The Experts below are selected from a list of 10956 Experts worldwide ranked by ideXlab platform

Yungchi Chang - One of the best experts on this subject based on the ideXlab platform.

  • Position control of an interior permanent magnet synchronous motor without using a Shaft Position sensor
    IEEE Transactions on Industrial Electronics, 2007
    Co-Authors: Jiliang Shi, Tianhua Liu, Yungchi Chang
    Abstract:

    This paper proposes a novel sensorless Position control system for an interior permanent-magnet synchronous motor. In this paper, a novel rotor Position/velocity estimation technique is proposed. This estimation technique only relates to the slopes of the stator currents and does not relate to the parameters or operating conditions of the motor. Neither an extra circuit nor an external high-frequency exciting signal is required here as compared to other Position estimation techniques. In addition, the proposed estimator works well in transient, steady-state, and standstill conditions. As a result, the proposed method is very robust and useful. To improve the performance of the Position-control system, an optimal controller is proposed. By using this controller, a fast transient response, good load disturbance rejection capability, and satisfactory tracking ability can be achieved. A digital signal processor, TMS-320-LF-2407, is used to execute the rotor Position/velocity estimation, the current-loop control, the velocity-loop control, and the Position-loop control. As a result, a fully digital Position-control system is achieved. Several experimental results validate the theoretical analysis.

Jiliang Shi - One of the best experts on this subject based on the ideXlab platform.

  • Position control of an interior permanent magnet synchronous motor without using a Shaft Position sensor
    IEEE Transactions on Industrial Electronics, 2007
    Co-Authors: Jiliang Shi, Tianhua Liu, Yungchi Chang
    Abstract:

    This paper proposes a novel sensorless Position control system for an interior permanent-magnet synchronous motor. In this paper, a novel rotor Position/velocity estimation technique is proposed. This estimation technique only relates to the slopes of the stator currents and does not relate to the parameters or operating conditions of the motor. Neither an extra circuit nor an external high-frequency exciting signal is required here as compared to other Position estimation techniques. In addition, the proposed estimator works well in transient, steady-state, and standstill conditions. As a result, the proposed method is very robust and useful. To improve the performance of the Position-control system, an optimal controller is proposed. By using this controller, a fast transient response, good load disturbance rejection capability, and satisfactory tracking ability can be achieved. A digital signal processor, TMS-320-LF-2407, is used to execute the rotor Position/velocity estimation, the current-loop control, the velocity-loop control, and the Position-loop control. As a result, a fully digital Position-control system is achieved. Several experimental results validate the theoretical analysis.

Torben Ole Andersen - One of the best experts on this subject based on the ideXlab platform.

  • Dynamic Response of a Digital Displacement Motor Operating with Various Displacement Strategies
    Energies, 2019
    Co-Authors: Sondre Nordås, Michael M. Beck, Morten Kjeld Ebbesen, Torben Ole Andersen
    Abstract:

    Digital displacement technology has the potential of revolutionizing the performance of hydraulic piston pumps and motors. Instead of connecting each cylinder chamber to high and low pressure in conjunction with the Shaft Position, two electrically-controlled on/off valves are connected to each chamber. This allows for individual cylinder chamber control. Variable displacement can be achieved by using different displacement strategies, like for example the full stroke, partial stroke, or sequential partial stroke displacement strategy. Each displacement strategy has its transient and steady-state characteristics. This paper provides a detailed simulation analysis of the transient and steady-state response of a digital displacement motor running with various displacement strategies. The non-linear digital displacement motor model is verified by experimental work on a radial piston motor.

Tianhua Liu - One of the best experts on this subject based on the ideXlab platform.

  • Position control of an interior permanent magnet synchronous motor without using a Shaft Position sensor
    IEEE Transactions on Industrial Electronics, 2007
    Co-Authors: Jiliang Shi, Tianhua Liu, Yungchi Chang
    Abstract:

    This paper proposes a novel sensorless Position control system for an interior permanent-magnet synchronous motor. In this paper, a novel rotor Position/velocity estimation technique is proposed. This estimation technique only relates to the slopes of the stator currents and does not relate to the parameters or operating conditions of the motor. Neither an extra circuit nor an external high-frequency exciting signal is required here as compared to other Position estimation techniques. In addition, the proposed estimator works well in transient, steady-state, and standstill conditions. As a result, the proposed method is very robust and useful. To improve the performance of the Position-control system, an optimal controller is proposed. By using this controller, a fast transient response, good load disturbance rejection capability, and satisfactory tracking ability can be achieved. A digital signal processor, TMS-320-LF-2407, is used to execute the rotor Position/velocity estimation, the current-loop control, the velocity-loop control, and the Position-loop control. As a result, a fully digital Position-control system is achieved. Several experimental results validate the theoretical analysis.

Sondre Nordås - One of the best experts on this subject based on the ideXlab platform.

  • Dynamic Response of a Digital Displacement Motor Operating with Various Displacement Strategies
    Energies, 2019
    Co-Authors: Sondre Nordås, Michael M. Beck, Morten Kjeld Ebbesen, Torben Ole Andersen
    Abstract:

    Digital displacement technology has the potential of revolutionizing the performance of hydraulic piston pumps and motors. Instead of connecting each cylinder chamber to high and low pressure in conjunction with the Shaft Position, two electrically-controlled on/off valves are connected to each chamber. This allows for individual cylinder chamber control. Variable displacement can be achieved by using different displacement strategies, like for example the full stroke, partial stroke, or sequential partial stroke displacement strategy. Each displacement strategy has its transient and steady-state characteristics. This paper provides a detailed simulation analysis of the transient and steady-state response of a digital displacement motor running with various displacement strategies. The non-linear digital displacement motor model is verified by experimental work on a radial piston motor.