Contact Us. Search by Item Number. Content Slide. BLE series. CC-Link Ver. RS communication type. Position control mode. BLH series. Digital setting type. The four LTI objects encapsulate the model data and enable you to manipulate linear systems as single entities rather than as collections of vectors or matrices.
To see what LTI objects contain, use the get command. You can manipulate the data contained in LTI objects using the set command; see the Control System Toolbox online reference pages for descriptions of set and get. Another convenient way to set or retrieve LTI model properties is to access them directly using dot notation.
For example, if you want to access the value of the A matrix, instead of using get , you can type. This notation returns the A matrix. Similarly, if you want to change the values of the A matrix, you can do so directly, as this code shows.
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location. Toggle Main Navigation. Search MathWorks. Open Mobile Search. Electrical resistance shares some conceptual parallels with the mechanical notion of friction. Thus the turn insulation is critical to the life of a motor.
Low voltage tests on form-wound stators, such as inductance or inductive impedance tests, can detect if the turn insulation is shorted, but not if it is weakened. Only the surge voltage test is able to directly find stator windings with deteriorated turn insulation. By applying a high voltage surge between the turns, this test is an overvoltage test for the turn insulation, and may fail the insulation, requiring bypassing of the failed coil, replacement or rewind.
Electric Machine Parameter and Testing — Part 5 Partial Discharge Test IEC TS For many years, the measurement of partial discharges PD has been employed as a sensitive means of assessing the quality of new insulation as well as a means of detecting localized sources of PD in used electrical winding insulation arising from operational stresses in service. Compared with other dielectric tests i. The PD testing of rotating machines is also used when inspecting the quality of new assembled and finished stator windings, new winding components and fully impregnated stators.
The measurement of partial discharges can also provide information on: points of weakness in the insulation system; ageing processes; further measures and intervals between overhauls. Although the PD testing of rotating machines has gained widespread acceptance, it has emerged from several studies that not only are there many different methods of measurement in existence but also the criteria and methods of analyzing and finally assessing the measured data are often very different and not really comparable.
Consequently, there is an urgent need to give some guidance to those users who are considering the use of PD measurements to assess the condition of their insulation systems. Please give us your feedback on this feature. Narrow Results Clear All. You've selected:. Motors Motors are the power transmission workhorse of industry, converting electrical energy into mechanical movement. AC Motors - General Purpose. AC Motors - Definite Purpose.
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