Roller way positioning method for preventing roller way slide carriage
A positioning method and roller table technology, applied in electrical components, control systems, AC motor control, etc., can solve problems such as affecting the quality of steel plates, wrong marking positions, uneven roller planes, etc., to increase benefits, prevent slippage, The effect of improving the quality of the steel plate
Active Publication Date: 2019-11-22
NANJING IRON & STEEL CO LTD
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Problems solved by technology
The observation and analysis is that after the steel plate arrives at the designated position and stops, due to its own inertia, coupled with the long-term wear of the roller table, the roller plane is uneven, and the steel plate slides and shakes on the roller table, resulting in the wrong marking position and affecting the quality of the steel plate
The best way to solve this problem is to replace worn rollers or add motor brakes, but since there are as many as 54 rollers in this area, adding brakes and replacing rollers cannot be implemented in a short period of time, which requires the PLC upper Machine control and roller table frequency converter are improved in control accuracy and control mode
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[0012] This embodiment provides a method for positioning rollers to prevent roller slides, involving the IR compensation function of ABB ACS800 multi-transmission inverters, such as figure 1 Shown, including
[0013] Inverter IR compensation is 0 speed compensation: when the motor is at 0 speed, the motor's magnetic flux is adjusted by supplying the motor's output voltage of 5%-10% of the rated voltage to meet the application of 0 speed and high starting torque; After the steel plate reaches the specified position, it stops at 0 speed. In the case of uninterrupted power supply, the inverter provides a compensation voltage of 5%-10% relative to the rated voltage for the motor to increase the motor flux and excitation current to ensure 0 speed torque; tracking model optimization: the deceleration time is the time it takes for the motor to decelerate from the highest speed to 0 speed. Theoretically, the shorter the deceleration time, the better, but the shorter the time, the greater...
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The invention discloses a roller way positioning method for preventing a roller way slide carriage, and relates to the technical field of steel plate conveying roller way equipment. The method comprises the steps of frequency converter IR compensation, namely zero-speed compensation, tracking model optimization, testing and implementation. By adding the zero-speed IR compensation of the frequencyconverter, combining with the adjustment of acceleration and deceleration time between an upper computer and the frequency converter, optimizing a tracking model, accurately positioning the roller wayand preventing the roller way from slipping, the problem of steel plate identification dislocation is solved, the steel plate can be prevented from being scratched, the steel plate quality is improved, the fault time is shortened, the production efficiency is improved, and thus the benefits are increased.
Description
Technical field [0001] The invention relates to the technical field of steel plate conveying roller table equipment, in particular to a roller table positioning method for preventing a roller table slippery. Background technique [0002] At present, most of the steel mill material transfer rollers are controlled by frequency converters. In the field of medium and heavy plates, due to objective reasons such as heavier and larger plates, the roller table is more difficult to control during the process of conveying steel plates. In the marking process after the cutting is completed in the wide and heavy plate factory, the marking position is often wrong. The observation and analysis is that after the steel plate reaches the designated position and stops, due to its own inertia, coupled with the long-term wear of the roller table, the roller plane is uneven, and the steel plate slides and shakes on the roller table, which causes the marking position error and affects the quality of ...
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IPC IPC(8): H02P27/04
CPCH02P27/04
Inventor 潘翔
Owner NANJING IRON & STEEL CO LTD