Study of linear electric motor magnetic system of hand-held electrified tool

Abstract

In modern gardening, there are many technological processes that use hand tools. These processes account for about 40% of the labor costs in the process of gardening. In this regard, the cost of horticultural products increases, which affects their competitiveness in the market economy. The use of an electrified or mechanized tool will improve the production efficiency and reduce the cost of horticultural products. Currently, hydraulic and pneumatic drives are widely used. However, these drives have many disadvantages that lead to a decrease in the efficiency of the installations. Therefore, the electric drive is increasingly used. The existing electrified tool uses a DC motor as an electric drive. The most unreliable element of the motor is the brush mechanism. The use of a linear electric motor for the drive of the tool will increase its operational reliability and energy efficiency. This is possible due to the advantages of the linear electric drive, such as simplification of the mechanical part, increased speed and positioning accuracy of the electric motor armature. The proposed electric drive is characterized by low noise level and ease of maintenance. This stage in the development of a linear electric drive is characterized by a small range of tasks to be solved. The proposed design of a linear electric motor will allow, in general, to consolidate the possibility of its use in agricultural production, and in particular for a handheld electrified tool for caring for a garden. Modern design of electrical devices should use existing software systems for modeling magnetic systems. This will make it possible to more effectively solve the problem of increasing the efficiency of the magnetic system of the electric motor. To study the magnetic system of a linear electric motor, we use the ElCut program. The aim of the study is to optimize the magnetic system of the linear electric motor of a hand-held electrified tool. This will increase the force generated by the magnetic field acting on the armature. As a result of the research, the maximum value of the electromagnetic force reaches 53.7 N. In the further design of the power tool, it is necessary to correctly select the kinematic diagram for its effective operation.