SE04-10WA 衡量伺服控制系统性能

概述：

衡量伺服控制系统性能的主要指标系统精度、稳定性、响应特性、工作频率四大方面，特别在频带宽度和

精度方面。

频带宽度简称带宽，由系统频率响应特性来规定，反映伺服系统的跟踪的快速性。带宽越大,快速性越

好。伺服系统的带宽主要受控制对象和执行机构的惯性的限制。惯性越大，带宽越窄。-般伺服系统的带

宽小于15赫，大型设备伺服系统的带宽则在1 ~ 2赫以下。自20世纪70年代以来,由于发展了力矩电机及高

灵敏度测速机，使伺服系统实现了直接驱动,革除或减小了齿隙和弹性变形等非线性因素，使带宽达到50

赫，并成功应用在远程导弹、人造卫星、精密指挥仪等场所。伺服系统的精度主要决定于所用的测元件

的精度。因此,在伺服系统中必须采用高精度的测元件,如精密电位器、自整角机和旋转变压器等。此

外，也可采取附加措施来提高系统的精度，例如将测量元件(如自整角机)的测量轴通过减速器与转轴相

连,使转轴的转角得到放大，来提高相对测量精度。采用这种方案的伺服系统称为精测粗测系统或双通道

系统。通过减速器与转轴啮合的测角线路称精读数通道，直接取自转轴的测角线路称粗读数通道。

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SE04-10WA 衡量伺服控制系统性能

The main indicators to measure the performance of servo control system are system accuracy, stability, response characteristics, and working frequency, especially in the frequency band width and

Precision.

The frequency band width is referred to as bandwidth, which is defined by the frequency response characteristics of the system and reflects the rapidity of the tracking of the servo system. The larger the bandwidth, the faster it is

Yes. The bandwidth of the servo system is mainly limited by the inertia of the control object and the actuator. The greater the inertia, the narrower the bandwidth. - General servo belt

The width is less than 15 Hz, and the bandwidth of the servo system of large equipment is below 1 ~ 2 Hz. Since the 1970s, due to the development of torque motors and high

The sensitivity tachometer makes the servo system drive directly, eliminates or reduces the nonlinear factors such as backlash and elastic deformation, and makes the bandwidth reach 50

And successfully applied in long-range missiles, satellites, precision director and other places. The accuracy of the servo system is mainly determined by the measuring components used

The precision of... Therefore, high precision measuring components must be used in the servo system, such as precision potentiometer, selsyn machine and rotary transformer. this

In addition, additional measures can also be taken to improve the accuracy of the system, such as the measuring shaft of the measuring element (such as the selsyn machine) through the reducer and the rotating shaft

The rotation Angle of the rotating shaft is amplified to improve the relative measurement accuracy. The servo system using this scheme is called the fine coarse measuring system or dual channel

System. The Angle measurement line meshing with the rotating shaft through the reducer is called the fine reading channel, and the Angle measurement line directly taken from the rotating shaft is called the coarse reading channel.

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