Compound Fault Diagnosis of Bearings Using an Improved Spectral Kurtosis by MCDK

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:6.85em"/><col style="width:9.08em"/><col style="width:10.06em"/><col style="width:10.78em"/><col style="width:9.28em"/><col style="width:9.04em"/></colgroup><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Amplitude <br/><svg height="11.927pt" id="M65" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 15.3285 11.927" width="15.3285pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path></g><g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"><path d="M245 635C92 635 37 457 37 312C37 149 91 -12 244 -12C395 -12 449 166 449 312C449 469 395 635 245 635ZM243 598C332 598 358 454 358 312C358 173 334 26 245 26C158 26 128 174 128 313S152 598 243 598Z" id="g50-49"></path></g></svg></td><td class="align_center">Rotating frequency<br/><svg height="12.7178pt" id="M66" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 11.2442 12.7178" width="11.2442pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M619 670C619 686 593 712 555 712S459 686 410 634S335 504 320 430H250L219 400L222 388H312L258 73C223 -133 201 -166 187 -180C175 -191 158 -199 140 -199C123 -199 88 -188 74 -172C68 -166 63 -164 54 -171C38 -185 23 -201 23 -215C23 -236 60 -261 93 -261C122 -261 161 -247 207 -200C268 -138 300 -71 337 94C365 220 376 277 394 387L501 399L521 430H401C432 623 464 665 501 665C524 665 544 651 567 627C577 617 583 618 592 625C601 631 619 651 619 670Z" id="g113-103"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.721,3.132)"><path d="M397 380C406 395 404 411 396 425S369 451 350 451C302 451 239 372 192 294H189L199 338C214 407 207 451 180 451C152 451 83 405 30 345L48 318C87 354 117 372 125 372S135 362 127 324L55 -5L61 -12C87 -5 117 3 139 5C154 87 168 162 179 207C198 250 240 310 260 332C281 355 297 366 307 366C321 366 333 360 347 346C351 342 360 342 369 348C379 355 389 366 397 380Z" id="g50-115"></path></g></svg>/Hz</td><td class="align_center">Natural frequency/Hz</td><td class="align_center">Sampling frequency/Hz</td><td class="align_center">Sampling points/Hz</td><td class="align_center">Fault frequency/Hz</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">2</td><td class="align_center">20</td><td class="align_center">1600</td><td class="align_center">8192</td><td class="align_center">8192</td><td class="align_center">50</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The parameters of the outer ring fault simulation signal.</div>

Mathematical Problems in Engineering

tab2

Table 2

Table 2: Compound Fault Diagnosis of Bearings Using an Improved Spectral Kurtosis by MCDK 