Search

CN-121979043-A - Rail-controlled spray pipe control distribution method considering clamping stagnation fault

CN121979043ACN 121979043 ACN121979043 ACN 121979043ACN-121979043-A

Abstract

The invention relates to a rail control spray pipe control distribution method considering clamping stagnation faults, and belongs to the field of aircraft control. Under the condition that a certain rail control spray pipe has a clamping stagnation fault and the clamping stagnation value is known, the opening instruction distribution of the rail control spray pipe is completed, the sum of the instructions is kept to be 1, and the overload demand is paid to the maximum extent. The method comprises the following steps of (1) designing a control structure and control parameters, solving pitch and yaw channel rail control spray pipe instructions, (2) designing a spray pipe instruction distribution algorithm under no fault, and (3) designing the spray pipe instruction distribution algorithm by considering single spray pipe clamping stagnation faults. According to the invention, under the condition that the clamping stagnation fault occurs in 1 track control spray pipe, 4 spray pipe instructions can still be kept to be 1 through the spray pipe instruction distribution method, so that the flight safety is ensured, and the overload is paid out to the maximum extent under the condition.

Inventors

  • ZHENG WENQUAN
  • XU DONGHUAN
  • YE SAIXIAN
  • YU SHUAIXIAN
  • HUANG YIXIN

Assignees

  • 上海航天控制技术研究所

Dates

Publication Date
20260505
Application Date
20260120

Claims (10)

  1. 1. A method of controlling and distributing rail-controlled nozzles taking into account stuck faults for an aircraft employing 4 rail-controlled nozzles for overload control, each nozzle being responsive to successive independent instructions, comprising: designing a control structure and control parameters, and solving pitch and yaw channel rail control spray pipe instructions; realizing nozzle instruction distribution under the condition of no fault according to a nozzle instruction distribution algorithm under the condition of no fault; and designing a nozzle command distribution algorithm by considering a certain nozzle clamping stagnation fault, and realizing nozzle command distribution under the condition of the certain nozzle clamping stagnation fault.
  2. 2. The method for controlling and distributing rail-controlled spray pipes by considering clamping stagnation faults according to claim 1, wherein the design control structure and control parameters are used for solving the instructions of the rail-controlled spray pipes of pitching and yawing channels, and the method is characterized in that: In the formula, 、 Is an aircraft pitch and yaw path overload command, 、 Is the overload response of the pitching and yawing channels of the aircraft, 、 In order to control the parameters of the system, 、 A normalized pitch and yaw rail control nozzle command; 、 Is an intermediate variable.
  3. 3. The method for controlling and distributing the rail-controlled spray pipe with consideration of the clamping stagnation fault according to claim 2 is characterized in that the spray pipe instruction distribution under the fault-free condition is realized according to a spray pipe instruction distribution algorithm under the fault-free condition, and the method specifically comprises the following steps: Case one: (a) If it is (B) If it is (C) If it is (D) If it is And a second case: Order the ; Is a temporary parameter; (a) If it is (B) If it is (C) If it is (D) If it is 、 、 、 And the instructions are respectively rail-controlled spray pipe numbers 1-4.
  4. 4. A method for controlling and distributing a rail-controlled nozzle taking into account a stuck fault as set forth in claim 3, wherein the stuck fault of the No.1 nozzle is taken into account, namely, the stuck value of the rail-controlled No.1 nozzle Designing a spray pipe instruction distribution algorithm, which specifically comprises the following steps: Order the , wherein, 、 Is an intermediate variable; (a) If it is 、 Is an intermediate variable; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if Wherein, the Are temporary variables.
  5. 5. A method for controlling and distributing rail-controlled nozzles by considering stuck faults as set forth in claim 3, wherein the stuck faults of the No. 2 nozzles are considered, namely the stuck values of the No. 2 rail-controlled nozzles Designing a spray pipe instruction distribution algorithm, which specifically comprises the following steps: (a) If it is Wherein, the 、 、 、 All are intermediate variables; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if Wherein, the Are temporary variables.
  6. 6. A method for controlling and distributing rail-controlled spray pipes with consideration of clamping stagnation faults as set forth in claim 3, wherein the clamping stagnation fault of the 3# spray pipes is considered, namely the clamping stagnation value of the rail-controlled 3# spray pipes Designing a spray pipe instruction distribution algorithm, which specifically comprises the following steps: (a) If it is Wherein, the 、 、 、 All are intermediate variables; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if Wherein, the Are temporary variables.
  7. 7. A method for controlling and distributing rail-controlled spray pipes with consideration of clamping stagnation faults as set forth in claim 3, wherein the clamping stagnation fault of the No. 4 spray pipes is considered, namely the clamping stagnation value of the No. 4 spray pipes is controlled in a rail way Designing a spray pipe instruction distribution algorithm, which specifically comprises the following steps: (a) If it is Wherein, the 、 、 、 All are intermediate variables; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if In the formula, Is the clamping stagnation value of the rail control No. 4 spray pipe; Are temporary variables.
  8. 8. A processor, characterized in that the processor is configured to run a program, wherein the program, when run, performs the method according to any of claims 1-7.
  9. 9. A non-volatile storage medium comprising a computer program product which, when executed, performs the method of any of claims 1-7.
  10. 10. A computer program product, characterized in that the computer program product comprises a computer program which, when executed by a processor, implements the steps of the method according to any one of claims 1-7.

