掲載種別：研究論文（学術雑誌）   共著区分：単著  

内燃機関のさらなる高効率化のために、過渡運転状態での使用頻度が多い自動車用ガソリン機関を、パラメータ変化しても精度良く制御することが望まれる。そこで速応性の優れたフィードフォワード制御系において、非線形計画法をオンライン実施して適応化を行い、過渡時のエンジン回転速度制御の精度向上を検討した。

DOI： 10.11351/jsaeronbun.50.963

CiNii Article

掲載種別：研究論文（学術雑誌）  

A new design method that satisfies the setting settling time with small maximum overshoot in a servo controller was developed using a PI controller and an internal feedback system. The internal feedback system consists of the model parameter of the controlled object that was approximated as a second-order lag-time system. Therefore, an adaptive ability that counteracts the changing model parameters was required. In this paper, the variable parameters of the controlled object were obtained by on-line execution of a non-linear least-squares method. Suitable adaptation by the developed method was confirmed in simulation and experimental tests.

DOI： 10.1016/j.ifacol.2018.06.126

掲載種別：研究論文（学術雑誌）  

<p>In order to satisfy the setting settling time and overshoot, a new design method of controller was developed using a model parameter which was approximated as a second-order lag-time system. Then, an effectiveness was experimentally demonstrated as an engine speed controller. In order to operate wide conditions, however, an adaptive ability was required for parameter change. This paper investigated regarding an on-line execution of non-linear least square problem to obtain the changed controlled plant model parameter. A simulation study were carried out and a suitable adaption were experimentally demonstrated.</p>

DOI： 10.1299/transjsme.17-00562

CiNii Article

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

ガソリン機関の燃費向上のために，EGR利用や，頻繁なエンジンの停止起動などが増加している．そのような場合においても排出ガス浄化効率最適化のためには空燃比の精密な制御が必要である．近年様々な制御対象に対して適用されているモデル予測制御を過渡時空燃比制御に適用するための検討を行い実験により検証した．

DOI： 10.11351/jsaeronbun.48.757

CiNii Article

掲載種別：研究論文（学術雑誌）  

モデル予測制御において，制御対象を線形モデル化して設計した場合，モデルパラメータが設計時から変化すると制御性能は悪化するが，モデルパラメータが制御対象と一致していれば，常に最適制御が可能である．そこで，MPCを用いた過渡時空燃比制御において遺伝的アルゴリズムを用いたオンライン適応化について検討した．

DOI： 10.11351/jsaeronbun.48.569

CiNii Article

掲載種別：研究論文（学術雑誌）  

著者らは，所望する時間応答の整定時間とオーバーシュート量を指定するだけで構成できる，簡便な閉ループサーボ系設計手法を提案してきた．本報告はこの設計手法をガソリン機関の点火時期～回転速度制御系へ適用するための検討を行い，実験において検証を行った．

DOI： 10.11351/jsaeronbun.47.1177

CiNii Article

掲載種別：研究論文（学術雑誌）   共著区分：単著  

ガソリン機関の燃費改善の目的でEGRが用いられることが近年多い。どのようなEGR条件においても理論空燃比近傍に制御するためにはロバストな制御系が必要不可欠である。そこで，吸気弁開時期変化による内部EGR使用時において，適応FF+FB制御機構を用いて様々な運転状態における過渡時空燃比制御のロバスト性を検討した。

DOI： 10.11351/jsaeronbun.46.705

CiNii Article

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）   共著区分：単著  

Recently, in order to improve the fuel consumption of a gasoline engine, a condition of mixed intake gas was varied to improve combustion efficiency. Besides, a transient state was increased in the test-mode of regulation. In order to purify the exhaust gas efficiently with a three-way catalyst, the AFR should be controlled within the window around a stoichiometric ratio. Therefore, a precise control system was required to control AFR to the target value under any intake gas condition. For a fast-response and highly robust control system, both a feed-forward(FF) controller and a feed back(FB) controller were required. And those controller were desirable to equip with a robustness or an adaptability. From this point of view, in order to add an adaptability to the model based FF controller, the error value was used to adjust the compensation value. And the feedback controller was designed using the backstepping method that was well known as a nonlinear adaptive controller. And both controller was operated as if those were fused in one-controller, then, a precise AFR control results were obtained. Then, Two sets of parameters in each controller were provided and an investigation was carried out as to which combination is superior for robustness regarding several initial starting engine speeds.

DOI： 10.1299/transjsme.2014dr0124

CiNii Article

掲載種別：研究論文（学術雑誌）  

In this paper, we treat 2 dimensional systems or systems which can be approximated as 2 dimensional systems. We will propose a PI control scheme of a servo system design that gives the shortest M% settling time and satisfies a percent overshoot requirement for an assigned M. The usefulness of the proposing method is demonstrated through examples.

