Design and Development of a Novel 2DOF Actuation Slosh Rig

2008 ◽  
Vol 131 (1) ◽  
Author(s):  
Prasanna S. Gandhi ◽  
Keyur B. Joshi ◽  
N. Ananthkrishnan
Keyword(s):  
Control Strategy ◽  
Liquid Fuel ◽  
Open Loop ◽  
Control Algorithms ◽  
Launch Vehicles ◽  
Lateral Direction ◽  
Identification Schemes ◽  
Ideal Tool ◽  
The Times ◽  
And Control

Sloshing of liquid in a tank is critical in several areas, including launch vehicles carrying liquid fuel, satellites, industrial packaging of liquids, systems handling molten metal, and so on. Hence modeling, characterization, and control of nonlinear slosh phenomena are important in these applications. To study slosh dynamics, develop useful identification schemes, and design and verify slosh control algorithms, a new 2DOF actuation slosh rig is reported in this paper considering the fact that most of the times these tanks are subjected to linear as well as pitching excitation/control inputs. The paper discusses mechatronic design and several advantages that the new design offers. A slosh phenomenon of beating observed when both lateral and pitching excitations are provided is simulated using a model based on pendulum approximation to slosh and is further verified in experiments. The results confirm that the effects of both excitations together can be detrimental against separate excitations of the same amplitude. Moreover, slosh compensation in open loop is demonstrated by giving excitation in pitching and developing a compensatory input in the lateral direction. Furthermore, active slosh control strategy is developed and its effectiveness is demonstrated with control in translation and disturbance in pitching. Thus the proposed rig is an ideal tool for the study, identification, and control development of slosh in the presence of two excitations/inputs.

Using a Hydraulically Balanced Beam System in Control Education

1997 ◽  
Vol 119 (4) ◽  
pp. 815-819 ◽  
Author(s):  
Pai-Hsueh Yang ◽  
Mark Lemkin ◽  
David M. Auslander
Keyword(s):  
Low Cost ◽  
Control Algorithms ◽  
Balance Beam ◽  
System A ◽  
Advanced Students ◽  
Ideal Tool ◽  
Control Education ◽  
And Control ◽  
Different Levels ◽  
Control Implementation

This paper discusses a low cost solution to teaching controls in the laboratory through the use of a novel balance beam. The balance beam provides a vehicle to study many aspects of both control implementation and control algorithms. Due to the complexity of the system, a full semester of laboratory exercises is provided for even advanced students. The flexibility of the system provides challenging exercises for different levels of education. A low overall cost translates to accessibility to more schools. The ability to achieve good tracking performance with a simple cascaded loop controller makes this an ideal tool for teaching controls in a laboratory setting.

Modeling and control through leadership of a refined flocking system

2014 ◽  
Vol 25 (02) ◽  
pp. 255-282 ◽  
Author(s):  
Alfio Borzì ◽  
Suttida Wongkaew
Keyword(s):  
Predictive Control ◽  
Control Strategy ◽  
Social Systems ◽  
Open Loop ◽  
Modeling And Control ◽  
Control Scheme ◽  
Nonlinear Conjugate Gradient ◽  
Optimality Systems ◽  
And Control ◽  
Conjugate Gradient Solver

A new refined flocking model that includes self-propelling, friction, attraction and repulsion, and alignment features is presented. This model takes into account various behavioral phenomena observed in biological and social systems. In addition, the presence of a leader is included in the system in order to develop a control strategy for the flocking model to accomplish desired objectives. Specifically, a model predictive control scheme is proposed that requires the solution of a sequence of open-loop optimality systems. An accurate Runge–Kutta scheme to discretize the optimality systems and a nonlinear conjugate gradient solver are implemented and discussed. Numerical experiments are performed that investigate the properties of the refined flocking model and demonstrate the ability of the control strategy to drive the flocking system to attain a desired target configuration and to follow a given trajectory.

