Method, apparatus and design procedure for controlling multi-input, multi-output (MIMO) parameter dependent systems using feedback LTI'zation
First Claim
1. A method of determining the operational status of a multi-input, multi-parameter dependent control system for controlling a dynamic device, said method comprising the steps of:
- receiving a plurality of current status signals representing current statuses of the device and a plurality of control signals for effecting control of the device;
transforming the current status signals and the control signals to a multi-input linear time invariant system;
estimating an expected behavior of the device using the transformed current status signals and the transformed control signals; and
determining the operational status of the control system by comparing the expected behavior of the device to the actual behavior of the device.
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Abstract
A method and apparatus are provided for controlling a dynamic device having multi-inputs and operating in an environment having multiple operating parameters. A method of designing flight control laws using multi-input, multi-output feedback LTI'"'"'zation is also provided. The method includes steps of: (i) determining coordinates for flight vehicle equations of motion; (ii) transforming the coordinates for the flight vehicle equations of motion into a multi-input linear time invariant system; (iii) establishing control laws yielding the transformed equations of motion LTI; (iv) adjusting the control laws to obtain a desired closed loop behavior for the controlled system; and (v) converting the transformed coordinates control laws to physical coordinates.
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Citations
25 Claims
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1. A method of determining the operational status of a multi-input, multi-parameter dependent control system for controlling a dynamic device, said method comprising the steps of:
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receiving a plurality of current status signals representing current statuses of the device and a plurality of control signals for effecting control of the device;
transforming the current status signals and the control signals to a multi-input linear time invariant system;
estimating an expected behavior of the device using the transformed current status signals and the transformed control signals; and
determining the operational status of the control system by comparing the expected behavior of the device to the actual behavior of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multi-parameter dependent control system for controlling a dynamic device having multiple inputs, said system comprising:
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receiving means for receiving a plurality of current state signals representing current states of the device and a plurality of control signals for effecting control of the device;
transforming means for transforming the current state signals and the control signals to a linear time invariant system;
estimating means for estimating an expected behavior of the device using the transformed current state signals and the transformed control signals and for generating estimate signals corresponding to the expected behavior, and determining means for determining the operational status of the control system by comparing the expected behavior of the device to the actual behavior of the device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. Apparatus for detecting a failure in a flight control device having multiple inputs and operating in an environment having multiple parameters, comprising:
processing structure for (i) receiving time-varying status signals from the flight control device, (ii) providing reference signals corresponding to the flight control device, (iii) transforming both the status signals and the reference signals to a linear time invariant coordinate system, (iv) calculating flight control device estimate signals based on the transformed status signals and the transformed reference signals, (v) transforming the calculated estimate signal in a physical coordinate system, and (vi) detecting an error in the flight control device when a difference between the transformed estimate signals and the status signals exceed a predetermined threshold. - View Dependent Claims (22, 23, 24, 25)
Specification