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Teoria de Maquinas y Mecanismo - Shigley

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238 TEORÍA DE MÁQUINAS Y MECANISMOS<br />

y ' = [18.292 65(*r -103.902 OO(*r + 160.389 30(*r<br />

- 95.267 55(*r + 20.487 60(*YJ<br />

y 2[ " = 36.585 30(*) -415.608 OO(y + 801.946 50(*r<br />

-571.605 30(*Y + 143.413 20(*YJ<br />

y [ lll = 36.585 30 1246.824 OO(*r + 3207.786 00(*/<br />

2858.026 50(*r + 860.479 20(*YJ<br />

(6-35b)<br />

(6-35c)<br />

(6-35d)<br />

Para los movimientos polinomiales <strong>de</strong> octavo or<strong>de</strong>n <strong>de</strong> retorno completo <strong>de</strong> la<br />

figura 6-28, las ecuaciones son<br />

y L[ = 1.000 00 - 2.634 15(*r + 2.780 55(y<br />

+3.170 60(r -6.877 95(y +2.560 95(r]<br />

y ' = -[5.268 30*-13.902 75(r -19.023 6O(y<br />

+48.145 65(*r -20.487 60(YJ<br />

(6-36a)<br />

(6-36b)<br />

y - " 2 = [5.268 30 -55.611 OO(r 95.118 00() 4<br />

y<br />

+ 288.873 9O(y -143.413 20(rJ<br />

3[ 166.833 OO(r + 380.472 OO(y<br />

1444.369 50(*r + 860.479 20(*YJ<br />

(6-36c)<br />

(6-36d)<br />

También son <strong>de</strong> uso común ecuaciones polinomiales <strong>de</strong> <strong>de</strong>splazamiento <strong>de</strong> un<br />

or<strong>de</strong>n mucho más elevado y que satisfacen muchas más condiciones que las aquí<br />

presentadas. Stoddartt <strong>de</strong>sarrolló procedimientos automatizados para <strong>de</strong>terminar<br />

t D.A. Stoddart, "Polydyne Carn Design", Mach. Des., vol. 25, no. 1, pp. 121-135; vol. 25,<br />

no. 2, pp. 146-154; vol. 25, no. 3, pp. 149-164, 1953.

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