Comparison and analysis of linear motors and traditional motors

With the progress and development of science and technology, a new type of motor has appeared in recent years: linear motor. Compared with traditional motors, linear motors have many characteristics that are more suitable for modernization requirements: high precision, fast response, etc., and linear motors have also become hot-selling products in the motor market and are widely used in people's daily lives. So, what is the difference between linear motors and traditional motors? (1) Linear motor 1. The concept of linear motor Linear motor, also known as linear motor, linear motor, linear motor, push rod motor, etc., the most commonly used linear motors have these three types: flat plate, U-slot and tube formula. Three-phase is typical of linear motor coils, and there are Hall elements to achieve brushless commutation. 2. The advantages and disadvantages of linear motors As a modern high-tech product, linear motors have outstanding advantages: simple structure, high operating acceleration, high utilization rate of primary winding, strong adaptability, suitable for linear motion, not only easy to adjust and control, but also There is no lateral edge effect, and it can overcome the problem of unilateral magnetic pulling force. With linear motors, unilateral magnetic force is basically no problem. Therefore, the linear motor may meet the needs of different situations, is light and portable, and provides convenience for people. The so-called no one is perfect, no gold is pure, no matter how good a linear motor is, it will eventually have its shortcomings. Linear motors have high technical requirements, so the price is slightly higher than other motors; the same platform has a smaller volume thrust and is difficult to apply. (2) Traditional motor 1. The concept of traditional motor Traditional motor, also known as rotary motor, rotary motor. There are many types of it. According to its function, it can be divided into generators and motors. According to the nature of voltage, it can be divided into DC motors and AC motors. According to the structure, it can be divided into synchronous motors and asynchronous motors. Its working form is generally single instruction continuous work. 2. The advantages and disadvantages of traditional motors Traditional motors have the advantages of simple structure, convenient manufacturing, low price, and reliable operation. Although they can basically only execute a single continuous work command, they are widely used in various motors and have a large demand. Its biggest shortcoming is that it is large in size, executes more but the instructions work continuously, and the program is too rigid. (3) The similarities and differences between the two 1. The working principle is basically the same. Although linear motors are more suitable for modern technical requirements, the working principles of linear motors and rotary motors are basically the same. As shown in the figure, the rotary motor can be regarded as a linear motor after cutting from the surface to the flat shaft center. 2. Comparing characteristics of linear motor and rotary motor Compared with rotary motor, linear motor has the following characteristics: small size, precise positioning, fast response speed, high sensitivity, good followability, and long life. The most obvious difference between linear motors and rotary motors is the edge effect. The edge effect will produce some complicated phenomena. The longitudinal edge effect will deteriorate the working performance of the motor, and it will have a more serious impact on the high-speed and low-slip motor. Therefore, the motor design requirements are relatively strict.