Description

Rail-controlled spray pipe control distribution method considering clamping stagnation fault Technical Field The invention relates to a control distribution method of a rail control spray pipe considering a clamping stagnation fault, which belongs to the field of aircraft control, and is suitable for an aircraft adopting 4 rail control spray pipes for overload control, wherein each spray pipe can respond to continuous independent instructions and always keeps the sum of the instructions to be 1. Background Along with the continuous expansion of the flight envelope of the aircraft, particularly the elevation of the altitude, the aircraft is difficult to generate rudder efficiency by utilizing an air rudder under the condition of high altitude and air rarefaction, corresponding overload is paid, and in order to cope with the flight working conditions and tasks, attitude and overload control are carried out by adopting an attitude and orbit control direct force actuator. In order to ensure the performance and safety of the rail control engine, the pressure of the engine cavity is generally required to be constant, and the requirement of converting the engine cavity pressure into a control system is that 4 spray pipe instructions are kept constant to be 1 in the flying process. At present, a need exists for a control and distribution method of a rail-controlled spray pipe considering a jamming fault, which considers that the sum of instructions is 1 under the condition that a certain spray pipe has a jamming fault, ensures the flight safety, and maximally pays out overload requirements. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a rail control spray pipe control distribution method considering clamping stagnation faults, which is suitable for an aircraft adopting the rail control spray pipe to carry out overload control, and realizes the maximum overload of the demand under the fault condition. In order to achieve the above purpose, the present invention adopts the following technical scheme: A control distribution method of a rail control spray pipe considering a clamping stagnation fault is used for an aircraft adopting 4 rail control spray pipes for overload control, each spray pipe can respond to continuous independent instructions, and the method comprises the following steps: step one, designing a control structure and control parameters, and solving pitch and yaw channel rail control spray pipe instructions; Step two, the nozzle command distribution under the condition of no fault is realized according to a nozzle command distribution algorithm under the condition of no fault; And thirdly, designing a jet pipe instruction distribution algorithm by considering a certain jet pipe clamping stagnation fault, and realizing jet pipe instruction distribution under the condition of the certain jet pipe clamping stagnation fault. Further, the design control structure and control parameters solve the pitch and yaw channel rail control spray pipe instruction, and specifically comprises the following steps: In the formula, 、Is an aircraft pitch and yaw path overload command,、Is the overload response of the pitching and yawing channels of the aircraft,、In order to control the parameters of the system,、A normalized pitch and yaw rail control nozzle command;、 Is an intermediate variable. Furthermore, the method for realizing the nozzle command distribution under the fault-free condition according to the fault-free nozzle command distribution algorithm specifically comprises the following steps: Case one: (a) If it is (B) If it is (C) If it is (D) If it is And a second case: Order the ;Is a temporary parameter; (a) If it is (B) If it is (C) If it is (D) If it is 、、、And the instructions are respectively rail-controlled spray pipe numbers 1-4. Further, consider a 1# nozzle stuck fault, i.e., a rail 1# nozzle stuck valueDesigning a spray pipe instruction distribution algorithm, which specifically comprises the following steps: Order the , wherein,、Is an intermediate variable; (a) If it is 、Is an intermediate variable; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if Wherein, the Are temporary variables. Further, consider a 2# nozzle stuck fault, i.e., a rail 2# nozzle stuck valueDesigning a spray pipe instruction distribution algorithm, which specifically comprises the following steps: (a) If it is Wherein, the 、、、All are intermediate variables; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if Wherein, the Are temporary variables. Further, consider a 3# nozzle stuck fault, i.e., a rail 3# nozzle stuck valueDesigning a spray pipe instruction distribution algorithm, which specifically comprises the following steps: (a) If it is Wherein, the 、、、All are intermediate variables; (I) If it is (II) if (B) If it is (I) If it is (II) if (III) if (IV) if Wherein, the Are temporary variables. Further, consider a 4# nozzle stuck fault,