Control method and control device for electric actuator based on torque control
An electric actuator, torque control technology, applied in valve operation/release devices, valve devices, engine components, etc., can solve the problem of inability to realize real-time monitoring and real-time adjustment of valve opening and closing torque, unable to monitor, unable to know Valve opening and closing actual torque, etc.
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Embodiment 1
[0058] Control methods for electric actuators based on torque control include:
[0059] Step 1: Initialize the valve opening torque estimated value Ta, the reducer torque loss estimated value, the transmission mechanism torque loss estimated value; the initialized system heat loss estimated value; the initialized heat loss sampling time interval T and sampling duration t;
[0060] Step 2: According to the estimated value and sampling provided in Step 1, the microcontroller calculates the total demand torque,
[0061] The function of the output torque in the microcontroller is T
[0062] Tn=K(Px-Py)
[0063] Among them, in the function Tn:
[0064] Tn is the total demand torque;
[0065] K is the proportional coefficient obtained by actuator calibration;
[0066] Px is the power when the actuator moves;
[0067] Py is the static power when the actuator is not in motion;
[0068] Step 3: The single-chip microcomputer controls the motor to output the total demand torque T c...
Embodiment 2
[0081] The electric actuator control device based on torque control is used to control the output torque of the electric actuator. The electric actuator includes a motor, a reducer connected to the motor, and a worm gear transmission actuator connected to the reducer. The worm gear transmission actuator The center of the worm wheel is provided with a shaft sleeve that can move along the mandrel shaft of the worm wheel. The control device includes a single-chip microcomputer, a power module, a control module, an indication module, a detection module, a display and input module, an angle feedback circuit, an external module and an execution module. The power supply module, control module, indication module, detection module, display and input module and external modules are all connected to the single chip microcomputer respectively; where:
[0082] The power module is a 380V power supply with its own rectification circuit;
[0083] The control module includes 4-20mA control cir...
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