| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve an estimate accuracy of a front-back force, a lateral force, and a vertical force applied to a tire. <P>SOLUTION: First strain sensors of which gain maximum lines N are 30-60°and second strain sensors of which maximum lines orient to a tire diameter direction line, are alternately attached to a side with equal intervals therebetween, and, to the another side, strain sensors are attached symmetrically. Three force components Fx, Fy and Fz are estimated by following formulae in which a sum (ΣVA1+ΣVB1) of a total sumΣVA1 of the sensor outputs of the first strain sensors on the side and a total sumΣVB1 of outputs of the first strain sensors on the another side, a difference of (ΣVA1-ΣVB1) of these total sumsΣVA1 andΣVB1, and a sum (ΣVA2+ΣVB2) of a total sumΣVA2 of the sensor outputs of the second strain sensors on the side and a total sumΣVB2 of the sensor outputs of the second strain sensors on the another side are variable: (1) Fx=Kx×(ΣVA1+ΣVB1)+Ax; (2) Fy=Ky×(ΣVA1-ΣVB1)+Ay; and (3) Fz=Kz×(ΣVA2+ΣVB2)+Az, wherein Kx, Ky, Kz, Ax, Ay and Az in the formulae are constants. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
