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Guidance impulse algorithms for air bomb control

BULLETIN OF THE POLISH ACADEMY OF SCIENCES-TECHNICAL SCIENCES 2012年第4期60卷 825-833页

作者： Glebocki, R. Warsaw Univ Technol Fac Power & Aeronaut Engn PL-00665 Warsaw Poland

In this paper, some results of research concerning the development of guidance of bombs were presented. The paper presents conceptions of an impulse (gasodynamic) control system, the measurement unit based on IMU/GPS signals and control algorithms based on predicted trajectories. The presented results of simulation research are based on the numerical model of the bomb and real signals from measurement devices.

关键词： control flying objects control algorithms air bombs automatic flight control systems

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Finite time response control of state blocking systems

Finite time response control of state blocking systems

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19th International Conference on control Systems and Computer Science

作者： Marin, Constantin Selisteanu, Dan Sendrescu, Dorin Univ Craiova Dept Automat Craiova Romania

ISBN: (纸本)9780769549804

This paper continues the results obtained by the authors on State Blocking Systems (SBS). The approach proposed by the authors is based on the so-called blocking function which may be considered as a new input variable that continuously changes the system structure. The paper deals with an original method for Finite Time Response (FTR) control of the state blocking systems. Because of the blocked components and of the active subsystem uncontrollable components, an SBS system appears as an affine system with FTR control procedures unknown in literature. It is developed a new procedure for the affine systems FTR synthesis, called the equivalent input method. For this purpose it calculates an equivalent input which will determine, according to a quadratic criterion, the best approximation of the affine component. Experimental results are presented to justify the method approached in the paper.

关键词： Finite time response Variable structure systems control algorithms Mathematical models

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controlling 6-DOF Systems with Multiple Exciters

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SOUND AND VIBRATION 2013年第10期47卷 6-11页

作者： Ayres, Russell Underwood, Marcos A. Keller, Tony Spectral Dynam Inc San Jose CA USA

Many different multi-exciter configurations have been created to produce motion in six degrees-of-freedom (6-DOF) simultaneously. This article examines some of these configurations and gives examples of controlling one popular setup, using advanced MIMO (multiple-input and multiple-output) control. Several types of problems were encountered with each configuration, and possible causes and suggested remedies are presented.

关键词： control algorithms

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External validation and sub-cohort analysis of stochastic forecasting models in NICU cohorts

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BIOMEDICAL SIGNAL PROCESSING AND control 2013年第4期8卷 409-419页

作者： Dickson, Jennifer L. Floyd, Richard P. Le Compte, Aaron J. Fisk, Liam M. Chase, J. Geoffrey Lynn, Adrienne Shaw, Geoffrey M. Univ Canterbury Dept Mech Engn Christchurch 1 New Zealand Christchurch Womens Hosp Neonatal Dept Christchurch New Zealand Christchurch Hosp Dept Intens Care Christchurch New Zealand

Hyperglycaemia is a prevalent complication in the neonatal intensive care unit (NICU) and is associated with worsened outcomes. It occurs as a result of prematurity, under-developed endogenous glucose regulatory systems, and clinical stress. The stochastic targeting (STAR) framework provides patient-specific, model-based glycaemic control with a clinically proven level of confidence on the outcome of treatment interventions, thus directly managing the risk of hypo- and hyper-glycaemia. However, stochastic models that are over conservative can limit control performance. Retrospective clinical data from 61 episodes (25 retrospective to STAR, and 36 from a prospective-STAR blood glucose control study) of insulin therapy in very-low birth weight (VLBW) and extremely-low birth weight (ELBW) neonates are used to create a new stochastic model of model-based insulin sensitivity (S-I [L/mU/min]). Sub-cohort models based on gestational age (GA) and birth weight (BW) are also created. Performance is assessed by the percentage of patients who have 90% of actual intra-patient variability in S-I captured by the 90% confidence bands of the cohort based (inter-patient) stochastic variability model created. This assessment measures per-patient accuracy for any given cohort model. Per-patient coverage trends were very similar between prospective and retrospective cohorts, providing a measure of external validation of cohort similarity. Per-patient coverage was improved through the use of BW and GA dependent stochastic models, which ensures that the stochastic models more accurately capture both inter- and intra-patient variability. Stochastic models based on insulin sensitivities during insulin treatment periods are tighter, and give better and safer glycaemic control. Overall it seems that inter-patient variation is more significant than intra-patient variation as a limiting factor in this stochastic forecasting model, and a small number of patients are essentially different in beha

关键词： Insulin sensitivity control algorithms Physiological models Simulation Intensive care

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Convex time-optimal robot path following with Cartesian acceleration and inertial force and torque constraints

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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND control ENGINEERING 2013年第10期227卷 724-732页

作者： Debrouwere, Frederik Van Loock, Wannes Pipeleers, Goele Diehl, Moritz Swevers, Jan De Schutter, Joris Katholieke Univ Leuven Dept Mech Engn Div PMA BE-3001 Heverlee Belgium Katholieke Univ Leuven Dept Elect Engn Div SCD BE-3001 Heverlee Belgium

In time-optimal robot path following, a predetermined geometric trajectory is followed exactly in a time-optimal way considering system constraints, for example, actuator constraints. For a simplified robotic manipulator, this optimization problem can be reformulated into a convex optimization problem when only considering some system constraints. In this article, the convex approach is extended to account for Cartesian acceleration constraints and in turn account for inertial forces and torques acting on a load held by the robot. The focus of this article is on the reformulation of these Cartesian acceleration and inertial forces and torques to preserve the convexity of the optimization problem. We present a series of applications that result in solving a convex optimization problem, illustrating the practicality of the proposed reformulations.

