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SMC9915-501-000-1D-1 servo amplifier GLENTEK

SMC9915-501-000-1D-1 servo amplifier GLENTEK

Manufacturers ：GLENTEK
Model(s)  ：SMC9915-501-000-1D-1
Additional Information ：servo amplifier
Estimated Shipping Size
Dimensions: 263 × 58 × 28mm
Weight:.4.3 kg
Country of Origin: United States of America

 

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Categories: , SKU: SMC9915-501-000-1D-1

Description

Overview

Essential details：SMC9915-501-000-1D-1 servo amplifier GLENTEK

The function of servo amplifier is to synthesize and amplify multiple input signals and feedback signals, and output corresponding signals to control the servo motor forward or reverse according to the polarity of the integrated signal. When the input signal and the feedback signal are balanced, the servo motor stops rotating, and the output shaft of the actuator is stable in a certain position.

The servo amplifier group is composed of a pre-magnetic amplifier, a trigger, a main circuit of thyristor and a power supply, as shown in the figure below. Servo amplifier block diagram
To meet the needs of complex multi-parameter regulation, the servo amplifier is set up by three input signal channels and one position feedback signal channel. Therefore, it can input three input signals and a position feedback signal simultaneously. In a simple regulation system with one parameter, only one input channel and one feedback channel are used.

In the servo amplifier, the pre-magnetic amplifier combines three input signals and one feedback signal into a deviation signal and amplifies it into a voltage signal U22-21 output. At the same time, the output voltage is converted into a trigger pulse by trigger 1(or 2) to control the thyristor turn-on of the main circuit 1(or 2) of the thyristor, so that the AC 220V power supply is added to the winding of the two-phase servo motor to drive the two-phase servo motor to rotate. When △1>0, U22-21>0, trigger 2 and main loop 2 work, and the two-phase servo motor is turning forward; When △1<0, trigger 1 and main loop 1 work, and the two-phase servo motor reverses; The circuit composition and parameters of the two sets of triggers and the two sets of thyristor main loop are exactly the same, so when the input signal and the position feedback current If are balanced, the output of the pre-magnetic amplifier U22-21≈0, there is no trigger pulse output of the two triggers, the thyristors in the main loop 1 and 2 are blocked, the power supply of the two-phase servo motor is disconnected, and the motor stops rotating.

It can be seen that the servo amplifier is equivalent to a three-position contactless relay, and has a great power amplification ability.

SMC9915-501-000-1D-1

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sunny  He

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SMC9915-501-000-1D-1 servo amplifier GLENTEK

Servo drive is a high-end product of modern transmission technology, which is widely used in industrial robots and CNC machining centers and other automation equipment. In particular, the servo drive used to control AC permanent magnet synchronous motor has become a research hotspot at home and abroad. The current, speed and position-3 closed-loop control algorithm based on vector control is widely used in the design of AC servo drivers. Whether the speed closed-loop design in this algorithm is reasonable or not plays a key role in the whole servo control system, especially in the performance of speed control.

servo drives (servo drives), also known as “servo controller”, “servo amplifier”, is a controller used to control the servo motor, its role is similar to the frequency converter acting on the ordinary AC motor, is a part of the servo system, mainly used in high-precision positioning system. Generally, the servo motor is controlled through three ways of position, speed and torque to achieve high-precision transmission system positioning, and it is currently a high-end product of transmission technology.

In the speed closed loop of servo drive, the real-time speed measurement accuracy of motor rotor is very important to improve the dynamic and static characteristics of speed control of speed ring. In order to find the balance between measurement accuracy and system cost, incremental photoelectric encoder is generally used as the speed measurement sensor, and its corresponding common speed measurement method is M/T speed measurement. Although M/T velocity measurement method has a certain measurement accuracy and a wide measurement range, but this method has its inherent defects, including: 1) the speed measurement cycle must detect at least one complete code pulse, limiting the minimum measurable speed; 2) The timer switches of the two control systems used for speed measurement are difficult to maintain strict synchronization, and the accuracy of speed measurement cannot be guaranteed in the measurement occasions with large speed changes. Therefore, it is difficult to improve the performance of servo drive speed following and control by using the traditional speed loop design method.

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