Electric transmission control method of tilting of rotating furnace
A control method and electrical technology, applied in the direction of electrical program control, comprehensive factory control, comprehensive factory control, etc., to achieve the effect of simple and reliable system, high control accuracy and good torque balance
Inactive Publication Date: 2011-11-09
WISDRI ENG & RES INC LTD
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Problems solved by technology
At present, there are many schemes for controlling the tilting of the converter, and the commonly used one is a master-three-slave control mode, but there are some shortcomings such as poor torque balance and cumbersome master-slave switching.
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Embodiment Construction
[0028] Such as figure 1 As shown, the converter tilting electric drive control system includes a PLC (programmable logic controller) controller, multiple inverters and tilting speed encoders, which are connected by PROFIBUS-DP (distributed peripheral process field bus) bus Together. Each frequency converter controls its corresponding motor. Such as figure 2 As shown, the inverter can be a Siemens 6SE70 inverter, and the inverter is connected to the PROFIBUS-DP bus through the CBP2 communication board.
[0029] The control method of the above control system includes the following steps:
[0030] 1) Configure PROFIBUS-DP network, and then run the control system;
[0031] 2) The PLC controller sends the torque command value to the inverter through the speed regulator set by its internal program, and the inverter adjusts its corresponding motor according to the command;
[0032] 3) Tilting speed encoder detects the actual speed value of each motor and feeds it back to the inverter;
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The invention provides an electric transmission control method of tilting of a rotating furnace, comprising the following steps that: 1) a network is configured, and then a control system is operated; 2) a PLC controller sends a torque instruction value to frequency converters which then adjust motors corresponding thereto according to the instruction; 3) a tilting speed encoder detects actual speed values of all the motors and feedbacks the actual speed values to the frequency converters; 4) the frequency converters send the actual rotating speed and the torque values of all the motors by the network to the PLC controller, and the PLC controller judges that all the frequency converters are in normal state according to data; and 5) the PLC controller obtains a speed feedback value of the current system after analysis and operation, and then the PLC controller sends the torque instrument value to four frequency converters after calculation of a speed regulator of the PLC controller. The electric transmission control method leads transmission equipment to be in good working state, thus being capable of prolonging the service life of machines.
Description
technical field [0001] The invention relates to a converter tilting device for a steelmaking process in the metallurgical industry, in particular to an electric transmission control system for the converter tilting device. Background technique [0002] During the smelting operation of the converter tilting device, due to frequent starting, braking and acceleration and deceleration, it often produces severe torsional vibration and strong torsional vibration torque impact, which not only affects the mechanical life of the converter transmission equipment, but even causes equipment accidents. According to the process requirements, the tilting angle of the converter is ±360°, and the furnace mouth and bottom axis of the converter are in the zero state when they are perpendicular to the ground plane, so the furnace tilting load moment belongs to the negative negative potential energy load. When the furnace body is in the positive torque state, the motor is in the electric runnin...
Claims
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IPC IPC(8): C21C5/50G05B19/418
CPCY02P90/02
Inventor 苏瑞淼蔡炜陈泽望
Owner WISDRI ENG & RES INC LTD