ALC12DE-010-1312 伺服放大器 反馈信号

☆型号：ALC12DE-010-1312 伺服放大器 反馈信号

【产品详情】

伺服放大器的作用是将多个输入信号与反馈信号进行综合并加以放大，根据综合信号极性的不同，输出相应的信号控制伺服电机正转或反转。当输入信号和反馈信号相平衡时，伺服电机停止转动，执行机构输出轴便稳定在一定位置上。

伺服放大器组要由前置磁放大器、触发器、晶闸管主回路和电源等部分组成，其组成如下图所示。伺服放大器组成框图为适应复杂的多参数调节的需要，伺服放大器设置由三个输入信号通道和一个位置反馈信号通道。因此，它可以同时输入三个输入信号和一个位置反馈信号。在单参数的简单调节系统中，只使用其中一个输入通道和反馈通道。

在伺服放大器中，前置磁放大器把三个输入信号和一个反馈信号综合为偏差信号，并放大为电压信号U22-21输出。此输出电压同时经触发器1(或2)转换成触发脉冲去控制晶闸管主回路1(或2)的晶闸管导通，从而将交流220V电源加到两相伺服电机绕组上，驱动两相伺服电动机转动。当△1>0时，U22-21>0，触发器2和主回路2工作，两相伺服电机正转；当△1<0时，，触发器1和主回路1工作，两相伺服电机反转；两组触发器和两组晶闸管主回路的电路组成及参数完全相同，所以当输入信号和与位置反馈电流If相平衡，前置磁放大器的输出U22-21≈0，两触发器均无触发脉冲输出，主回路1和2中的晶闸管阻断，两相伺服电动机的电源断开，电动机停止转动。

☆型号：ALC12DE-010-1312 伺服放大器 反馈信号

【英文介绍】

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. In order 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.

☆型号：ALC12DE-010-1312 伺服放大器 反馈信号

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