaAir-Water cooperation systempsila is introduced. The control system mainly focused on energy savings through changing the temperature of chilled water and supply air according to the HVAC load and weather conditions. In the paper, we introduce Next generation HVAC system with its control system and evaluation results of the system for the model-building simulator.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130370311","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 : 2008-10-21DOI: 10.1109/SICE.2008.4654820
K. Kikuchi, M. Miwa, S. Tsuchitani
Nafionreg-based ionic polymer-metal composites (IPMCs), whose counter ions are exchanged using ionic liquids, are fabricated. EMIBF4, BMIBF4, and BMIPF6 are used as ionic liquids. During long-term (180 min.) operation in air, changes in curvature of IPMCs are about 10% of the initial one. This change is enough smaller than that of conventional IPMCs using metallic counter ion. The curvature is larger in IPMC having lower charge transfer resistance, which is evaluated measuring frequency dependent complex impedance of IPMC. Furthermore, charge transfer resistance of IPMC decreases with increase in environmental humidity.
{"title":"Evaluation of basic operating characteristics of ion conductive polymer actuator using ionic liquid","authors":"K. Kikuchi, M. Miwa, S. Tsuchitani","doi":"10.1109/SICE.2008.4654820","DOIUrl":"https://doi.org/10.1109/SICE.2008.4654820","url":null,"abstract":"Nafionreg-based ionic polymer-metal composites (IPMCs), whose counter ions are exchanged using ionic liquids, are fabricated. EMIBF4, BMIBF4, and BMIPF6 are used as ionic liquids. During long-term (180 min.) operation in air, changes in curvature of IPMCs are about 10% of the initial one. This change is enough smaller than that of conventional IPMCs using metallic counter ion. The curvature is larger in IPMC having lower charge transfer resistance, which is evaluated measuring frequency dependent complex impedance of IPMC. Furthermore, charge transfer resistance of IPMC decreases with increase in environmental humidity.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130560420","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 : 2008-10-21DOI: 10.1109/SICE.2008.4654651
K. Okano, K. Hagino
In this paper, we study an optimal control problem for a nonlinear system with uncertainties. It is shown that a positive definite differentiable function is convertible into the function which approximates the solution of an Hamilton-Jacobi-Bellman (HJB) equation by multiplying a scalar value coefficient to be adjusted for each state. And it is shown that a Lyapunov function designed by an adaptive backstepping method is also convertible into the function which approximates the solution of an HJB equation with an unknown parameter and an adaptive law for each state. The proposed controller doesnpsilat give the minimum value of an objective function but it decreases the value of an objective function in comparison with a backstepping controller. The effectiveness of the proposed controller is shown by numerical examples.
{"title":"Adaptive control design approximating solution of Hamilton-Jacobi-Bellman equation for nonlinear strict-feedback system with uncertainties","authors":"K. Okano, K. Hagino","doi":"10.1109/SICE.2008.4654651","DOIUrl":"https://doi.org/10.1109/SICE.2008.4654651","url":null,"abstract":"In this paper, we study an optimal control problem for a nonlinear system with uncertainties. It is shown that a positive definite differentiable function is convertible into the function which approximates the solution of an Hamilton-Jacobi-Bellman (HJB) equation by multiplying a scalar value coefficient to be adjusted for each state. And it is shown that a Lyapunov function designed by an adaptive backstepping method is also convertible into the function which approximates the solution of an HJB equation with an unknown parameter and an adaptive law for each state. The proposed controller doesnpsilat give the minimum value of an objective function but it decreases the value of an objective function in comparison with a backstepping controller. The effectiveness of the proposed controller is shown by numerical examples.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127012213","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 : 2008-10-21DOI: 10.1109/SICE.2008.4655247
M. Ito, N. Sato, M. Sugimoto, N. Shiroma, M. Inami, F. Matsuno
We proposed a vehicle remote control method using past images. This method provides an operator with a birdpsilas-eye view image of the vehicle for easy remote control in a remote environment. This method was mainly adapted to a flat indoor environment. In this paper, we extend it to a 3D outdoor environment by using a GPS and a three-axis attitude sensor.
