| MATLAB is by the plural number matrix took the basic programming unit one kind of senior programming language, mainly is suitable for the matrix operation and the control and the information processing domain analysis design, it very easily voluntarily expands moreover the collection science and the engineering calculation, graph can see to turn, the imagery processing, multimedia processing by the user in a body, and has provided the practical Windows graphical interface design method, enables the user to design the friendly graphical interface. SIMULINK is the MATLAB software expansion, it mainly uses in the dynamic system simulation. Has also joined many MATLAB function in SIMULINK. As a result of its formidable simulation function, MATLAB adjusts in the automatic control system the application development to be more and more quick at present.MATLAB is the abbreviation of MATrix LABoratory ("matrix laboratory"), It is the collection value computation, the mark computation and the graph can see to turn three big basic functions which develops by American MathWorks Corporation in a body, the function is formidable, the operation simple language. It is one of internationally recognized outstanding mathematics application software.The 1980s initial period, Cleve Moler and John Little and so on developed the new generation of MATLAB language using the C language, this time MATLAB language at the same time has had the value computation function and the simple graph processing function. In 1984, Cleve Moler and John Little and so on had been established Mathworks Corporation officially, pushes to the MATLAB language the market, and started to the MATLAB toolbox and so on the development design. In 1993, Mathworks Corporation has promoted based on the personal computer MATLAB 4.0 editions, it has promoted MATLAB to in 1997 5.X edition (Release 11), and has promoted the newest MATLAB 6 editions in 2000 (Release 12).Now, MATLAB already developed into suits the multi-disciplinary large-scale software, in the world various universities, MATLAB already became advanced course the and so on the linear algebra, numerical analysis, mathematical statistic, optimized method, automatic control, digital signal processing, dynamic system simulation basic teaching tool. Specially recently several years, MATLAB in our country university student mathematics modeling competition application, for the participant in the limited time accurate, effective solved the problem to provide the powerful guarantee.Broadly speaking, entire MATLAB system is composed by two parts, namely the MATLAB essence and the assistance toolbox, two transfers constituted the MATLAB formidable function. The MATLAB language take the array as the master data unit, flows the sentence, the function, the construction of data, the input output including the control and is object-oriented and so on the characteristic higher order language below, it has the main characteristic:(1)the programming efficiency is high, MATLAB except provides with the C language same operator extra, but also provides the widespread matrix and the vector operator. May cause its procedure using its operative symbol and the storehouse function to be quite brief, 23 lines of sentences may realize several dozens line of even several hundred line of C or the FORTRAN procedure function.(2) It both has structurize the control sentence (for example the for circulation, the while circulation, the break sentence, the if sentence and the switch sentence), and has the object-oriented programming characteristic.(3) the graph function is formidable. It already includes to two-dimensional and three dimensional data can see to turn, the imagery processing, the animation manufacture contour level cartography order, also includes may revise the graph and the establishment complete graphical interface, the low level cartography order.(4) function formidable toolbox. The toolbox may divide into two kinds: function toolbox and discipline toolbox. function the toolbox mainly uses for to expand its mark computation function, the graphical representation modeling simulation function, the language processing function as well as with the hardware real-time interactive function. But the discipline toolbox is the specialization quite strong, like optimizes the toolbox, counts the toolbox, controls the toolbox, the wavelet toolbox, the imagery processing toolbox, the correspondence toolbox and so on.(5) It is easy to expand. Besides the built-in function, all MATLAB core document and the toolbox document all are the source document which may read may change, the user may revise the source document and join own document, they may transfer equally with the storehouse function.In the automatic control technology adjustment partial flexibilities are big, in order to satisfy the similar performance index, may adopt the different adjustment method. This article from active, passive, series connected, is parallel and so on the aspect showed separately, and emphasized the proportion to adjust, the proportion differential adjusts (leading of phase to adjust), the proportion differential adjusts (lagging of phase to adjust), the proportion differential - integral adjusts (leading of phase - correction for lag) several commonly used series adjustments way. Separately from aspect and so on modeling, programming, result analysis and comparison has carried on the extremely detailed analysis. The establishment transfer function and obtains the adjustment result and the graph all can manifest in the article.Adjusts take the MATLAB language in the low power position servo system the application as the example, has established the quite reasonable mathematical model. Has contrasted around the adjustment Bode chart curve, thus enables before adjustment not positive the target to be able to improve. After may see the adjustment the systematic each time domain performance index and the frequency range performance index can achieve in the industry the request. Has confirmed the realization automatic control system adjustment by this which MATLAB may facilitate. |
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