Single board motor controller
First Claim
Patent Images
1. A compact motor driver circuit comprising:
- a power source operable to provide a first source of voltage referenced to a first ground and a second source of voltage referenced to a second ground;
a digital gate array connected to the second source of voltage referenced to the second ground, said digital gate array comprising an input to receive digital motor control commands, a first combiner to combine a motor control command with a feedback signal which may contain unwanted extraneous signals, a compensator connected to receive the combined motor control signal and feedback signal and to remove unwanted extraneous signals to produce a desired motor control signal, and a pulse width modulator to receive the desired motor control signal and operable to produce an average voltage control signal; and
a motor circuit connected to receive the average voltage control signal, said motor circuit including a first converter to change the average voltage signal from one referenced to the second ground to one referenced to the first ground and to produce a control signal to be presented to a motor, the motor operable to produce a feedback signal, a second converter connected to receive the feedback signal and to change the feedback signal from one referenced to the first ground to one referenced to the second ground for presentation to the combiner; and
a calibration circuit connected to the first combiner to provide compensating signals to accommodate various parameter changes.
1 Assignment
0 Petitions
Accused Products
Abstract
A digital motor controller circuit including a an energy storage device, a bus protection circuit, an input signal selector, a combiner, a calibration device for altering parameters for different applications, a compensator, a motor driver circuit, and feedback circuitry for controlling a motor with a minimum of cost and space requirements.
15 Citations
18 Claims
-
1. A compact motor driver circuit comprising:
-
a power source operable to provide a first source of voltage referenced to a first ground and a second source of voltage referenced to a second ground;
a digital gate array connected to the second source of voltage referenced to the second ground, said digital gate array comprising an input to receive digital motor control commands, a first combiner to combine a motor control command with a feedback signal which may contain unwanted extraneous signals, a compensator connected to receive the combined motor control signal and feedback signal and to remove unwanted extraneous signals to produce a desired motor control signal, and a pulse width modulator to receive the desired motor control signal and operable to produce an average voltage control signal; and
a motor circuit connected to receive the average voltage control signal, said motor circuit including a first converter to change the average voltage signal from one referenced to the second ground to one referenced to the first ground and to produce a control signal to be presented to a motor, the motor operable to produce a feedback signal, a second converter connected to receive the feedback signal and to change the feedback signal from one referenced to the first ground to one referenced to the second ground for presentation to the combiner; and
a calibration circuit connected to the first combiner to provide compensating signals to accommodate various parameter changes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A compact motor driver circuit comprising:
-
a filter, connected to receive power from a power bus to produce a filtered power signal;
an energy storage circuit connected to the filter to receive the filtered power signal;
a plurality of input circuits to receive motor commands signal;
a selector circuit connected to the input circuits to receive the motor command signals and to produce a selected one;
a first combiner circuit connected to receive the selected one and a feedback signal, which may contain undesirable components, to produce a combined signal;
a compensator connected to the receive the combined signal, to remove the undesirable components from the feedback signal and to produce a desired signal;
a pulse width modulator to receive the desired control signal and operable to produce an average voltage control signal an averager to receive the average voltage control signal and to produce a command signal;
a motor circuit connected to receive the command signal and to produce a three phase motor control signal there from;
a feedback connection from the motor circuit to the first combiner to supply the feedback signal thereto and a calibration circuit connected to the first combiner to provide compensating signals to accommodate various parameter changes. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification