Abstract: Systems and methods disclosed herein concern a motorized fitness wheel. The fitness wheel includes a wheel that rotates about an axle with two handles that extend outward from respective sides of the wheel along the rotational axis. In use, the user grasps the handles with their hands and rolls the wheel back and forth along the floor. A motor is configured to apply a torque to the wheel in either forward or backward direction to apply resistance or assistance and enhance the exercise. A position sensor feeds positional information of the motor to a microcontroller. Based on the positional information, the microcontroller dynamically controls the output torque of the motor as a function of one or more torque trajectories. The torque trajectories define the output torque of the motor over a cycle of the exercise as a function a spatial variable (e.g., wheel position) and/or time.

Abstract: Disclosed herein are linear electric surgical hammer impact tools and methods of use thereof. The linear electric surgical hammer impact tools can include a shuttle located inside a cavity of a housing. A wall of the shuttle defines a plurality of grooves extend from a first end of the shuttle to a second end of the shuttle. A piston can be located at least partially within the shuttle and arranged along the longitudinal axis of the housing. The piston includes protrusions and each of the protrusions can be arranged to travel within a respective one of the grooves of the shuttle. Motion of the piston in a first direction causes the piston to contact the first end of the shuttle and motion of the piston in a second direction causes the piston to contact the second end of the shuttle.

Abstract: Systems and methods disclosed herein concern a motorized fitness wheel. The fitness wheel includes a wheel that rotates about an axle with two handles that extend outward from respective sides of the wheel along the rotational axis. In use, the user grasps the handles with their hands and rolls the wheel back and forth along the floor. A motor is configured to apply a torque to the wheel in either forward or backward direction to apply resistance or assistance and enhance the exercise. A position sensor feeds positional information of the motor to a microcontroller. Based on the positional information, the microcontroller dynamically controls the output torque of the motor as a function of one or more torque trajectories. The torque trajectories define the output torque of the motor over a cycle of the exercise as a function a spatial variable (e.g., wheel position) and/or time.

Abstract: Systems and methods disclosed herein concern a motorized fitness wheel. The fitness wheel includes a wheel that rotates about an axle with two handles that extend outward from respective sides of the wheel along the rotational axis. In use, the user grasps the handles with their hands and rolls the wheel back and forth along the floor. A motor is configured to apply a torque to the wheel in either forward or backward direction to apply resistance or assistance and enhance the exercise. A position sensor feeds positional information of the motor to a microcontroller. Based on the positional information, the microcontroller dynamically controls the output torque of the motor as a function of one or more torque trajectories. The torque trajectories define the output torque of the motor over a cycle of the exercise as a function a spatial variable (e.g., wheel position) and/or time.

Abstract: Systems and methods disclosed herein concern a motorized fitness wheel. The fitness wheel includes a wheel that rotates about an axle with two handles that extend outward from respective sides of the wheel along the rotational axis. In use, the user grasps the handles with their hands and rolls the wheel back and forth along the floor. A motor is configured to apply a torque to the wheel in either forward or backward direction to apply resistance or assistance and enhance the exercise. A position sensor feeds positional information of the motor to a microcontroller. Based on the positional information, the microcontroller dynamically controls the output torque of the motor as a function of one or more torque trajectories. The torque trajectories define the output torque of the motor over a cycle of the exercise as a function a spatial variable (e.g., wheel position) and/or time.

Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is closed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.

Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is closed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.

Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is closed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.

Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is dosed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.

Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is closed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.

Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is closed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.

Abstract: A method of controlling a dynamic system including selecting at least one fundamental limiting parameter; selecting an input parameter of the dynamic system; generating a command for the input parameter causing the dynamic system to follow an output trajectory such that the fundamental limiting parameter does not substantially saturate during the output trajectory duration; and commanding the dynamic system with the command.

Abstract: Techniques are provided herein for reducing vibrations in various modes of a dynamic system. One such technique comprises incorporating vibration limiting and sensitivity constraints into a partial fraction expansion equation model of the system so as to reduce vibrations to specific levels. Another technique comprises shaping a command determined using the partial fraction expansion equation model to produce a desired output. The entire command may be shaped or only selected portions thereof which produce vibrations. Another technique involves commanding in current to produce saturation in voltage. By doing this it is possible to command voltage switches. The times at which the switches occur can be set to reduce system vibrations. Other techniques are also provided. These include varying transient portions at the beginning, middle and/or end of a move and using Posicast inputs, among others.

