High-power-density integrated electromechanical servo actuating device

Abstract

The invention provides a high-power-density integrated electromechanical servo actuating device. The high-power-density integrated electromechanical servo actuating device comprises an integrated permanent magnet synchronous motor, a rotor sleeve, a planet roller lead screw pair, a bearing and matched devices such as a sensor. A motor stator is embedded into the inner side of a cylinder body, forms the integrated motor together with a permanent magnet patch attached to the rotor sleeve and drives the rotor sleeve to do rotating motion; the rotor sleeve is fixedly connected to a flange plate through a screw and then drive a lead screw to generate synchronous rotating motion through a key structure arranged on the roller lead screw; the planet roller lead screw pair converts rotating motion of the lead screw into linear motion of a nut; finally, the nut pushes an output rod to do linear motion by taking the liner bearing as a guide of the output rod through a thread formed in the output rod and a lock washer device. According to the high-power-density integrated electromechanical servo actuating device, the problem that an existing electromechanical actuating device is large in size and weight is solved, then the power to weight ratio and loading capacity of the electromechanical actuating device are increased, and a technical support is provided for promoting development of future multi-electrochemical / full-electrochemical air vehicles.

Description

technical field [0001] The invention is an electric servo actuating device, especially applied to the rudder surface servo control system of a multi-electric / full-electric aircraft, and can also be used in aircraft landing gear retraction, turning and braking systems; it belongs to aerospace and marine machinery, electronics and field of control technology. Background technique [0002] At present, the multi-electricity of aircraft and ships is an important development trend. The power-by-wire actuation system has become one of the hotspots in the field of aerospace and navigation. It completes the transmission between the secondary energy system and each actuator through the transmission of electric energy. power transmission. Compared with the traditional hydraulic actuation system, it belongs to green energy, with strong flexibility, good safety, high efficiency, high reliability and easy maintenance. [0003] The actuation system and devices are important components fo...

AI Technical Summary

Problems solved by technology

[0004] Nowadays, there are two power sources for the actuation system. One is the hydraulic energy supply. The traditional hydraulic servo actuator is used, that is, through the conversion of high and low pressure oil, the work is done to output linear motion, thereby changing the attitude of the rudder surface. This kind of steering gear is suitable for It is suitable for large output force occasions, and the volume and weight are relatively large; the other is the power electric drive actuator supplied by electric energy, that is, the electromechanical servo mechanism is used to drive the hydraulic cylinder or the screw pair. This new electromechanical method uses green energy It can be applied to high torque and high power occasions, but the structure is complex

Neither of the above two structures can meet the needs of multi-electric / all-electric aircraft for electromechanical servo mechanisms with high power-to-weight ratio, strong carrying capacity, and small installation space.

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