Four-Fin Bio-Inspired UUV: Modeling and Control Solutions

2011 ◽  
Author(s):  
Jason D. Geder ◽  
Ravi Ramamurti ◽  
John Palmisano ◽  
Marius Pruessner ◽  
Banahalli Ratna ◽  
...  
Keyword(s):  
Stream Flow ◽  
Free Stream ◽  
Open Loop ◽  
Control Algorithms ◽  
Loop Control ◽  
Modeling And Control ◽  
Pectoral Fins ◽  
Flow Speeds ◽  
Computational Fluid Dynamics Cfd ◽  
And Control

This paper describes the modeling and control development of a bio-inspired unmanned underwater vehicle (UUV) propelled by four pectoral fins. Based on both computational fluid dynamics (CFD) and experimental fin data, we develop a UUV model that focuses on an accurate representation of the fin-generated forces. Models of these forces span a range of controllable fin parameters, as well as take into account leading-trailing fin interactions and free stream flow speeds. The vehicle model is validated by comparing open-loop simulated responses with experimentally measured responses to identical fin inputs. Closed-loop control algorithms, which command changes in fin kinematics, are tested on the vehicle. Comparison of experimental and simulation results for various maneuvers validates the fin and vehicle models, and demonstrates the precise maneuvering capabilities enabled by the actively controlled curvature pectoral fins.

scholarly journals MODELING AND CONTROL OF AN AUTOREFRIGERATED CSTR POLYMERIZATION REACTOR: IMPACT OF THE NON-CONDENSABLE GASES

2005 ◽  
Vol 4 (1) ◽  
pp. 69
Author(s):  
E. C. Vasco de Toledo ◽  
R. Maciel Filho
Keyword(s):  
Free Radicals ◽  
Steady State ◽  
Control Strategy ◽  
Process Intensification ◽  
Control Algorithms ◽  
Reliable Control ◽  
Modeling And Control ◽  
Polymerization Reactor ◽  
Reactor Temperature ◽  
And Control

The concept of process intensification is applied to a CSTR polymerization reactor, where bulk reactions take place via styrene free-radicals, connected to a semi-flooded horizontal condenser; the aim is to operate the system in a safe and efficient way. The results obtained show that the developed model was able to reproduce the major dynamic characteristics, even with the presence of non-condensable gases. The existence of such gases prevents the reactor from ever reaching a steady-state, as they accumulate in the system, increasing the condenser pressure and the reactor temperature and reducing the contact area and the mass of liquid in the condenser. To overcome this problem, the control strategy of this work proposes a regular purge of the condenser gases in order to avoid a collapse of the system. In this context, different control algorithms were also analyzed and it was concluded that a fast and reliable control of the reactor is only possible when advanced controllers are used.

scholarly journals MODELING AND CONTROL OF AN AUTOREFRIGERATED CSTR POLYMERIZATION REACTOR: IMPACT OF THE NON-CONDENSABLE GASES

2005 ◽  
Vol 4 (1) ◽  
Author(s):  
E. C. Vasco de Toledo ◽  
R. Maciel Filho
Keyword(s):  
Free Radicals ◽  
Steady State ◽  
Control Strategy ◽  
Process Intensification ◽  
Control Algorithms ◽  
Reliable Control ◽  
Modeling And Control ◽  
Polymerization Reactor ◽  
Reactor Temperature ◽  
And Control

The concept of process intensification is applied to a CSTR polymerization reactor, where bulk reactions take place via styrene free-radicals, connected to a semi-flooded horizontal condenser; the aim is to operate the system in a safe and efficient way. The results obtained show that the developed model was able to reproduce the major dynamic characteristics, even with the presence of non-condensable gases. The existence of such gases prevents the reactor from ever reaching a steady-state, as they accumulate in the system, increasing the condenser pressure and the reactor temperature and reducing the contact area and the mass of liquid in the condenser. To overcome this problem, the control strategy of this work proposes a regular purge of the condenser gases in order to avoid a collapse of the system. In this context, different control algorithms were also analyzed and it was concluded that a fast and reliable control of the reactor is only possible when advanced controllers are used.

