The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2005
Filed:
Jan. 16, 2003
Zenon Szulyk, Mount Prospect, IL (US);
Zenon Szulyk, Mount Prospect, IL (US);
MPC Products Corporation, Skokie, IL (US);
Abstract
Servo motor controls are disclosed for passivation in the event of failures with at least two independent control paths and validation of positional information. A sensor assembly generates signals indicative of the position of the motor rotor, and a signal validation detector is used to validate the generated signals and inhibit rotation of the motor rotor when the sensor assembly generates an invalid signal. A first information processor is provided in communication with the sensor assembly for receiving the generated signals to establish an A Lane decision-making channel control path to the PWM interface, and a second information processor is in communication with the sensor assembly to establish a B Lane decision-making channel control path to the PWM interface. Control logic provided with a PWM interface also inhibits rotation of the motor rotor when a decision from the A Lane differs from a decision from the B Lane. The commutation signal detector provides a state machine to validate the commutation and ensure the validity of signals indicating the position of the motor rotor from the sensor assembly.