DOI： 10.5687/iscie.27.1

CiNii Article

掲載種別：研究論文（学術雑誌）   共著区分：単著  

The regulation about emission purification and fuel consumption of an automobile becomes increasingly strict for environmental issue. Especially, the performance while transient state is focused on because transient state was increased in the new JC08 emission test-mode. Emission purification of the gasoline engine is attained both using a three way catalyst and controlling air fuel ratio(AFR) by means of an oxygen sensor while steady state. However, while transient state, AFR is deteriorated because of non-linear character such as a fuel wall-wet flow balance, allowance of each engine, aging and ambient of operation. Therefore, highly performed controller is necessary for AFR control at transient state. Both a feedforward and a feedback control were required to obtain such performance. However, each control system was designed independently. Therefore harmonizing both control system is desired when those were performed at a same time. In this paper, adaptive gain system was respectively equipped to the feedforward system and the feedback control. After some time repeat of a regulate control, those control system were fused and performed as a feedforward controller with a small feedback compensation. Then, the experiment were also carried out at different operating condition. The results showed a good regulating performance as a transient state regulator.

DOI： 10.1299/kikaic.78.2084

CiNii Article

掲載種別：研究論文（学術雑誌）   共著区分：単著  

燃費低減と排出ガス浄化のために吸排気バルブ駆動などガソリン機関運転パラメータの可変化が進み、過渡時空燃比制御の高精度化がますます必要である。適応制御を組み合わせることにより高精度でロバストな過渡時空燃比制御ができたことを示す。

DOI： 10.11351/jsaeronbun.43.331

CiNii Article

掲載種別：研究論文（学術雑誌）   共著区分：単著  

The regulation about emission purification and fuel consumption of an automobile becomes increasingly strict for environmental issue. Especially, the performance while transient state is focused on because transient state was increased in the new JC08 emission test-mode. Emission purification of the gasoline engine is attained both using a three way catalyst and controlling air fuel ratio(AFR) by means of an oxygen sensor while steady state. However, while transient state, AFR is deteriorated because of non-linear character such as a fuel wall-wet flow balance, allowance of each engine, aging and ambient of operation. Therefore, highly performed controller is necessary for AFR control at transient state. In this paper, an application of simple adaptive control(SAC) is investigated for AFR regulate control to compensate a disturbance affection at transient state. SAC has two degrees freedom system that was consist of both a feed forward tracker and a feedback stabilizer. Then, SAC control the time response of a plant to agree with that of a reference model. However, there were few report that SAC was applied as a regulator to overcome a disturbance. This paper investigated the control system to apply SAC for AFR regulate control at transient state. Then, the experiment were carried out at different operating condition, and the results showed a good regulating performance as a transient state regulator.

DOI： 10.1299/kikaic.77.2673

CiNii Article

掲載種別：研究論文（学術雑誌）   共著区分：単著  

燃費低減と排出ガス浄化のために吸排気バルブ駆動などガソリン機関運転パラメータの可変化が進み、過渡時空燃比制御の高精度化がますます必要である。モデル適応制御の一つである単純適応制御をレギュレータである過渡時空燃比制御に用い、高精度に空燃比制御ができたことを示す。

DOI： 10.11351/jsaeronbun.42.1073

CiNii Article

掲載種別：研究論文（学術雑誌）  

CiNii Article

掲載種別：研究論文（学術雑誌）  

The utilisation of the oxygen storage capacity of TWC is recently focused on for the improvement of emission purification and the purification of an engine exhaust gas is achieved fairly high level. However, the control system is seemed to be complicated to use such ability. For the simple utilisation of this ability, a new air fuel ratio control system and algorithm was investigated. The fuel injection mass was modulated periodically and the air excess ratio was detected at the TWC outlet by an oxygen sensor. As the output signal of an oxygen sensor was switching type, the signal value was filtered by a moving average method for translation to an analog value and the moving average value was used for the periodic modulation control as the control value. Furthermore, the two feed forward control system were equipped for fast response and stability of the fuel control. This simple control system was operated at transient state in many driving conditions, and compared with other control systems. The proposed control system can cut the emissions of NO_x and THC concurrently and the reduced amount were larger than other control system.

CiNii Article

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（国際会議プロシーディングス）  

掲載種別：研究論文（国際会議プロシーディングス）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（国際会議プロシーディングス）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（国際会議プロシーディングス）  

掲載種別：研究論文（国際会議プロシーディングス）  

掲載種別：研究論文（国際会議プロシーディングス）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）  

掲載種別：研究論文（学術雑誌）