The mathematical model of a stand measuring the torque of the termobimetal actuators

Evaluation the torque generated by the actuator systems is a problem in that the forces obtained have small values. The experimental stands used to evaluate the performance of an actuator must allow an easy adjustment of the measuring equipment to the characteristics of the tested system. The paper presents the mathematical model of a quadrilateral mechanism used in a stand designed to measure the torque of a thermo-bimetallic actuator. The accurate evaluation of geometry of the force transmission mechanism allows the improvement of measurement accuracy for low and very low values obtained in the first part of the use of the actuator.