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The d.c. linear motors due to their high working parameters at low speeds and the possibility of obtaining the required character of motion by means of simple control systems have found practical applications. As there has to be a difference in length between a stator and a moving part at a given running length, and when a constant interaction surface between them is maintained, generally, two basic kinds of d.c. linear motors can be distinguished: 1. motors with a field system that is shorter than an armature; 2. motors with a field system that is longer than an armature. The d.c. linear motors of the second type are discussed in the present paper. The d.c. homopolar linear motor with permanent magnets presented in this paper has a simple construction which ensures its highly reliable operation in reciprocating drive systems. The construction of the field system ensures low leakage flux which, practically, does not affect the environment of the drive system. As the growing length of the motor causes a corresponding increase in the mass of the field system, the running length of the motor in question should not exceed 0.5 m. The equivalent reluctance network method that has been applied to the determination of magnetic field distribution ensures sufficient design accuracy.