Increased servo control system bandwidth using a tuned mass damper
AssigneeThe Boeing Company
InventorSteven Griffin
Life of this patent
Estimating the term…
Abstract
An example servo control system includes one or more components configured to be actuated for movement, a system controller including one or more processors for receiving feedback of the movement of the one or more components and for using the feedback within a control loop to cause an actuator to reduce error of the movement of the one or more components, and a tuned mass damper (TMD) physically connected to the one or more components. Parameters of the TMD are selected to add phase margin at a crossover frequency of the servo control system, and the TMD includes a mass coupled to the one or more components, a damper connected between the mass and the one or more components, and a spring component connected between the mass and the one or more components.
Claims18
A method to increase a servo control system effective bandwidth, comprising:
- coupling a tuned mass damper (TMD) to a servo control system, wherein the servo control system includes one or more components configured to be actuated for movement, and wherein parameters of the TMD are selected to add phase margin at a crossover frequency of the servo control system, and wherein the parameters of the TMD are selected based on:
- (i) tuning an uncoupled resonance frequency of the TMD to the crossover frequency of the servo control system;
- (ii) determining a mass of the TMD to be between about 2% and about 10% of a mass of the one or more components being actuated;
- and
- (iii) optimizing a damping of the TMD to decrease a peak of an error rejection of the servo control system based on the tuned frequency and the mass;
- and
- operating the servo control system with the coupled TMD to increase phase margin and counteract a latency of a control loop of the servo control system.
A servo control system, comprising:
- one or more components configured to be actuated for movement;
- a system controller including one or more processors for receiving feedback of the movement of the one or more components, and for using the feedback within a control loop to cause an actuator to reduce error of the movement of the one or more components;
- and
- a tuned mass damper (TMD) physically connected to the one or more components, wherein parameters of the TMD are selected to add phase margin at a crossover frequency of the servo control system, and wherein the TMD includes a mass coupled to the one or more components, a damper connected between the mass and the one or more components, and a spring component connected between the mass and the one or more components, and wherein parameters of the TMD are selected based on:
- (i) tuning an uncoupled resonance frequency of the TMD to the crossover frequency of the servo control system;
- (ii) determining a mass of the TMD to be between about 2% and about 10% of a mass of the one or more components being actuated;
- and
- (iii) optimizing a damping of the TMD to decrease a peak of an error rejection of the servo control system based on the tuned frequency and the mass.
A method of operating a servo control system, comprising:
- coupling a tuned mass damper (TMD) to a servo control system, wherein the servo control system includes one or more components configured to be actuated for movement and a system controller including one or more processors, wherein parameters of the TMD are selected to add phase margin at a crossover frequency of the servo control system;
- operating the servo control system with the coupled TMD to increase phase margin and counteract a latency of a control loop of the servo control system;
- receiving, by the system controller, feedback of the movement of the one or more components of the servo control system being actuated;
- using the feedback within a control loop to cause an actuator to reduce error of the movement of the one or more components;
- and
- adjusting, by a tuner coupled to the system controller, the parameters of the TMD based on a presence of a latency of the control loop of the servo control system so as to increase phase margin of the servo control system without using sensor outputs of the control loop of the servo control system, wherein adjusting includes determining a mass of the TMD to be between about 2% and about 10% of a mass of the one or more components being actuated.
Dependencies are inferred from the claim text.