关键词： control algorithms intelligent control systems mechanical control systems

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MODEL LEARNING IN A MULTISTAGE MACHINING PROCESS: ONLINE IDENTIFICATION OF FORCE COEFFICIENTS AND MODEL USE IN THE MANUFACTURING ENTERPRISE

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8th International Manufacturing Science and Engineering Conference

作者： Mehta, Parikshit Mears, Laine Clemson Univ Dept Mech Engn Clemson SC 29634 USA

ISBN: (纸本)9780791855461

This work presents a systems approach in machining process control. Traditional force-based machining process control has been focused on single machine-single operation. The force or power sensor is used to measure the instantaneous force/power, and control action is taken by changing the feedrate in real time to follow a given force setpoint. The application of such control has successfully been implemented to prevent chatter and to elongate tool life by minimizing tool wear. This research seeks to extend the application of control algorithms to learn about the machining system (comprised in this context of a workpiece being operated on in progressive machining), and how knowledge generated by the process can be passed on to the next process for optimization. To demonstrate this, turning of a partially hardened bar is explored. A nonlinear mechanistic force model-based control framework attempts to control the cutting force at a designated setpoint, with material properties changing over the cut. The force coefficients for the material are calculated offline using experimental data and Bayesian inference methods. Since the hardened part of the bar will shift the force coefficient values, an online estimation strategy (Bayesian Recursive Least Square estimator) is used to learn the new coefficients as well as satisfying the control objective. With the newly learned coefficients passed downstream, the subsequent operation experiences no compromise of control objective as well reduces the maximum values of force encountered. Numerical analyses presented show the adaptation and control scheme performance.

关键词： control algorithms Machinery Manufacturing Chatter Sensors Materials properties Optimization Numerical analysis Cutting Machining Wear Process control

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Power Converter-based Three-phase Induction Motor Load Emulator

Power Converter-based Three-phase Induction Motor Load Emula...

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28th Annual IEEE Applied Power Electronics Conference and Exposition ()APEC)

作者： Wang, Jing Ma, Yiwei Yang, Liu Tolbert, Leon M. Wang, Fred Univ Tennessee Ctr Ultrawide Area Resilient Elect Energy Transmi Knoxville TN 37996 USA

ISBN: (纸本)9781467343558

A three-phase induction motor emulator using power electronic converters is introduced in this paper. The emulator is intended to be used in an ultra-wide-area grid transmission network emulator represented by regenerative converters structure. The load emulator converter is controlled in rectifier mode to behave like the real induction motor load, whose model is described and programmed in the digital controller. This paper discusses specifically about the induction motor dynamic modeling, numerical method used in the controller, and finally experimental result verification of starting up transient.

关键词： Hardware testbed regenerative converter ultra-wide-area transmission network emulator power electronic load control algorithms Runge-Kutta method starting up transient dynamic performance

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Research on Adaptive Road control algorithms of Anti-lock Braking System

Research on Adaptive Road Control Algorithms of Anti-lock Br...

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2009 IEEE 10th International Conference on Computer-Aided Industrial Design & Conceptual Design(2009 IEEE 第十届国际计算机辅助工业设计与概念设计学术会议 CAID&CD'2009)

作者： Mingxing Ma Jingxin Chen Guomin Xu School of Mechanical Engineering Yangzhou University Yangzhou Jiangsu 225009 China

Using vehicle dynamics, in this paper an automotive ABS control algorithms, which adaptive to the adhesive coefficient of road surface was proposed. And also an ABS experiment bench was explored. Simulation and experiment studies results show that this ABS system can control the wheel slip well and the control effect is good, it provides an effective method of ABS research.

关键词： Automotive Anti-lock Braking System control algorithms

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Research on Adaptive Road control algorithms of Anti-lock Braking System

Research on Adaptive Road Control Algorithms of Anti-lock Br...

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E-Business·Creative Design·Manufacturing——2009 IEEE 10th International Conference on Computer-Aided Industrial Design & Conceptual Design（CAID&CD’2009）

作者： Mingxing Ma,Jingxin Chen,Guomin Xu School of Mechanical Engineering,Yangzhou University Yangzhou,Jiangsu,225009,China

Using vehicle dynamics,in this paper an automotive ABS control algorithms,which adaptive to the adhesive coefficient of road surface was *** also an ABS experiment bench was *** and experiment studies results show that this ABS system can control the wheel slip well and the control effect is good,it provides an effective method of ABS research.

关键词： Automotive Anti-lock Braking System control algorithms

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New Simulink control Block for Single Phase Shunt Active Power Filters

New Simulink Control Block for Single Phase Shunt Active Pow...

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International Symposium on Advanced Topics in Electrical Engineering

作者： George Adam Andreea Zban? (Adam) Gheorghe Livin? Technical University of Ia?i Romania

ISBN: (纸本)9781467359795

Harmonic distortion introduced by nonlinear loads in the electric system is hard to measure and anticipate, and the effects are harmful to other loads. To compensate these drawbacks, usually active power filters are used, but their performance depends on the method used to generate the reference current, and on the parameters of the filter. This paper presents a new Matlab Simulink control block which allows the rapid tuning of filter's parameters, enables the selection of one of the six most usual control algorithms, and also can generate code for future implementation on microcontrollers.

关键词： active power filters control algorithms Simulink control block

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