Servo motor driven continuous casting crystallizer non sine vibration generating arrangement

Servo motor driven continuous casting crystallizer non sine vibration generating arrangement

CN
  • CN 1,318,163 C
  • Filed: 03/25/2005
  • Issued: 05/30/2007
  • Est. Priority Date: 03/25/2005
  • Status: Active Grant
First Claim
Patent Images

1. the continuous casting crystallizer non sine vibration generating arrangement of a driven by servomotor is grouped into by mechanical part and electric control part, it is characterized in that:

  • Mechanical part;

    servomotor (1) is connected by the power shaft of shaft coupling (2) with decelerator (3), the output shaft of decelerator (3) is connected with eccentric shaft (5) by shaft coupling (4), eccentric shaft (5) directly or indirectly drives shake table by connecting rod (6) and crystallizer (7) mounted thereto is realized non-sinusoidal oscillation, wherein servomotor (1) be periodically the variable angular velocity folk prescription to continuous rotation;

    Automatically controlled part;

    computer is pressed the variable angular velocity rotating speed Mathematical Modeling of servomotor n1(t)=602&

    pi;

    i&

    omega;

    &

    lsqb;

    1-Acos(&

    omega;

    t
    )
    &

    rsqb;

    Or n2(t)=602&

    pi;

    i(1-E2)&

    omega;

    1+E2+2Ecos(&

    omega;

    t
    )
    ,
    By certain time interval Δ

    t, automatically calculate the speed setting value of wishing in each sampling instant, provide in proportion and the speed setting value corresponding voltage value by D/A then, the speed governing drive unit compares with rotary speed actual value after this magnitude of voltage is converted into speed setting value, remove to control servomotor (1) after computing and the power amplification, can obtain speed curves---the notch cuttype curve of actual servomotor (1);

    Behind decelerator (3), can obtain the angular speed curve of actual eccentric shaft (5);

    Through obtaining after the mold oscillation mechanism driving and the actual non-sinusoidal oscillation waveform of wishing the crystallizer of waveform basically identical.

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