Determining the Power Consumption of the Automatic Device for Belt Perforation Based on the Dynamic Model

The subject of the dynamic analysis presented in the article is the linear drive system with a timing belt utilized in the automatic device for polymer composite belt perforation. The analysis was carried out in two stages. In the first stage, the timing belt was modeled with all the relevant dynamic phenomena; subsequently, the tension force of the belt required for the correct operation of the belt transmission was determined. The necessary parameters for belt elasticity, vibration damping, and inertia are based exclusively on the catalog data provided by the manufacturer. During the second stage, equations of motion were derived for the designed drive system with a timing belt, and characteristics were identified to facilitate the optimal selection of electromechanical drives for the construction solution under analysis. The presented methodology allows for designing an effective solution that may be adapted for other constructions. The obtained results showed the influence of the kinematic parameters on the motor torque and proved the importance of reducing the mass of the components in machines that perform high-speed processes.

Bristle Motion, Forces, and Related Vertical Translation for a Novel Electric Toothbrush Design

This paper presents a combination of theoretical and experimental techniques applied to characterize the bristle motion, forces, and related vertical translation for a novel electric toothbrush design with a linear drive system. Results of the theoretical description, based on a single filament, were successfully compared with laboratory-based investigations: force measurements and high-speed video analysis, and tracking the toothbrush motion. This work describes the vertical translation induced in the toothbrush head, of up to 250 μm, when the toothbrush bristles are applied against a contact surface at brushing loads of approximately 1 N to 2.5 N. Using these techniques, including Fast-Fourier transform analysis, it is shown that the vertical motion of the head is composed of the driving frequency and its harmonics.

Energy Comparisons of the Adaptive Tracking Control for a Linear Drive System

In this paper, a mechatronic motor-table system is realized to plan the minimum input electrical energy trajectory (MIEET) based on Hamiltonian function. In this system, the adaptive tracking controller is designed to track the MIEET to overcome the nonlinear friction and external disturbance. Moreover, trapezoidal trajectory (TT) and regulator control are compared with the MIEET by the adaptive tracking controller. Finally, it is concluded that the MIEET based on the adaptive tracking controller can obtain the minimum input electrical energy and robustness performance for the mechatronic motor table system.

Adaptive Sliding Mode Control of the Linear Drive System

An adaptive sliding mode controller (ASMC) is designed for the linear drive system. The control law is expressed as a function of the disturbance which is predicted from the motor current and the active damping of the measured structural modes. Accurate prediction of the disturbance is used to actively compensate the low frequency machine tool structural modes which are within the control bandwidth. Compared with the cascaded controller (CC), the designed ASMC not only has greater control bandwidth, stronger anti-disturbance and robustness, but also improves the dynamic stiffness of the linear drive system significantly.