Abstract: A motor control determines if a motor is rotating at steady state velocity and then populates a table with information about each individual motor sector. At steady state velocity, the duration of the motor within an electrical sector is measured. The duration of the complete mechanical rotation of the motor is determined. The controller determines a ratio of the measured duration of the sector to a duration of a complete mechanical rotation of the motor. The ratio of sector duration to rotation duration is stored in a table. The controller is configured for controlling the motor using the table values.

Abstract: A motor control determines if a motor is rotating at steady state velocity and then populates a table with information about each individual motor sector. At steady state velocity, the duration of the motor within an electrical sector is measured. The duration of the complete mechanical rotation of the motor is determined. The controller determines a ratio of the measured duration of the sector to a duration of a complete mechanical rotation of the motor. The ratio of sector duration to rotation duration is stored in a table. The controller is configured for controlling the motor using the table values.

Abstract: A device and method for communicating between networked devices that define a path having a plurality of device positions includes designating a source device for a communication stream wherein the source device has a first port to communicate in a first direction of the path and a second port to communicate in a second direction in the path with devices networked to the source device. A port is selected from one of the first port or the second port of the source device for defining a direction of the communication stream from the source device. A hop count is provided indicating a relative location of a destination device for the communication stream, the hop count being an integer number of network device positions from the source device to the destination device along the path from the selected port.

Abstract: A motor control system for controlling a motor having multiple coils, includes a motor control circuit for providing control signals for controlling a motor, such as PWM signals. A motor drive circuit is coupled to receive the control signals and is configured for providing current drive signals to the multiple coils of the motor. Circuitry measures a plurality of signal values that are reflective of the level of the current drive signals provided to the multiple coils of the motor. Selection circuitry coupled to receive the measured current signal values is configured to dynamically select certain current signal values from the measured plurality of signal values and is further configured to exclude at least one of the current signal values that is indicative of a possibly erroneous or unreliable value.

Abstract: A motor control determines if a motor is rotating at steady state velocity and then populates a table with information about each individual motor sector. At steady state velocity, the duration of the motor within an electrical sector is measured. The duration of the complete mechanical rotation of the motor is determined. The controller determines a ratio of the measured duration of the sector to a duration of a complete mechanical rotation of the motor. The ratio of sector duration to rotation duration is stored in a table. The controller is configured for controlling the motor using the table values.

Abstract: A motor control system for controlling a motor having multiple coils, includes a motor control circuit for providing control signals for controlling a motor, such as PWM signals. A motor drive circuit is coupled to receive the control signals and is configured for providing current drive signals to the multiple coils of the motor. Circuitry measures a plurality of signal values that are reflective of the level of the current drive signals provided to the multiple coils of the motor. Selection circuitry coupled to receive the measured current signal values is configured to dynamically select certain current signal values from the measured plurality of signal values and is further configured to exclude at least one of the current signal values that is indicative of a possibly erroneous or unreliable value.

Abstract: A device and method for communicating between networked devices that define a path having a plurality of device positions includes designating a source device for a communication stream wherein the source device has a first port to communicate in a first direction of the path and a second port to communicate in a second direction in the path with devices networked to the source device. A port is selected from one of the first port or the second port of the source device for defining a direction of the communication stream from the source device. A hop count is provided indicating a relative location of a destination device for the communication stream, the hop count being an integer number of network device positions from the source device to the destination device along the path from the selected port.