The Design And Development Of The Analog Control System Of Annealing Temperature In Continuous Copper Wire

It was likely to be a vital significance of improving the property of cables whenannealed, which eliminated the remaining stress in the tissues of stretched cables so thatthe structure could be reformed and integrating function be ameliorated. Here went the keyto annealing of cables, which was maintaining the temperature of cables to an optimizedone.The typical method came that annealing temperature could be indirectly controlled byadjusting the annealing voltage, while the velocity of the cables as a specified value set inthe control system of annealing temperature. However, owing to other factors, thetemperature might also change even if the velocity kept constant. It was quite difficult toalter annealing temperature by accommodating the annealing voltage in time, becausetraditional control system was unable to follow up the changes of temperature.The thesis acquired the equivalent relationship between the velocity of cables andannealing temperature through deduction, based on the measurement of the annealingtemperature. A controller characterizing annealing temperature could be inserted beforethe traditional PI annealing controller, so that annealing temperature could be controlledwhile the deviation of the annealing temperature was simulated by the error of the velocityof cables. According to the actual problem, under the condition of preciseness, a kind ofanalog circuit was chosen to achieve the equivalent relationship between the velocity ofcables and annealing temperature by linear fitting in the thesis. Then, on the basis ofdesign ideas, the total circuit of the control box and other auxiliary equipment weremodularly designed.Based on the product designs, the circuit boards and the control box had beengenerated. Then, the whole control system was assembled through welding and installing.By various tests and experiments, its various functions met all of the anticipated resultsand requirements.