Communication control circuit for laser tracker

Abstract

The invention discloses a communication control circuit for a laser tracker, which comprises a digital signal processor, an acquisition module, a communication module, and a signal driving module. The control part of the digital signal processor of the communication control circuit only shoulders closed-loop control of the outermost layer position, and speed control and current closed-loop control are realized by the communication module in outer servo driving. In addition, the communication control circuit of the invention also adopts a modular design, and a testability design and an extensibility design are introduced. The circuit of the invention has complete integrated functions, the control part only shoulders closed-loop control of the outermost layer position, computational burden and real-time performance are reduced after decomposition, and hardware foundation is laid for adopting advanced control algorithm and improving the control frequency; monitoring on operation states of each module and the overall body is enhanced, and the debugging efficiency and the troubleshooting efficiency are improved; and the servo system which does not have a high real-time performance requirement can be directly used a current, speed and position three-closed loop integrated control and communication unit.

Description

technical field [0001] The present invention relates to the technical field of communication control, and more specifically relates to a communication control circuit of a laser tracker. Precision electromechanical communication control system. Background technique [0002] The laser tracker has the characteristics of large measurement range, high precision, good dynamic performance, and real-time on-site measurement. It has been widely used in high-end intelligent manufacturing industries such as aerospace, rail transit, and shipbuilding. It can not only carry out high-precision three-dimensional measurement of space static objects, but also carry out tracking and measurement of moving objects. [0003] The communication control circuit is one of the core units of the precision servo system of the laser tracker. Its main function is to complete the precision tracking position closed-loop control, power module switch and logic control, PWM pulse width modulation, CanOPEN co...

AI Technical Summary

Problems solved by technology

But at present, the servo control circuit in the domestic self-developed laser tracker still has the following deficiencies: (1) There is no integrated communication control function of CANopen, TCP / IP, parallel communication and DA; (2) The control is affected by hardware and control algorithms The frequency is low; (3) There is no sequential start-stop or logic control function for the servo system power module; (4) The circuit testability design is lacking, and debugging and troubleshooting are inconvenient; (5) The universal expansion function is insufficient

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