{"title":"A teleoperation interface using past images for outdoor environment","authors":"M. Ito, N. Sato, M. Sugimoto, N. Shiroma, M. Inami, F. Matsuno","doi":"10.1109/SICE.2008.4655247","DOIUrl":"https://doi.org/10.1109/SICE.2008.4655247","url":null,"abstract":"We proposed a vehicle remote control method using past images. This method provides an operator with a birdpsilas-eye view image of the vehicle for easy remote control in a remote environment. This method was mainly adapted to a flat indoor environment. In this paper, we extend it to a 3D outdoor environment by using a GPS and a three-axis attitude sensor.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124121852","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 : 2008-10-21DOI: 10.1109/SICE.2008.4655112
H. Mohamed, E. L. Lau, Mahmoud Moghavvemi, S.S. Yang
This paper presents the design and implementation of a bang-bang-like sliding mode control (SMC) methodology to control the flux and speed of an induction motor. The proposed control structure uses a fuzzy logic membership function to combine the bang-bang controller with a PI controller to reduce the chatter created by the switching control input. In this strategy, SMC is responsive during transient state while PI control becomes fully active in the steady state area. This will ensure that the final controller will avoid the switching controllerpsilas inherent chattering problem in steady state and PIpsilas overshoot, long settling time and rise time problems. The combination of both control strategies through fuzzy logic provides a mean to create a hybrid control strategy. Simulations of the proposed strategy on the flux and speed controllers displayed diminished chatter, overshoot and significant reduction of settling time.
{"title":"Reduced chatter Bang-Bang-like SMC flux and speed control of induction motor","authors":"H. Mohamed, E. L. Lau, Mahmoud Moghavvemi, S.S. Yang","doi":"10.1109/SICE.2008.4655112","DOIUrl":"https://doi.org/10.1109/SICE.2008.4655112","url":null,"abstract":"This paper presents the design and implementation of a bang-bang-like sliding mode control (SMC) methodology to control the flux and speed of an induction motor. The proposed control structure uses a fuzzy logic membership function to combine the bang-bang controller with a PI controller to reduce the chatter created by the switching control input. In this strategy, SMC is responsive during transient state while PI control becomes fully active in the steady state area. This will ensure that the final controller will avoid the switching controllerpsilas inherent chattering problem in steady state and PIpsilas overshoot, long settling time and rise time problems. The combination of both control strategies through fuzzy logic provides a mean to create a hybrid control strategy. Simulations of the proposed strategy on the flux and speed controllers displayed diminished chatter, overshoot and significant reduction of settling time.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116305394","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 : 2008-10-21DOI: 10.1109/SICE.2008.4654650
K. Mutoh, A. Sano
Recently the control of hybrid system has attracted many research efforts. However, few studies have been made on hybrid systems with unknown parameters. In this paper, model reference adaptive controller design is explored for a class of linear hybrid system called piecewise affine systems, based on the concept of the polynomial constraints which can decouple the model parameters from the inference of the hybrid state and the switching mechanism. The validity of the proposed controller design method is examined in numerical simulations, in which a simple hybrid system consisting of three first-order subsystems.
{"title":"Adaptive control of a class of linear hybrid system","authors":"K. Mutoh, A. Sano","doi":"10.1109/SICE.2008.4654650","DOIUrl":"https://doi.org/10.1109/SICE.2008.4654650","url":null,"abstract":"Recently the control of hybrid system has attracted many research efforts. However, few studies have been made on hybrid systems with unknown parameters. In this paper, model reference adaptive controller design is explored for a class of linear hybrid system called piecewise affine systems, based on the concept of the polynomial constraints which can decouple the model parameters from the inference of the hybrid state and the switching mechanism. The validity of the proposed controller design method is examined in numerical simulations, in which a simple hybrid system consisting of three first-order subsystems.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116369773","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 : 2008-10-21DOI: 10.1109/SICE.2008.4654658
A.N. Cuk Supriyadi, I. Ngamroo, A. Kunakorn, S. Dechanupaprittha, M. Watanabe, Y. Mitani, T. Hashiguchi, T. Goda
This paper proposes a design of robust power system stabilizer (RPSS) based on inverse additive perturbation optimization in an interconnected power system with wind farms. In the design, system uncertainties are represented by the inverse additive model. The robust stability condition is used to form the optimization problem of PSS parameters. The structure of PSS is a conventional second-order lead-lag controller. The genetic algorithm is applied to solve the problem and achieve the PSS parameters. Simulation studies in the two-area four-machine system with wind farms confirm that the damping effect and robustness of the proposed PSS are superior to those of the compared PSS.
