A method for fault detection of aircraft steering gear servo system

Abstract

The invention belongs to the field of aviation flight control and relates to an improvement of an airplane steering engine servo system fault detection method. The fault detection method includes the following steps: establishing a servo system model; discretizing a formula 1; and judging whether a servo loop works normally. The airplane steering engine servo system fault detection method eliminates an original fault detection module, greatly simplifies hardware circuits, reduces size and weight, and lowers manufacturing and maintaining cost.

Description

technical field [0001] The invention belongs to the field of aviation flight control and relates to the improvement of a fault detection method for a servo system of an aircraft steering gear. Background technique [0002] The structural principle block diagram of a current aircraft steering gear servo system can be found in figure 1 , which consists of a first subtractor, a position regulator, a second subtractor, a speed regulator, a third subtractor, a drive circuit, a motor, a reducer, a clutch, a steering surface, a current feedback sensor, a speed feedback sensor, and a position feedback sensor and fault detection module. The first input end of the first subtractor is connected with the position command signal output end of the steering gear servo system controller, and the second input end of the first subtractor is connected with the steering surface position signal output end of the position feedback sensor installed on the steering surface connection, the output ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: first, the fault detection module is composed of hardware, with complex structure, large volume and weight, and high cost

Second, when the physical characteristics of the motor in the steering gear servo system change, the fault detection module needs to be changed, which increases the maintenance cost

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