Linear motors
The above description of the commutation process applies equally to rotary motors and to linear motors. Depending on the construction, there are merely some differences of nomenclature (e.g. motor shaft (rotor) = primary part; "degree" = "mm" (conversion is needed))
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Warning, risk of injury from uncontrolled movements! The primary part is moved in steps during "wake&shake". In Phase 1 the maximum electrical movement is 8 x (the value from "P-0-0-0165_Fist phase position monitoring limit"). In Phase 2 it is 0.5 x (the value from "P-0-0-0165_Fist phase step width"). This formula can only be applied if the previous investigation of stability has been concluded satisfactorily. Make sure that your application permits this movement, secure the surroundings to prevent unintentional entry, and make sure that nobody is in the hazardous area. |
Linear motors consist of a secondary assembly, whose position is fixed, onto which permanent magnets are attached with alternating polarity and regular spacing. A primary assembly can undergo translatory movement above this magnetic field. This movement is created by generating an electromagnetic field in the primary assembly. Linear motors always have only one pair of poles, and the distance between the poles therefore corresponds to one electrical rotation.
The "Electronic Commutation" section above can be applied to linear motors.