Bang-Bang Versus Linear Control of a Second-Order Rate-Type ServomotorSource: Journal of Fluids Engineering:;1960:;volume( 082 ):;issue: 001::page 66Author:Philip F. Meyfarth
DOI: 10.1115/1.3662557Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simple nonlinear scheme for controlling a second-order rate-type servomotor is described. This scheme is referred to as “bang-bang” control since the input to the servomotor is made to “bang” from its maximum value in one direction to its maximum value in the other direction depending only on the sign of an error signal. This bang-bang system oscillates in a continuous high-frequency, low-amplitude limit cycle. The nature of this limit cycle is studied by the describing function approximation and by an exact method. The step and frequency response characteristics of the bang-bang system are discussed and compared with the characteristics of a simple linear system. It is shown that many aspects of the behavior of the bang-bang system can be predicted from rather simple considerations.
keyword(s): Servomotors , Cycles , Errors , Frequency response , Function approximation , Linear systems AND Signals ,
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| contributor author | Philip F. Meyfarth | |
| date accessioned | 2017-05-08T23:55:19Z | |
| date available | 2017-05-08T23:55:19Z | |
| date copyright | March, 1960 | |
| date issued | 1960 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27220#66_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/119722 | |
| description abstract | A simple nonlinear scheme for controlling a second-order rate-type servomotor is described. This scheme is referred to as “bang-bang” control since the input to the servomotor is made to “bang” from its maximum value in one direction to its maximum value in the other direction depending only on the sign of an error signal. This bang-bang system oscillates in a continuous high-frequency, low-amplitude limit cycle. The nature of this limit cycle is studied by the describing function approximation and by an exact method. The step and frequency response characteristics of the bang-bang system are discussed and compared with the characteristics of a simple linear system. It is shown that many aspects of the behavior of the bang-bang system can be predicted from rather simple considerations. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Bang-Bang Versus Linear Control of a Second-Order Rate-Type Servomotor | |
| type | Journal Paper | |
| journal volume | 82 | |
| journal issue | 1 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3662557 | |
| journal fristpage | 66 | |
| journal lastpage | 72 | |
| identifier eissn | 1528-901X | |
| keywords | Servomotors | |
| keywords | Cycles | |
| keywords | Errors | |
| keywords | Frequency response | |
| keywords | Function approximation | |
| keywords | Linear systems AND Signals | |
| tree | Journal of Fluids Engineering:;1960:;volume( 082 ):;issue: 001 | |
| contenttype | Fulltext |