http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Shiro Masuda,Kazuya Asno 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper considers a design method for a model predictive control(MPC) approach based on a unified performance index through out the start-up phase tension and looper control which consists of the non-contact and contact modes while the looper contacts with the strip as quickly as possible. The approach employs an optimal control condition with unknown terminal time, and the terminal condition. In addition, a decoupling control during the contact mode is employed in order to suppress the deviation of the striptension. The efficiency of the proposed method is shown through a numerical simulation.
Disturbance Attenuation Fictitious Reference Iterative Tuning Using Frequency Domain Approach
Shiro Masuda,Yuki Gohda,Yoshihiro Matsui 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
The paper gives a design method for a Fictitious Reference Iterative Tuning (FRIT) method for disturbance attenuation which can be designed using the frequency domain approach. The proposed method obtains the control parameters that optimize a performance index represented in the frequency domain, which evaluates how the closed loop frequency response is close to the ideal one in the presence of a given deterministic disturbance. The frequency domain performance index for the FRIT method consists of the Fourier transformation of oneshot experimental input-output data and disturbance signal. The paper shows that a band-path filter plays an important role in the Fourier transformation of the one-shot inputoutput data, and the optimal pre-filter, which well approximates the performance index to the original performance index, can be easily calculated in the frequency domain. Finally, numerical examples show that the control parameter tuning using frequency domain FRIT method with the optimal prefilter contributes to deriving a better control parameters which improve the disturbance response.
Shiro Masuda,Kohei Ishigaki 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper proposes a medthod for simultaneous estimation of disturbance and process gain using moving horizon estimation for discrete-time, single-input, single-output, linear time-invariant processes. The strategy for the proposed adaptive disturbance estimator is to minimize a moving-horizon performance index which consist of quadratic forms of estimated output error and disturbances. Furthermore, we propose a recalculation method using two patterns of estimated values of disturbance and process gain for different two input signals. Through a numerical simulation for the approximated process model of an oxygen converter gas recovery process, the efficiency of the proposed method will be shown.
Shiro Masuda 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10
A direct design approaches based on input-output measurements with no need for help from a plant model have attracted attention from several researchers. We have proposed such a disturbance attenuation Fictitious Reference Iterative Tuning (FRIT) using input-output data generated by step-type disturbances, and showed the effectiveness of the approach through experiments of DC motor control and helicopter attitude control. The paper applies the approach to the experimental data for liquid level control of a single tank. The PID gains are tuned so that the liquid level of the single tank would follow a disturbance reference model output. From the experimental result, the disturbance attenuation FRIT is effective for PID gain tuning from closed-loop input and output experimental data generated by a step-type disturbance.
PID Gain Tuning for Disturbance Attenuation Using FRIT Method
Yusuke Yasuda,Shiro Masuda,Manabu Kano 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Fictitious reference iterative tuning (FRIT) is a method for designing the feedback controller of an unknown plant model by optimizing the performance index that consists of the fictitious reference output computed from one-shot experimental input-output data. This paper proposes a PID gain tuning for disturbance attenuation using FRIT method. While the conventional FRIT tunes the PID gains so that the plant output follows the reference model output, the proposed one tunes the PID gains so that the disturbance response follows the reference model output. The proposed approach has the advantage that it more directly tunes the PID gains for the disturbance attenuation than the conventional ones. The efficiency of the proposed method is shown through a numerical example.
Monitoring and Scheduling Methods for MIMOFIFO Systems Utilizing Max-Plus Linear Representation
Hiroyuki Goto,Shiro Masuda 대한산업공학회 2008 Industrial Engineeering & Management Systems Vol.7 No.1
This paper proposes an approach to monitoring and scheduling methods for repetitive MIMO-FIFO DESs. We use max-plus algebra for modeling and formulation, known as an effective approach for controller design for this type of system. Because a certain type of linear equations in max-plus algebra can represent the system’s behavior, the principal concerns in past researches were how to solve the equations. However, the researches focused mainly on analyses of the relation between inputs and outputs of the system, which implies that the changes or the slacks of internal states were not clarified well. We first examine several properties of the corresponding state variables, which contribute to finding and tracing the float times in each process. Moreover, we provide a rescheduling method that can take into account delays or changes of the internal states. These methods would be useful in schedule control or progress management.
Derivation Algorithm of State-Space Equation for Production Systems Based on Max-Plus Algebra
Goto, Hiroyuki,Masuda, Shiro Korean Institute of Industrial Engineers 2004 Industrial Engineeering & Management Systems Vol.3 No.1
This paper proposes a new algorithm for determining an optimal control input for production systems. In many production systems, completion time should be planned within the due dates by taking into account precedence constraints and processing times. To solve this problem, the max-plus algebra is an effective approach. The max-plus algebra is an algebraic system in which the max operation is addition and the plus operation is multiplication, and similar operation rules to conventional algebra are followed. Utilizing the max-plus algebra, constraints of the system are expressed in an analogous way to the state-space description in modern control theory. Nevertheless, the formulation of a system is currently performed manually, which is very inefficient when applied to practical systems. Hence, in this paper, we propose a new algorithm for deriving a state-space description and determining an optimal control input with several constraint matrices and parameter vectors. Furthermore, the effectiveness of this proposed algorithm is verified through execution examples.