Abstract: Techniques are provided herein for reducing vibrations in various modes of a dynamic system. One such technique comprises incorporating vibration limiting and sensitivity constraints into a partial fraction expansion equation model of the system so as to reduce vibrations to specific levels. Another technique comprises shaping a command determined using the partial fraction expansion equation model to produce a desired output. The entire command may be shaped or only selected portions thereof which produce vibrations. Another technique involves commanding in current to produce saturation in voltage. By doing this, it is possible to command voltage switches. The times at which the switches occur can be set to reduce system vibrations. Other techniques are also provided. These include varying transient portions at the beginning, middle and/or end of a move and using Posicast inputs, among others.

Abstract: Techniques are provided herein for reducing vibrations in various modes of a dynamic system. One such technique comprises incorporating vibration limiting and sensitivity constraints into a partial fraction expansion equation model of the system so as to reduce vibrations to specific levels. Another technique comprises shaping a command determined using the partial fraction expansion equation model to produce a desired output. The entire command may be shaped or only selected portions thereof which produce vibrations. Another technique involves commanding in current to produce saturation in voltage. By doing this it is possible to command voltage switches. The times at which the switches occur can be set to reduce system vibrations. Other techniques are also provided. These include varying transient portions at the beginning, middle and/or end of a move and using Posicast inputs, among others.

Abstract: Techniques are provided herein for reducing vibrations in various modes of a dynamic system. One such technique comprises incorporating vibration limiting and sensitivity constraints into a partial fraction expansion equation model of the system so as to reduce vibrations to specific levels. Another technique comprises shaping a command determined using the partial fraction expansion equation model to produce a desired output. The entire command may be shaped or only selected portions thereof which produce vibrations. Another technique involves commanding in current to produce saturation in voltage. By doing this, it is possible to command voltage switches. The times at which the switches occur can be set to reduce system vibrations. Other techniques are also provided. These include varying transient portions at the beginning, middle and/or end of a move and using Posicast inputs, among others.

Abstract: Techniques are provided herein for reducing vibrations in various modes of a dynamic system. One such technique comprises incorporating vibration limiting and sensitivity constraints into a partial fraction expansion equation model of the system so as to reduce vibrations to specific levels. Another technique comprises shaping a command determined using the partial fraction expansion equation model to produce a desired output. The entire command may be shaped or only selected portions thereof which produce vibrations. Another technique involves commanding in current to produce saturation in voltage. By doing this, it is possible to command voltage switches. The times at which the switches occur can be set to reduce system vibrations. Other techniques are also provided. These include varying transient portions at the beginning, middle and/or end of a move and using Posicast inputs, among others.

Abstract: Techniques are provided herein for reducing vibrations in various modes of a dynamic system. One such technique comprises incorporating vibration limiting and sensitivity constraints into a partial fraction expansion equation model of the system so as to reduce vibrations to specific levels. Another technique comprises shaping a command determined using the partial fraction expansion equation model to produce a desired output. The entire command may be shaped or only selected portions thereof which produce vibrations. Another technique involves commanding in current to produce saturation in voltage. By doing this, it is possible to command voltage switches. The times at which the switches occur can be set to reduce system vibrations. Other techniques are also provided. These include varying transient portions at the beginning, middle and/or end of a move and using Posicast inputs, among others.

Abstract: Whenever a PAUSE frame is generated locally, a pause refresh timer is set with the pause parameter from the PAUSE frame. PAUSE frames which are received from a remote data sink are trapped and the value of the pause parameter is evaluated. If the value is smaller than the current pause refresh timer value, the pause frame is discarded. If the value is equal to or larger than the current pause refresh timer value, the PAUSE frame is passed on to the data source and an end-to-end flow control (EEFC) timer is set with the pause parameter received from the remote data sink. While the EEFC timer is counting down, locally generated PAUSE frames having a pause parameter less than the timer value are suppressed.

Abstract: A method for reconstructing the original groove configuration of a phonograph record. The methodology comprises providing an instrument for measuring the entire groove of a phonograph with an instrument in communication with a computer. The computer reconstructs the original groove configuration, using data from the measurements of the record groove. Various instrument embodiments are disclosed.