How many kinds of linear motors are there and what are they?
There are many types of linear motors including stepper, DC brushed and brushless servo, inductance and AC Synchronous. Only a few have been economically viable. Brushless DC (also known as AC Synchronous) linear motors have found the widest acceptance in industrial applications because of their superior performance in precision positioning applications. • How do I know which type is best for my application? If you have a typical precision positioning application, then the DC brushless servo motor is a logical choice. Brushed motors should not be used due to the problems associated with brush wear and heat generated at the interface. Stepper motors cannot be tuned to the load or position feedback easily applied. This limits them to very light loads, usually less than 20 lbs. The requirements that usually point to a linear motor are long life or number of cycles, high speed, very precise positioning, no wear, low noise, clean room or vacuum compatibility, and low maintenance. Induction
