Editing Configuring linear servo motor
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− | [[File: | + | [[File:Linearencoder.jpg|thumbnail|A typical sealed linear encoder]] |
− | [[File: | + | [[File:Linearservo cutaway.jpg|thumbnail|Ironless linear motor cross-section]] |
− | + | Linear servo motor is an actuator producing linear force or motion and is constructed from a linear motor and a linear feedback device such as linear encoder. | |
− | Linear servo motor is an actuator producing linear force or motion and is constructed from a linear motor and a linear feedback device such as linear encoder | + | |
Linear servo motor is electrically equivalent to a rotary motor, so drive sees no difference between the two. However, as drive parameters are entered for rotary motor only, they need some calculations to suit for linear motor. | Linear servo motor is electrically equivalent to a rotary motor, so drive sees no difference between the two. However, as drive parameters are entered for rotary motor only, they need some calculations to suit for linear motor. | ||
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===Preparations=== | ===Preparations=== | ||
Needed parameters of linear motor: | Needed parameters of linear motor: | ||
− | *Magnetic pole | + | *Magnetic pole pitch (or pole pair pitch) |
*Forcer winding specifications: | *Forcer winding specifications: | ||
**Maximum currents: continuous and peak | **Maximum currents: continuous and peak | ||
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Needed linear feedback device parameters: | Needed linear feedback device parameters: | ||
*Resolution (lines or pulses per millimeter) | *Resolution (lines or pulses per millimeter) | ||
− | + | ===Conversion of parameters=== | |
− | + | In this step we convert the values so that motor can be driven from a servo drive. The drive is made to believe that the linear motor is rotary motor, so we need to figure out the equivalent rotary motor parameters. This example works with [[Granity]] software. | |
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− | In this step we convert the values so that motor can be driven from a servo drive. The drive is made to believe that the linear motor is rotary motor, so we need to figure out the equivalent rotary motor parameters. | + | |
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− | This example works with [[Granity]] software. | + | |
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