How to eliminate oscillation problems on combination machines?
Release Date：2020-05-26 16:51:22 Number of visits：569
How to eliminate the problem of oscillation of combined machine tools has been the focus of attention, in order to reduce the impact of oscillation of combined machine tools, you need to take the following four major measures to avoid:
1, reduce the position loop gain. In the servo system has a reference to the standard value, oscillation can be appropriate to reduce the gain, but can not be reduced too much, because to ensure that the system''s steady-state error.
2, reduce the load inertia ratio. Load inertia ratio is generally set at about 70% of the parameters shown in the occurrence of vibration, such as the failure can not be eliminated, it is not appropriate to continue to reduce the parameter value.
3, closed-loop servo system caused by oscillation. Some combination of servo systems using a semi-closed-loop device, while the full closed-loop servo system must be in its local semi-closed-loop system does not oscillate under the premise of parameter adjustment, so the two are much the same.
4, join the proportional calculus. Proportional calculus is a multi-functional controller, it is not only effective on the current and voltage signals for proportional gain, while regulating the output signal hysteresis into the problem of overrun.
However, for the combination of high-frequency oscillation of the machine tool, the speed loop can be added to the first-order low-pass filtering link, that is, for the torque filter to alleviate this phenomenon.
