Waveform flat-topping unit
First Claim
1. A waveform flat-topping unit comprising:
- means for producing first, second and third reference signals;
a normalizing unit for normalizing the first reference signal;
means for generating a third harmonic waveform of the normalized first reference signal;
means for producing a vector value according to the first, second and third reference signals;
means for comparing the vector value to a predetermined threshold value;
means, responsive to the comparing means, for adding zero to each of the first, second and third reference signals when the vector value is less than or equal to the predetermined threshold value; and
means, responsive to the comparing means, for adding the third harmonic waveform to each of the first, second and third reference signals when the vector value is greater than the predetermined threshold value.
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Accused Products
Abstract
A waveform flat-topping unit includes a signal generator for producing first, second and third reference signals and a normalizing unit for normalizing the first reference signal. A waveform generator produces a third harmonic waveform of the normalized first reference signal. A comparator compares a vector value, which is produced according to the first, second and third reference signals, to a predetermined threshold value, the predetermined threshold value being the largest realizable pure signal value. An adder in response to the comparison, adds zero to each of the first, second and third reference signals when the vector value is less than or equal to the predetermined threshold value. The adder adds the third harmonic signal to each of the first, second and third reference signals when the vector value is greater than the predetermined threshold value.
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Citations
17 Claims
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1. A waveform flat-topping unit comprising:
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means for producing first, second and third reference signals; a normalizing unit for normalizing the first reference signal; means for generating a third harmonic waveform of the normalized first reference signal; means for producing a vector value according to the first, second and third reference signals; means for comparing the vector value to a predetermined threshold value; means, responsive to the comparing means, for adding zero to each of the first, second and third reference signals when the vector value is less than or equal to the predetermined threshold value; and means, responsive to the comparing means, for adding the third harmonic waveform to each of the first, second and third reference signals when the vector value is greater than the predetermined threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A waveform flat-topping unit comprising:
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means for producing first, second and third reference signals of a stationary frame; means for producing fourth and fifth reference signals of a rotating frame, where both the fourth and fifth reference signals correspond to a difference between the first and third reference signals; a normalizing unit for normalizing the first reference signal; means for generating a third harmonic waveform of the normalized first reference signal; means for producing a vector value according to the fourth and fifth reference signals; means for comparing the vector value to a predetermined threshold value; means, responsive to the comparing means, for adding zero to each of the first, second and third reference signals when the vector value is less than or equal to the predetermined threshold value; and means, responsive to the comparing means, for adding the third harmonic waveform to each of the first, second and third reference signals when the vector value is greater than the predetermined threshold value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification