초록 ▼

A 6-degree-of-freedom control apparatus for a spacecraft includes a plurality of thrusters, thruster modulator, position/velocity detector, target position/velocity generator, attitude/angular velocity detector, target attitude/angular velocity generator, and 6-degree-of-freedom controller. The thru

A 6-degree-of-freedom control apparatus for a spacecraft includes a plurality of thrusters, thruster modulator, position/velocity detector, target position/velocity generator, attitude/angular velocity detector, target attitude/angular velocity generator, and 6-degree-of-freedom controller. The thrusters control three position axes and three attitude axes of a spacecraft by jet. The thruster modulator selectively drives the thrusters on the basis of a thruster control signal. The position/velocity detector measures a position and velocity of the spacecraft. The target position/velocity generator generates target position and velocity values of the spacecraft. The attitude/angular velocity detector measures an attitude and angular velocity of the spacecraft. The target attitude/angular velocity generator generates target attitude and angular velocity values of the spacecraft. The 6-degree-of-freedom controller generates the thruster control signal on the basis of a deviation between an output from the position/velocity detector and an output from the target position/velocity generator and a deviation between an output from the attitude/angular velocity detector and an output from the target attitude/angular velocity generator and outputs the signal to the thruster modulator.

대표청구항 ▼

A 6-degree-of-freedom control apparatus for a spacecraft includes a plurality of thrusters, thruster modulator, position/velocity detector, target position/velocity generator, attitude/angular velocity detector, target attitude/angular velocity generator, and 6-degree-of-freedom controller. The thru

A 6-degree-of-freedom control apparatus for a spacecraft includes a plurality of thrusters, thruster modulator, position/velocity detector, target position/velocity generator, attitude/angular velocity detector, target attitude/angular velocity generator, and 6-degree-of-freedom controller. The thrusters control three position axes and three attitude axes of a spacecraft by jet. The thruster modulator selectively drives the thrusters on the basis of a thruster control signal. The position/velocity detector measures a position and velocity of the spacecraft. The target position/velocity generator generates target position and velocity values of the spacecraft. The attitude/angular velocity detector measures an attitude and angular velocity of the spacecraft. The target attitude/angular velocity generator generates target attitude and angular velocity values of the spacecraft. The 6-degree-of-freedom controller generates the thruster control signal on the basis of a deviation between an output from the position/velocity detector and an output from the target position/velocity generator and a deviation between an output from the attitude/angular velocity detector and an output from the target attitude/angular velocity generator and outputs the signal to the thruster modulator. herein the default addresses are reset, isolating all of the components connected to the central control apparatus from the central control apparatus and subsequently reconnecting the components to the central control apparatus in sequence and initializing said recognition phase as each component is reconnected to the central control apparatus. 3. A procedure for controlling individual components of a work station in a textile machine having a plurality of the workstations disposed in proximity to each other, the workstation components having individual control devices, said process comprising: connecting the components at the workstations to a bus system, wherein the bus system is in turn connected to a central control apparatus; setting identifying addresses for the components to a default value; recognizing with the central control apparatus that the components have been installed; initializing a recognition phase wherein the components are interrogated by the central control apparatus and the default address is converted to a component specific address such that for a given section of the textile machine, the same components have different specific addresses; controlling operations relating to the components with the central control apparatus that communicates with selected components through their respective control device in accordance with their respective component specific address; and establishing an initialization phase prior to connection of the components to the bus system such that any component subsequently connected to the bus system is immediately assigned a default address. 4. A procedure for controlling individual components of a work station in a textile machine having a plurality of the workstations disposed in proximity to each other, the workstation components having individual control devices, said process comprising: connecting the components at the workstations to a bus system, wherein the bus system is in turn connected to a central control apparatus; setting identifying addresses for the components to a default value; recognizing with the central control apparatus that the components have been installed; initializing a recognition phase wherein the components are interrogated by the central control apparatus and the default address is converted to a component specific address such that for a given section of the textile machine, the same components have different specific addresses; controlling operations relating to the components with the central control apparatus that communicates with selected components through their respective control device in accordance with their respective component specific address; and generating with said central control apparatus a signal designating the work station at which the next component is to be connected to the bus system. 5. A procedure for controlling individual components of a work station in a textile machine having a plurality of the workstations disposed in proximity to each other, the workstation components having individual control devices, said process comprising: connecting the components at the workstations to a bus system, wherein the bus system is in turn connected to a central control apparatus; setting identifying addresses for the components to a default value; recognizing with the central control apparatus that the components have been installed; initializing a recognition phase wherein the components are interrogated by the central control apparatus and the default address is converted to a component specific address such that for a given section of the textile machine, the same components have different specific addresses; controlling operations relating to the components with the central control apparatus that communicates with selected components through their respective control device in accordance with their respective component specific address; and upon lack of an answer from an individual control device aft er a specified period of time to a read-request from the central control apparatus, initiating at least one of the following: the read-request is sent again to the individual control device; the individual control device stops its associated component; the component-specific address of the corresponding component is converted to a default address; and a fault alarm is initiated. 6. The procedure as in claim 5, wherein for replacement or exchange of a component with another component, placing the central control apparatus in an exchange mode and assigning the new component control device a default address and subsequently assigning a component specific address. 7. The procedure as in claim 5, wherein for subsequent replacement or exchange of a component with another component, assigning the component specific address for the component being replaced to the replacement component. 8. The procedure as in claim 5, comprising determining the component specific addresses as a function of relative location of the components. 9. The procedure as in claim 5, comprising conducting the recognition phase sequentially on the components, and the recognition phase for a given component is not initialized until the recognition phase for the preceding component is complete. 10. The procedure as in claim 5, wherein the central control apparatus has a number of initialization addresses that it cycles through, and further comprising conducting an initialization phase wherein in conjunction with the recognition phase, the default addresses are cyclically converted to the initialization addresses and the initialization addresses are converted to the component specific addresses. 11. The procedure as in claim 10, comprising initiating the initialization phase and recognition phase by connection of the components to the bus system. 12. The procedure as in claim 11, comprising sending a control voltage or signal to the component by the central control apparatus to initiate the initialization and recognition phases. 13. The procedure as in claim 10, comprising registering a component lacking a default address or a component specific address as absent in the central control apparatus. 14. The procedure as in claim 10, comprising physically indicating a successful conversion of a default address into a component specific address for a recognized component. 15. The procedure as in claim 14, comprising activating and intermittently driving the component upon successful conversion of a default address to a component specific address. 16. A procedure for controlling individual components of a work station in a textile machine having a plurality of the workstations disposed in proximity to each other, the workstation components having individual control devices, said process comprising: connecting the components at the workstations to a bus system, wherein the bus system is in turn connected to a central control apparatus; setting identifying addresses for the components to a default value; recognizing with the central control apparatus that the components have been installed; initializing a recognition phase wherein the components are interrogated by the central control apparatus and the default address is converted to a component specific address such that for a given section of the textile machine, the same components have different specific addresses; controlling operations relating to the components with the central control apparatus that communicates with selected components through their respective control device in accordance with their respective component specific address; and wherein the textile machine is an open-end spinning machine and the work station components are fiber feeding components for feeding fibers to spinning elements at the work stations, the fiber feeding components carrying out a thread start operation in accordance with a previously determined first input set values, said procedure further comprising monitoring thread c