Accuracy Characteristics and Experimental Research of UAV Cable Engine Control System

Abstract

Accuracy is one of the important performance indexes of the cable control system, which directly affects the steady and transient performance of the engine. The composition and principle of cable engine control system are introduced, the accuracy characteristics of the test of cable control system are analyzed in the aspects of one-way accuracy, stroke accuracy and repeatability accuracy. The effects of spring force arm and stiffness coefficient, cable guide sleeve routing and cable length on precision of the control system are analyzed with single variable method. The result shows that the absolute value of one-way accuracy of cable engine control system is less than 5%, the stoke accuracy outside the dead zone is less than 3%, and the repeatability accuracy is less than 2%. The dead zone range in the cable system can be reduced by means of reasonable design of the cable length and spring stiffness factor. The wider lateral spacing between the ends of cable guide sleeve can reduce the accuracy of the control system. The research results have practical guidance for the development of high-precision cable engine control system.

Keywords

• control system
• accuracy
• cable
• uav
• engine