Dry chip feedrate control using online chip moisture

TAPPI Journal ◽  
2018 ◽  
Vol 17 (05) ◽  
pp. 295-305
Author(s):  
Wesley Gilbert ◽  
Ivan Trush ◽  
Bruce Allison ◽  
Randy Reimer ◽  
Howard Mason
Keyword(s):  
Production Rate ◽  
Control Strategy ◽  
Rate Control ◽  
Near Infrared ◽  
Dry Mass ◽  
The Other ◽  
Process Variability ◽  
Moisture Sensor ◽  
Feedback Control Strategy ◽  
And Control

Normal practice in continuous digester operation is to set the production rate through the chip meter speed. This speed is seldom, if ever, adjusted except to change production, and most of the other digester inputs are ratioed to it. The inherent assumption is that constant chip meter speed equates to constant dry mass flow of chips. This is seldom, if ever, true. As a result, the actual production rate, effective alkali (EA)-to-wood and liquor-to-wood ratios may vary substantially from assumed values. This increases process variability and decreases profits. In this report, a new continuous digester production rate control strategy is developed that addresses this shortcoming. A new noncontacting near infrared–based chip moisture sensor is combined with the existing weightometer signal to estimate the actual dry chip mass feedrate entering the digester. The estimated feedrate is then used to implement a novel feedback control strategy that adjusts the chip meter speed to maintain the dry chip feedrate at the target value. The report details the results of applying the new measurements and control strategy to a dual vessel continuous digester.

MSDM Pondok Pesantren

2019 ◽  
Vol 4 (4) ◽  
pp. 403-422
Author(s):  
Ahmad Saefulloh ◽  
Fisher Zulkarnaen ◽  
Dewi Sadiah
Keyword(s):  
Data Collection ◽  
Human Resources ◽  
Human Resource ◽  
Human Resources Management ◽  
Resources Management ◽  
Know How ◽  
Highly Educated ◽  
The Times ◽  
And Control ◽  
Descriptive Method

ABSTRAK Penelitian ini bertujuan untuk mengetahui bagaimana implementasi manajemen sumber daya manusia pondok pesantren pagelaran II sumedang, dan mengetahui bagaimana hasil kinerja santri di pondok pesantren pagelaran II sumedang.Metode yang digunakan dalam penelitian ini adalah metode deskriptif, pengumpulan data dilakukan dengan menggunakan teknik observasi, studi dokumentasi dan wawancara.Hasil Penelitian ini menemukan bahwa peran manajemen sumber daya manusia dalam mengoptimalkan kinerja santri di pondok pesantren pagelaran II sumedang yang diawali dengan pengolaan dalam bentuk fungsi perencanaan dan operasional yang baru.Terutama pengrekrutan jajaran assatidz yang berdedikasi dan berpendidikan tinggi masuk ke pondok pesantren pagelaran II. Sehingga keberlangsungan pesantren akan berinovasi dan pengendalian selalu sesuai dengan perkembangan zaman. Sehingga dapat disimpulkan bahwa manajemen sumber daya manusia di pondok pesantren pagelaran II sumedang telah dijalankan dengan baik dan menunjukan keberhasilan dalam upaya menyiapkan insan kamil. ABSTRAK It aims to know how to implementation of human resources management hut pesantren by fire ii, and find out How did santri's performance result in the pesantren pagelaran 2 Sumedang. The method used in this study is a descriptive method, data collection is done using observation techniques, a documentary study and debriefing. This study found that human resource management's role in optimizing santri's performance in pondok pesantren pagelaran 2 Sumedang. That begin with processing in the form of new planning and operational functions. Particularly recruits for the dedicated, highly educated assatidz went into the pagelaran 2 Sumedang. So martial arts have continued to innovate and control always conforms to the development of The Times. So it is inadmissible that the human resources management at pesantren pagelaran 2 sumedang has been well run and show that is successful in preparing for the perfect human being.

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