基于DSP的高精度舵机伺服控制器设计

Design of High Precision Rudder Servo Controller Based on DSP

现代飞行器的快速发展,对舵机的动态性能和精度等特性提出更高的需求。为实现上述需求,提出了一种舵机伺服控制系统的设计方案。简述了由DSP为核心处理器的控制器电路、驱动电路及由旋转变压器等反馈检测电路共同构成的硬件设计方案,控制策略采用由电流环、转速环、位置环构成的3闭环控制结构,其中位置环同时引入转速反馈实现微分控制。试验结果表明该系统性能稳定,控制精度高,有良好的动态特性,并能够对位置反馈中的噪声进行抑制,具有较高的实用价值。

The rapid development of modern aircraft put forward high requirements of the dynamic and precision char- acteristics of servo system. A design scheme of control system for aircraft rudder servo was presented. The hardware circuit consisted of microcontroller unit which based on the DSP, driver unit and the unit of feedback detection such as resolver. And the control strategy adopted three closed loop control structure, including of the current loop, speed loop and position loop. The position loop introduced the speed feedback to realize the differential control. The experimental results show that the system has stable performance, high precision, good dynamic characteristics and can restrain the noise in the position feedback, and practical value.