METHOD OF CALCULATION AND DESIGN OF DISCRETE ACTION ACTUATORS

Abstract

The article describes the use of thermobimetallic actuators of discrete action in the designs of modern electrical devices. It has been established that thermobimetallic actuators of discrete action are the responsible elements of these devices, as the functioning of the entire system depends on their operation. Thermobimetallic elements deform non-linearly, cracking when a critical temperature is reached. When analyzing the actuators, their operating characteristics are determined, that is, the dependence between the value characterizing the change in geometric shape and the ambient temperature. The task of analyzing a bimetallic actuator of discrete action is to determine its elastic characteristics, that is, the dependence between the movement of a characteristic point and a change in temperature, with known design parameters. A feature of this characteristic is a sudden change in the shape of the element when the critical temperature is reached. At the same time, the new operating point falls on the upper stable part of the characteristic, and upon cooling to the critical temperature, a reverse jump is realized. A method of numerical analysis and synthesis of thermobimetallic actuators of discrete action is proposed, which allows to improve existing and create new designs of actuators with given parameters.