Electric actuator with potentiometer and control method of electric actuator

Abstract

The invention relates to an electric actuator with a potentiometer and a control method of the electric actuator. The electric actuator comprises control circuit boards, a transmission mechanism, an output shaft and a motor. The motor is connected with the transmission mechanism and drives the output shaft to rotate through the transmission mechanism, the control circuit boards are arranged on the output shaft, and the hollow potentiometer is fixedly and coaxially installed on the output shaft. Each control circuit board comprises a positioning module, a user input module, a micro control unit (MCU), a power module and a motor drive module, wherein the MCU is connected with the positioning module, the user input module, the power module and the motor drive module; an output end of the power module is connected to the MCU and the motor drive module; and the MCU acquires position signals through the positioning module and acquires control signals through the user input module. According to the electric actuator with the potentiometer and the control method of the electric actuator, the control circuit boards in a plurality of control modes and a plurality of valve circulation forms are integrated together and selected through a toggle switch, so that the production efficiency is greatly improved, the management cost is reduced, and standardized production of the electric actuator is achieved.

Description

technical field [0001] The invention belongs to the field of electric actuators, in particular to an electric actuator with a potentiometer and a control method thereof. Background technique [0002] Electric actuator is a driving device that provides linear or rotary motion. Traditional electric actuators usually use mechanical switches, such as reed positioning, micro switch positioning, etc. The main structure generally includes cams, positioning mechanisms, and control circuit boards. The cam is vertically installed on the control circuit board, and a positioning mechanism is vertically arranged on the control circuit board on one side of the cam. When the cam rotates, it touches a reed or an interface of the positioning mechanism, thereby generating a control signal. [0003] The above-mentioned positioning method has the following disadvantages: 1. The mechanical switch is large in size and occupies most of the space inside the actuator, which increases the volume of t...

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Problems solved by technology

[0003] The above positioning method has the following disadvantages: 1. The mechanical switch is large in size and occupies most of the space inside the actuator, which increases the volume of the actuator; 2. The structure of the reed positioning method is simple, but the installation and debugging process is complicated. Short service life; although the installation and debugging process of the micro switch positioning method is simple, the mechanical structure is complex, the mechanical life is short, and the repeated positioning accuracy of the two positioning methods is low; A circulation form corresponds to a control circuit board, so a variety of control circuit boards are produced; 4. There are four control connection methods for traditional electric actuators, such as Figure 1 to Figure 4 As shown, one connection method corresponds to one control circuit board, so it is necessary to prepare a large amount of inventory, thereby reducing production efficiency and increasing management costs

[0004] After searching, a patent document related to the content of this patent was found. The Chinese patent with the publication number CN2716876 was disclosed. The patent name is: a CAN bus type intelligent electric actuator control device. The control accuracy of the electric valve controller is low, the wiring and maintenance are inconvenient, and it is designed for the lack of network communication

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