摘要
The actuating mechanism of a manometer is to magnify and transform the small displacement generated by elastic components, and then the pressure value is indicated by the deflection angle of the pointer. The error between the indicated and actual pressure value can be large without giving sufficient consideration to the displacement of the elastic component and the inherent non-linearity of a actuating mechanism in its traditional design. In this paper, in order to increase the accuracy and rationality of transmission, the elastic component and transmission non-linearity is fitted and the mathematical models are constructed based on centre displacement of elastic instru- ment components. An optimum program is compiled by MATIABS. O, the optimal parameters to compensate the non- linear displacement of a crank link in two groups to spring is obtained. The error analysis of the manometer shows that it is an efficient method to reduce the errors caused by the elastic components and the non-liner characteristic of actuating a mechanism through the optimized design.
The actuating mechanism of a manometer is to magnify and transform the small displacement generated by elastic components, and then the pressure value is indicated by the deflection angle of the pointer. The error between the indicated and actual pressure value can be large without giving sufficient consideration to the displacement of the elastic component and the inherent non-linearity of a actuating mechanism in its traditional design. In this paper, in order to increase the accuracy and rationality of transmission, the elastic component and transmission non-linearity is fitted and the mathematical models are constructed based on centre displacement of elastic instru- ment components. An optimum program is compiled by MATIABS. O, the optimal parameters to compensate the non- linear displacement of a crank link in two groups to spring is obtained. The error analysis of the manometer shows that it is an efficient method to reduce the errors caused by the elastic components and the non-liner characteristic of actuating a mechanism through the optimized design.