{"title":"Inverse additive perturbation-based optimization of robust PSS in an interconnected power system with wind farms","authors":"A.N. Cuk Supriyadi, I. Ngamroo, A. Kunakorn, S. Dechanupaprittha, M. Watanabe, Y. Mitani, T. Hashiguchi, T. Goda","doi":"10.1109/SICE.2008.4654658","DOIUrl":"https://doi.org/10.1109/SICE.2008.4654658","url":null,"abstract":"This paper proposes a design of robust power system stabilizer (RPSS) based on inverse additive perturbation optimization in an interconnected power system with wind farms. In the design, system uncertainties are represented by the inverse additive model. The robust stability condition is used to form the optimization problem of PSS parameters. The structure of PSS is a conventional second-order lead-lag controller. The genetic algorithm is applied to solve the problem and achieve the PSS parameters. Simulation studies in the two-area four-machine system with wind farms confirm that the damping effect and robustness of the proposed PSS are superior to those of the compared PSS.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"23 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113974734","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 : 2008-10-21DOI: 10.1109/SICE.2008.4654838
Xin Li, K. Kawashima, T. Kagawa
Vortex levitation can achieve non-contact handling by blowing air into a vortex cup through a tangential nozzle to generate a swirling air flow. In this paper, its dynamic characteristics are analyzed and discussions are laid upon the behavior of a work piece at the moment when it is picked up by the vortex cup. From the dynamic handling experiment, it is made clear that the work piece would oscillate with little damping when it is picked up, which may lead to an unstable levitation. In order to restrain the work piece from oscillating, an auxiliary annular flat skirt is designed empirically and set on the surrounding of the vortex cup to entrap an air layer. Relative movement would cause viscous damping force due to the squeeze damping effect of this air layer so that the oscillation can be damped to zero just in several periods. Furthermore, the damping effect is confirmed experimentally by observing pressure hysteresis in a pressure dynamic response experiment.
{"title":"Dynamic characteristics of vortex levitation","authors":"Xin Li, K. Kawashima, T. Kagawa","doi":"10.1109/SICE.2008.4654838","DOIUrl":"https://doi.org/10.1109/SICE.2008.4654838","url":null,"abstract":"Vortex levitation can achieve non-contact handling by blowing air into a vortex cup through a tangential nozzle to generate a swirling air flow. In this paper, its dynamic characteristics are analyzed and discussions are laid upon the behavior of a work piece at the moment when it is picked up by the vortex cup. From the dynamic handling experiment, it is made clear that the work piece would oscillate with little damping when it is picked up, which may lead to an unstable levitation. In order to restrain the work piece from oscillating, an auxiliary annular flat skirt is designed empirically and set on the surrounding of the vortex cup to entrap an air layer. Relative movement would cause viscous damping force due to the squeeze damping effect of this air layer so that the oscillation can be damped to zero just in several periods. Furthermore, the damping effect is confirmed experimentally by observing pressure hysteresis in a pressure dynamic response experiment.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"27 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114029647","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 : 2008-10-21DOI: 10.1109/SICE.2008.4655045
A. Ohta, N. Amano
This paper proposes a technique which predicts the collision of human and the surrounding objects, using physical simulator and stereo vision system, in order to equip for support robot moving with human. This study aims at development of the robot which supports going out, to being good health of human. It is important that the robot predicts human safety. This study uses stereo vision system and physical simulator as a technique which the robot predicts. This paper shows the technique of converting the point data obtained from stereo vision system so that it could apply to a physical simulator.
{"title":"Collision prediction sin physical simulator and stereo vision system for human support robot","authors":"A. Ohta, N. Amano","doi":"10.1109/SICE.2008.4655045","DOIUrl":"https://doi.org/10.1109/SICE.2008.4655045","url":null,"abstract":"This paper proposes a technique which predicts the collision of human and the surrounding objects, using physical simulator and stereo vision system, in order to equip for support robot moving with human. This study aims at development of the robot which supports going out, to being good health of human. It is important that the robot predicts human safety. This study uses stereo vision system and physical simulator as a technique which the robot predicts. This paper shows the technique of converting the point data obtained from stereo vision system so that it could apply to a physical simulator.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114731433","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 : 2008-10-21DOI: 10.1109/SICE.2008.4655070
T. Hatanaka, N. Kitudomrat, M. Fujita
In this paper, we consider a group of agents with state and input constraints. The objective of this paper is to make the agents reach a desired formation while avoiding constraint violations. This paper considers two types of constraints: coupled and decoupled constraints. We prepare so-called a safe region which contains all the pairs of initial states such that both types of constraints are satisfied. In order to meet the objective, we present a distributed receding horizon control algorithm consisting of two algorithms: decision making algorithm and reference management algorithm. We show that the present algorithm achieves constraint fulfillment under some reasonable conditions.
{"title":"Formation control via receding horizon control: A set theoretic approach","authors":"T. Hatanaka, N. Kitudomrat, M. Fujita","doi":"10.1109/SICE.2008.4655070","DOIUrl":"https://doi.org/10.1109/SICE.2008.4655070","url":null,"abstract":"In this paper, we consider a group of agents with state and input constraints. The objective of this paper is to make the agents reach a desired formation while avoiding constraint violations. This paper considers two types of constraints: coupled and decoupled constraints. We prepare so-called a safe region which contains all the pairs of initial states such that both types of constraints are satisfied. In order to meet the objective, we present a distributed receding horizon control algorithm consisting of two algorithms: decision making algorithm and reference management algorithm. We show that the present algorithm achieves constraint fulfillment under some reasonable conditions.","PeriodicalId":152347,"journal":{"name":"2008 SICE Annual Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124447071","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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