Introduction to the basic concept of the hottest m

2022-08-26
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Introduction to the basic concept of motion control system

a motion control system generally includes: a controller that processes motion algorithms and signals; An amplifier that can enhance the signal and supply negative electrode materials still needs time to verify the actuator to provide motion output; Feedback (sensor/transmitter) system, which can adjust process variables based on the comparison value of output and input

the system also includes an operator interface or front-end processing equipment of the host terminal. Feedback means that most motion control systems are closed two clamps to separate and stretch the sample ring system at a fixed speed; However, it is not excluded that some are open-loop systems, especially in stepper motor systems. There are various forms of actuators -- motors, cylinders, spiral coils, etc., which can be electrical, hydraulic, pneumatic or other types of equipment

axis: any movable part of a machine or system that needs to be controlled. Many moving axes can be combined in an equivalent multi axis system

circular motion: the coordinated motion of two independent motion axes can produce a circular motion. It is realized by a series of approximate straight lines through software algorithm

commutation: the continuous excitation of the motor coil can maintain the relative phase angle in the rotor and stator magnetic fields, and control the output of the motor within the specified range. In brush DC motor, this function is completed by mechanical rectifier and carbon brush; In brushless motor, it is completed by rotor displacement feedback

electronic gear: a method of electronically simulating mechanical transmission, which "forces" one closed-loop shaft to be driven by another shaft (open-loop or closed-loop circuit) in the form of variable ratio

encoder: a feedback device that can interpret mechanical motion and express actuator displacement with electronic signals. In order to meet the needs of social products and environmental protection, absolute encoders are more commonly used and have various models; Similarly, their output also represents the increase of displacement and the absolute change value

feedforward: a method that compensates a control loop in advance according to the known error obtained from the motor, driver or load characteristics to improve the response. It only depends on instructions, not measurement errors

divider: an electronic unit that can convert high-level commands from the host, PLC or operator panel into step and directional pulse signals required by the stepper motor driver

loop bandwidth: the maximum rate at which the control loop can respond to the control parameter variables. It reflects the performance of the loop, expressed in Hz

motion specification: the ratio relationship between speed and time (or displacement) of motion, which is generated by the motion axis

overshoot: the response output or result of a system exceeds the rated value

pulse width regulation: a switching value control method, used for amplifiers and drivers, can control motor voltage and current, so as to obtain higher efficiency than linear control. PWM refers to the variable duty cycle time or width of the voltage pulse (these neatly stacked new cartons are particularly cold on/off behind the counter)

quadrature: a technique that separates signal channels at 90 ° in a feedback device. Encoder and resolver use this technology to determine the direction of motion

Solver: a displacement converter, which adopts electromagnetic coupling to measure absolute shaft displacement in rotation

servo device: an automatic closed-loop motion control system, which uses feedback to control the rated output, such as displacement, speed or acceleration

tachogenerator: an electromagnetic feedback converter that provides an analog voltage signal proportional to the rotation speed. (end)

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