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概述在各种各样的控制系统中,都要用到驱动执行元件——电机的功率放大器。目前国内外广泛采用的功放有脉宽调制功放,可控硅功放和线性功放三种,究竟采用那种功放合适,要根据具体情况而定。 采用力矩电机以及各种低压小功率的直流电机作执行元件的系统,最好选用线性功放,即晶体管功放。该功放和脉宽调制功放,可控硅功放相比,它的特点是,电流和电压在负载中连续,线性度优良,动态性能好,
Overview In a variety of control systems, the drive actuator - the motor’s power amplifier is used. At present, widely used power amplifier at home and abroad have pulse width modulation power amplifier, thyristor amplifier and linear amplifier three, what kind of power amplifier appropriate, according to the specific circumstances. The use of torque motors and a variety of low-voltage low-power DC motor for the implementation of components of the system, the best choice of linear amplifier, transistor amplifier. The power amplifier and PWM amplifier, compared to silicon amplifier, which is characterized by the current and voltage in the continuous load, excellent linearity, good dynamic performance,