How to eliminate the oscillation problem of the combined machine tool has always been the focus of attention. In order to reduce the impact of the combination machine tool oscillation, the following four measures must be taken to avoid:
1. Decrease the position loop gain. In the servo system, there is a reference standard value, and the oscillation can be properly reduced, but it cannot be reduced too much, because the system's steady-state error must be guaranteed.
2. Reduce the load inertia ratio. The load inertia ratio is generally set at about 70% of the parameter shown when the vibration occurs. If the failure cannot be eliminated, it should not be continued to reduce the parameter value.
3, the oscillation caused by the closed-loop servo system. Some combined servo systems use a semi-closed loop device, and the full closed loop servo system must perform parameter adjustment under the premise that the local semi-closed loop system does not oscillate, so the two are similar.
4. Add a proportional microintegrator. The proportional micro-integrator is a multi-function controller, which not only can effectively perform proportional gain on the current and voltage signals, but also can adjust the output signal to lag into a leading problem.
However, for the high-frequency oscillation of the combined machine tool, a first-order low-pass filter link can be added to the speed loop, that is, a torque filter to alleviate this phenomenon.
1. Decrease the position loop gain. In the servo system, there is a reference standard value, and the oscillation can be properly reduced, but it cannot be reduced too much, because the system's steady-state error must be guaranteed.
2. Reduce the load inertia ratio. The load inertia ratio is generally set at about 70% of the parameter shown when the vibration occurs. If the failure cannot be eliminated, it should not be continued to reduce the parameter value.
3, the oscillation caused by the closed-loop servo system. Some combined servo systems use a semi-closed loop device, and the full closed loop servo system must perform parameter adjustment under the premise that the local semi-closed loop system does not oscillate, so the two are similar.
4. Add a proportional microintegrator. The proportional micro-integrator is a multi-function controller, which not only can effectively perform proportional gain on the current and voltage signals, but also can adjust the output signal to lag into a leading problem.
However, for the high-frequency oscillation of the combined machine tool, a first-order low-pass filter link can be added to the speed loop, that is, a torque filter to alleviate this phenomenon.
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