Intelligent electric steering engine based on CAN bus communication

Abstract

The invention relates to an intelligent electric actuator based on CAN bus communication, belonging to the field of control technology for airplane moles and anthropomorphic robots. The intelligent electric actuator comprises a signal demodulation circuit, a motor driving integrated circuit and a DC motor, which are successively connected, the output shaft of the DC motor is connected with a reduction gear unit, the output shaft of the reduction gear unit is coaxially connected with a potentiometer. The intelligent electric actuator comprises a micro-control chip and a CAN bus driver. The micro-control chip is connected with a host computer through the CAN bus driver and a CAN bus, receives the control commands of the host computer, generates PWM signals and transmits the signals to the signal demodulation circuit. The potentiometer is connected with the micro-control chip 26 which collects the position signals of the potentiometer, and transmits the position signals to the host computer. The intelligent electric actuator has small volume, high reliability, low power consumption and high intelligence, is suitable for composing distributed control systems, greatly lowers the control pressure of a host control machine, and reduces the leas number of the host control machine.

Description

technical field [0001] The invention relates to an intelligent electric steering gear based on CAN bus communication, which is mainly used in the control systems of aircraft models and humanoid robots, and belongs to the technical field of control of aircraft models and humanoid robots. Background technique [0002] In the aircraft model and humanoid robot control system, the steering gear controlled by PWM wave signal is the main source of power. It is widely used due to its small size, large output torque and high integration. The structure of the steering gear is described in detail in the patent (patent number: 200620058243.1). [0003] In order to make the structure of the steering gear compact, the structure of the traditional steering gear is generally composed of a reduction gear set, a potentiometer, a DC motor, and a control module. The control module of the traditional steering gear such as figure 2 It can be seen from the figure that the control module of the t...

AI Technical Summary

Problems solved by technology

[0006] 1. The control method is complicated, occupying a lot of resources of the upper control computer, and the burden of the upper computer is heavy;

[0007] 2. Suitable for forming a centralized control system, not suitable for forming a distributed control system;

[0009] ●Interference between the control lines is easy to occur, and the steering gear is prone to jitter;

[0010] 3. The position signal cannot be fed back to the host computer, and a large closed-loop control system cannot be formed;

[0011] 4. It is not a real digital electric steering gear, the position of the output shaft of the steering gear is adjusted by the PWM wave duty cycle

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