ADAPTIVE AND RECONFIGURABLE SYSTEM FOR DC MOTOR CONTROL
First Claim
1. An integrated circuit for controlling at least one motor, comprising:
- at least one digital position and speed circuit (DPS) for providing measurements of speed, position, and direction of the at least one motor, the at least one DPS being in signal communication with the at least one motor for receiving a pair of signals having a quadrature relationship; and
at least one programmable gain amplifier (PGA) electrically coupled to the at least one motor, the PGA being configured to receive a feedback signal indicative of current flowing through the at least one motor and to apply a second signal to the at least one motor for adjusting the speed of the at least one motor.
2 Assignments
0 Petitions
Accused Products
Abstract
An integrated circuit for controlling a DC motor is disclosed. The integrated circuit includes at least one digital position and speed circuit (DPS) for providing measurements of speed, position, and direction of the motor, the DPS being in signal communication with the motor for receiving a pair of signals having a quadrature relationship; and at least one programmable gain amplifier (PGA) electrically coupled to the motor, the PGA being configured to receive a feedback signal indicative of current flowing through the motor and to apply a second signal to the motor for adjusting the speed of the motor; and at least two analog-to-digital converters (A/D), one A/D being used to quantize the output of the PGA for an off-chip processor; and another A/D to provide motor reference position from an analog sensor, such as a potentiometer; and at least two digital-to-analog converters (D/A), one D/A used to set the motor voltage; and another D/A used to set the motor current limit. The integrated circuit can be incorporated into a larger motor control loop which further includes a summing amplifier for providing the feedback signal to the motor that is indicative of current flowing through the motor; a buffer amplifier electrically for sensing the output current of the motor, and a processor for providing control signals to the system monolithic module and for receiving the measurements of speed, position, and direction of the motor.
31 Citations
28 Claims
-
1. An integrated circuit for controlling at least one motor, comprising:
-
at least one digital position and speed circuit (DPS) for providing measurements of speed, position, and direction of the at least one motor, the at least one DPS being in signal communication with the at least one motor for receiving a pair of signals having a quadrature relationship; and at least one programmable gain amplifier (PGA) electrically coupled to the at least one motor, the PGA being configured to receive a feedback signal indicative of current flowing through the at least one motor and to apply a second signal to the at least one motor for adjusting the speed of the at least one motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A motor control circuit for controlling at least one motor, comprising:
-
an integrated circuit, comprising; at least one digital position and speed circuit (DPS) for providing measurements of speed, position, and direction of the at least one motor, the DPS being in signal communication with the at least one motor for receiving a pair of signals having a quadrature relationship; and at least one programmable gain amplifier (PGA) electrically coupled to the at least one motor, the PGA being configured to receive a feedback signal indicative of current flowing through the at least one motor and to apply a second signal to the at least one motor for adjusting the speed of the at least one motor; at least one summing amplifier electrically coupled to the at least one PGA for providing the feedback signal to the at least one motor that is indicative of current flowing through the at least one motor; at least one buffer amplifier electrically coupled to the at least one motor and to the at least one PGA for sensing the output current of the at least one motor; and a processor for providing control signals to the at least one DPS, for providing a control voltage to the at least one summing amplifier, and for receiving the measurements of speed, position, and location of the at least one motor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. An integrated circuit for controlling at least one motor, comprising:
at least one digital position and speed circuit (DPS) for providing measurements of speed, position, and direction of the at least one motor, the at least one DPS being in signal communication with the at least one motor for receiving a pair of signals having a quadrature relationship.
Specification