Control System Digital Computer Transfer Function Simulation

1962 ◽  
Vol E-5 (1) ◽  
pp. 15-17 ◽  
Author(s):  
Jens J. Jonsson
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Digital Computer

A Kind of a Controller with Digital Computer as a Compensator

2013 ◽  
Vol 753-755 ◽  
pp. 2543-2547
Author(s):  
Wei Yan ◽  
Xian Qi Huang ◽  
Jun Fan
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Transient Response ◽  
Digital Computer ◽  
Closed Loop ◽  
Feedback System ◽  
Feedback Control System ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
The Stability

A digital computer may serve as a compensator or a controller in a feedback control system. We may use the z'-transform of a transfer function to analyze the stability and transient response of a system. Thus, we may readily determine the response of a closed-loop feedback system with a digital computer serving as the compensator (or controller) block.

On the Vibration of a Translating String Coupled to Hydrodynamic Bearings

1990 ◽  
Vol 112 (3) ◽  
pp. 337-345 ◽  
Author(s):  
C. A. Tan ◽  
B. Yang ◽  
C. D. Mote
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Spatial Location ◽  
System Response ◽  
Thickness Variation ◽  
Translation Speed ◽  
Impedance Function ◽  
Hydrodynamic Bearing ◽  
Loop Transfer Function ◽  
Bearing Force

The vibration of a translating string, controlled through hydrodynamic bearing forces, is analyzed by the transfer function method. Interactions between the string response and the bearing film are described by the bearing impedance function. This function depends on the string translation speed, the frequency of the film thickness variation, and the spatial location of the bearings. The control system consists of the translating string, bearings, actuators and sensors, and feedback elements. An integral formulation of the controlled system response is proposed that leads to the closed-loop transfer function. The frequency response of the control system is studied in the system parameter space. The feasibility of adding active control to improve the bearing force control is also considered.

The design of an automatic patching system

SIMULATION ◽  
1968 ◽  
Vol 10 (6) ◽  
pp. 281-288 ◽  
Author(s):  
David A. Starr ◽  
Jens J. Jonsson
Keyword(s):  
Control System ◽  
Digital Computer ◽  
Analog Computer ◽  
Master Of Science ◽  
The Third ◽  
Specialized Software ◽  
Work Done ◽  
Switching Devices

An automatic patching system for analog computers is proposed. The system patches any set of component ter minals together, yet size and cost are practical. The design is accomplished in three steps: First, a "model" analog computer is defined and its components divided into modules. Components within a module connect to one another through an "intraface" which allows any terminal to connect to any other ter minal. Problem sections are patched within the modules and then joined together by an "intermodular" trunking system. Secondly, the principle of module chaining permits in dividual modules to access a limited number of other modules, rather than all other modules. This reduces the number of patching switches required by the intermodular trunking system and reduces the overall number of switches required. The third step, called concentration, brings the required number of patching switches down to a practical value by assuming that all analog computer terminals will not be in use at once. Switching devices called "concentrators" exploit this fact to reduce switch requirements. The automatic patching system is driven by a digital computer under control of specialized software, and to gether with the automatic patching control system it can patch large problems in times of the order of fifteen sec onds. The information in this paper is a result of work done for a Master of Science thesis.1

A Innovation Identification Approach of Control System by Irrational (Fractional) Transfer

2016 ◽  
Vol 3 (2) ◽  
pp. 336
Author(s):  
Nguyen Quang Dung ◽  
Tran Hoang Quang Minh
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Interpolation Method ◽  
Distributed Parameter ◽  
Computationally Efficient ◽  
Transient Responses ◽  
Adaptive Controllers ◽  
Real Interpolation Method ◽  
Identification Approach ◽  
Irrational Transfer Function

<p>In this paper, an innovative algorithm of identification of control system, described by irrational transfer function with distributed parameter characteristics - with irrational components, is proposed. Algorithm is based on real interpolation method (RIM). Parameters of irrational transfer function can be identified by its experimental transient responses. Each of them can be represented by an analytic expression, table or graph. The proposed method is computationally efficient, simple and practical, as is illustrated by numerical examples. In the furure, the method can be used for tuning the controller and for direct application construction of adaptive controllers, working on the identification principle.</p>

Robust Feedback Control of a Baffled Plate via Open-Loop Optimization

2001 ◽  
Vol 124 (1) ◽  
pp. 154-157 ◽  
Author(s):  
P. De Man ◽  
A. Franc¸ois ◽  
A. Preumont
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Transfer Function ◽  
Open Loop ◽  
Displacement Sensor ◽  
Search Procedure ◽  
Loop Optimization ◽  
Loop Transfer Function ◽  
Poles And Zeros ◽  
Siso System

A SISO control system is built by using a volume displacement sensor and a set of actuators driven in parallel with a single amplifier. The actuators location is optimized to achieve an open-loop transfer function which exhibits alternating poles and zeros, as for systems with collocated actuators and sensors; the search procedure uses a genetic algorithm. The ability of a simple lead compensator to control this SISO system is numerically demonstrated.

scholarly journals The Pilot Influence on the Flutter Velocity of the Lightweight Plane

2019 ◽  
Vol 304 ◽  
pp. 06004
Author(s):  
Tomáš Sommer ◽  
Pavel Steinbauer ◽  
Svatomír Slavík ◽  
Miloslav Vilímek ◽  
Aleš Kratochvíl
Keyword(s):  
Experimental Investigation ◽  
Control System ◽  
Transfer Function ◽  
Natural Frequency ◽  
Flight Control ◽  
Modal Parameters ◽  
Flight Control System ◽  
Modal Characteristics ◽  
Design And Testing

Flutter of the airplane is serious problem which is carefully investigated during design and testing both computationally and experimentally. The lightweight plane dynamics is however influenced by pilot, by his muscular transfer function. This study shortly describes results of experimental investigation of pilot's modal characteristics from 1 Hz up to 70 Hz. Next discusses the pilot influence on modal parameters of longitudinal flight control system of lightweight airplane. The change is aimed on the natural frequency and damping. This study also discusses the change of flutter velocity with dependence of new modal parameters influenced by pilot. Including a comparison with the current methodology - free and blocked longitudinal flight control system.

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