Electricity: motive power systems – Positional servo systems – Unwanted harmonic or voltage component elimination...
Reexamination Certificate
2007-01-09
2007-01-09
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Positional servo systems
Unwanted harmonic or voltage component elimination...
C318S801000, C318S560000, C363S039000, C363S040000, C363S041000
Reexamination Certificate
active
11158247
ABSTRACT:
The disclosure concerns a a motor drive apparatus, an electric actuator and an electric power steering apparatus capable of continuous torque control up to the high drive speed and high torque area, in order to enable quick acceleration and deceleration. A controller comprises a voltage saturation detecting apparatus for detecting the voltage saturation of the output voltage of an inverter circuit, based on the battery voltage, and a waveform controller that converts the drive waveform of the inverter circuit into the waveform created by superimposing harmonics of high odd-numbered order on a sinusoidal wave as a fundamental wave of the modulated wave modulated by a PWN carrier wave; and continuously changes the ratio of superimposing the high-order harmonics in response to the voltage saturation detected by a voltage saturation detecting means. This arrangement allows the controller to continuously change the drive waveform of the inverter circuit.
REFERENCES:
patent: 5357181 (1994-10-01), Mutoh et al.
patent: 5967253 (1999-10-01), Collier-Hallman
patent: 6639379 (2003-10-01), Matsushita et al.
patent: 6674262 (2004-01-01), Kitajima et al.
patent: 6768280 (2004-07-01), Kitajima
patent: 6777907 (2004-08-01), Ho
patent: 6838844 (2005-01-01), Shimizu et al.
patent: 6906492 (2005-06-01), Matsushita
patent: 6963182 (2005-11-01), Suzuki
patent: 2003/0057913 (2003-03-01), Matsushita et al.
patent: 2004/0104697 (2004-06-01), Suzuki
patent: 2004/0183496 (2004-09-01), Yoshimoto
patent: 2004/0232865 (2004-11-01), Suzuki
patent: 2005/0073280 (2005-04-01), Yoshinaga et al.
patent: 2005/0241875 (2005-11-01), Ta et al.
patent: 2006/0009893 (2006-01-01), Suzuki
patent: 2006/0022626 (2006-02-01), Kobayashi et al.
patent: 11-285288 (1999-10-01), None
patent: 2002-345283 (2002-11-01), None
Ajima Toshiyuki
Kaneko Satoru
Miyazaki Hideki
Takamune Yuuichirou
Colon Santana Eduardo
Crowell & Moring LLP
Donovan Lincoln
Hitachi , Ltd.
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