Brushless repulsion motor speed control system
First Claim
1. A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils, the system comprising:
- first stationary signaling means and a plurality of rotating detectors for activating said switches;
second stationary signaling means for speed control;
a plurality of markers on the rotating armature;
a speed detector for detecting the speed of the rotating markers and generating a speed feedback signal;
means for generating a speed command signal;
an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and
a controller for controlling the signaling means based on the error signal.
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Accused Products
Abstract
A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils comprising first stationary signaling means and a plurality of rotating detectors for activating said switches; second stationary signaling means for speed control; a plurality of markers on the rotating armature; a speed detector for detecting the speed of the rotating markers and generating a speed feedback signal; means for generating a speed command signal; an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and a controller for controlling the signaling means based on the error signal.
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Citations
31 Claims
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1. A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils, the system comprising:
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first stationary signaling means and a plurality of rotating detectors for activating said switches;
second stationary signaling means for speed control;
a plurality of markers on the rotating armature;
a speed detector for detecting the speed of the rotating markers and generating a speed feedback signal;
means for generating a speed command signal;
an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and
a controller for controlling the signaling means based on the error signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils, the system comprising:
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a controller mounted on the armature for controlling the switches;
a plurality of stationary markers on the stator of the motor; and
signaling means and corresponding detecting means on the armature for providing a speed feedback signal to the controller. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A system for controlling the speed of a brushless repulsion motor having a stator and a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils, the system comprising:
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a plurality of markers on the armature;
a signaling source directed to the markers;
a detector for detecting the markers and generating a speed feedback signal; and
a controller for controlling the switches. - View Dependent Claims (18, 19, 20, 21)
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22. A speed control system for a brushless repulsion motor having a stator, an armature, and a series of coil switches for shorting a succession of armature coils, the speed control system comprising:
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a position marker on the armature for determining armature coil position;
first signaling means;
a position detector for detecting the armature coil position marker via the first signaling means;
a plurality of markers on the armature for determining armature speed;
second signaling means;
a speed detector for detecting the speed of the armature via the second signaling means; and
a timer for controlling the speed of the armature and the desired speed of the motor at the precise time as determined by the position of one of the armature coils. - View Dependent Claims (23, 24)
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25. A speed control system for a brushless repulsion motor having a stator, an armature, and a series of coil switches for shorting a succession of armature coils, the speed control system comprising:
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a first controller for generating coded signals for speed control;
transmitting means for transmitting the coded signals to the armature;
receiving on the armature means for receiving the coded signals;
decoding means on the armature for decoding the coded signals; and
a second controller on the armature for controlling the coil switches. - View Dependent Claims (26, 27, 28, 29)
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30. A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils, the system comprising:
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first stationary signaling means and a plurality of rotating detectors for activating said switches;
an encoder for detecting the speed and position of the coil switches and generating a speed feedback signal and a position feedback signal;
generating means for generating a speed command signal;
an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and
a timer for controlling the signaling means based on the error signal. - View Dependent Claims (31)
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Specification