An alternative gearing method is to synchronize the slave motor to the commanded vector motion of several axes
performed by GAS. For example, if the X and Y motor form a circular motion, the Z axis may move in proportion
to the vector move. Similarly, if X,Y and Z perform a linear interpolation move, W can be geared to the vector
move.
Electronic gearing allows the geared motor to perform a second independent or coordinated move in addition to the
gearing. For example, when a geared motor follows a master at a ratio of 1:1, it may be advanced an additional
distance with PR, or JG, commands, or VP, or LI.
Ramped Gearing
In some applications, especially when the master is traveling at high speeds, it is desirable to have the gear ratio
ramp gradually to minimize large changes in velocity on the slave axis when the gearing is engaged. For example if
the master axis is already traveling at 1,000,000 cts/sec and the slave will be geared at a ratio of 1:1 when the
gearing is engaged, the slave will instantly develop following error, and command maximum current to the motor.
This can be a large shock to the system. For many applications it is acceptable to slowly ramp the engagement of
gearing over a greater time frame. Galil allows the user to specify an interval of the master axis over which the
gearing will be engaged. For example, the same master X axis in this case travels at 1,000,000 counts/sec, and the
gear ratio is 1:1, but the gearing is slowly engaged over 30,000 cts of the master axis, greatly diminishing the initial
shock to the slave axis. Figure 6.10 below shows the velocity vs. time profile for instantaneous gearing. Figure 6.11
shows the velocity vs. time profile for the gradual gearing engagement.
Figure 6.10: Velocity cts/sec vs. Time (msec) Instantaneous Gearing
Engagement
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Chapter 6 Programming Motion
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Содержание DMC-4040
Страница 17: ...DMC 4080 Layout Figure 2 2 Outline of the of the DMC 4080 DMC 40x0 User Manual Chapter 2 Getting Started 8...
Страница 19: ...DMC 4040 Dimensions Figure 2 5 Dimensions of DMC 4040 DMC 40x0 User Manual Chapter 2 Getting Started 10...
Страница 20: ...DMC 4080 Dimensions Figure 2 6 Dimensions of DMC 4080 Chapter 2 Getting Started 11 DMC 40x0 User Manual...
Страница 54: ...Chapter 3 Connecting Hardware 45 DMC 40x0 User Manual...
Страница 55: ...DMC 40x0 User Manual Chapter 3 Connecting Hardware 46...
Страница 56: ...Chapter 3 Connecting Hardware 47 DMC 40x0 User Manual...
Страница 73: ...Figure 4 1 GalilTools DMC 40x0 User Manual Chapter 4 Software Tools and Communication 64...
Страница 185: ...THIS PAGE LEFT BLANK INTENTIONALLY DMC 40x0 User Manual Chapter 7 Application Programming 176...
Страница 205: ...THIS PAGE LEFT BLANK INTENTIONALLY DMC 40x0 User Manual Chapter 10 Theory of Operation 196...
Страница 220: ...Step 2 Remove ICM For DMC 4040 Proceed to Step 3 Configure Circuit Appendices 211 DMC 40x0 User Manual...
Страница 222: ...Step 2 Remove ICM s Appendices 213 DMC 40x0 User Manual...
Страница 232: ...DMC 4080 Steps 4 and 5 Step 4 Replace ICM s Appendices 223 DMC 40x0 User Manual...