Linear Motion Electric Machines

Linear motors are electric induction motors that produce motion in a straight line rather than rotational motion.

Linear motion electric machines.

A survey of linear motion electrical machines is presented. Where a conventional rotary motor is used to drive a load in a linear motion some kind of mechanism is required to transform the rotary motion of the motor shaft to the desired straight line motion. Although various types of dc and ac linear machines are briefly mentioned linear induction motors are the main concern of the paper and they are discussed in considerable detail. In a traditional electric motor the rotor rotating part spins inside the stator static part.

New linear motors the number of choices for converting electrical energy into linear motion recently increased. A rotary and linear motion device includes a magnetic stator assembly opposed electromagnetic actuators and a linear to rotary converter e g cam. Welcome the linear motor. The main purpose is to have a better control and a greater versatility in automations as well as a deep customization of the machine or the.

Linear motion electric actuator for control valve overview. The history of linear electric motors can be traced back at least as far as the 1840s to the work of charles wheatstone at king s college london but wheatstone s model was too inefficient to be practical. Linear motors directly produce the back and forth linear motion required by machine tools and many other applications. Based on topological considerations a classification of these.

A feasible linear induction motor is described in the u s. 3810l applicable to various movement transform and valve a manual adjustment valves with requirments with automatic locking self revised and diagnostic features also add a delay protect signal protection and fault alarm function widely applied in power metallurgy petrochemical industry light industry and environmental protection. Patent 782 312 1905 inventor alfred zehden of frankfurt am main for driving trains or lifts. The almost consolidated trend is to switch from hydraulic or pneumatic cylinders to electric linear actuators with particular reference to some industrial fields as packaging and automatic machines.

In a linear motor the stator is unwrapped and laid out flat and the rotor moves past it in a straight line. Linear motion electrical machines abstract.