Design and Sensitive Analysis of Incremental Linear Actuator

Abstract: This paper presents a novel single-sided linear actuator design and sensitivity analysis of different geometric parameters on the performances of the actuator. A numerical model based on the finite element method is developed for that purpose. Thus, the electromagnetic behavior of the actuator is analyzed with 2D magneto-static analysis, and the electromagnetic characteristics were presented with the study of the effect of different geometric parameters on the thrust force. Indeed, the magnetic flux distribution and the force profile are presented and discussed. The analysis of different parameters on the actuator's performance allows the selection of the appropriate values of these parameters to obtain optimal performance of the actuator. The analysis shows the air gap and stack length has a powerful influence on the actuator's performance. Furthermore, the increase of supply current has a significant effect, but a high level of Ampere turns to bring the magnetic circuit to the saturation zone. It is important to determine the optimal geometrical dimensions to reduce the mass of the motor. It is critical to choose the optimum power values for the actuator to obtain optimum performance and avoid exceeding operating limits. Background: The linear switched reluctance motor is used in many industrial applications such as the linear motion of machine tools, sliding door applications, and conveyors. Objective: A new design approach for a linear switched reluctance motor is developed in order to determine the geometric parameters of the structure. Methods: Finite element method is used to predict the characteristics of the motor and the analysis its performances. Results: The simulation results obtained by finite element analysis make it possible to study the electromagnetic behavior of the motor and to validate the established geometric model. Conclusion: The study was carried out to choose the optimal parameters in order to obtain optimal performance and avoid exceeding the operating limits of the motor.