【作者】 姜雅彦；

【导师】 刘书桂；

【作者基本信息】 天津大学 ， 仪器仪表， 2004， 硕士

【摘要】 本论文所研究的QIC数控系统，以32位DSP控制卡为核心，具有丰富的控制功能和保护功能；采用PID参数调节及速度、加速度前馈控制模式；采用成熟的PWM驱动控制方式，可以实现连续轨迹控制功能。本论文就QIC数控系统展开研究，主要研究内容有：1，设计了驱动电源智能控制功能：保证在测量机受软件控制的情况下才能给驱动器加电，当退出测量软件时驱动器自动断电。可防止当计算机开关机或复位时可能发生的机器窜动和飞车，提高了系统的可靠性。2，设计了精密的测头处理电路：用两级触发器组成的防抖电路，不用滤波电容，可将硬件的延迟缩至最短，允许用户在不同的速度下测量，提高了测量精度。3，设计了可靠的开关控制电路：所有开关根据不同的逻辑，分别与继电器的线圈或触点串联或并联，各开关的控制只起瞬间作用，其后的控制由继电器的触点完成，降低了对开关质量的要求，提高了系统的可靠性。4，研究并试验了P（比例）参数、I（积分）参数、D（微分）参数、Vel FF（速度前馈）、Accel FF（加速度前馈）对机器运动性能的影响及调试方法。5，提供了直观方便的图形调试软件：所有的配置和参数的改变都可在窗口中方便的进行；所有的运行状态和保护状态都在计算机屏幕上显示；对照运行曲线进行PID参数和速度、加速度的调节。这些功能有效地提高了系统调试的效率与质量。6，用VC++平台开发了专用的控制软件：提供了测头保护、超速保护、计数保护、行程保护、气压保护、跟随保护、到位保护等完善的保护功能；支持触发测头、扫描测头、激光测头等；并可与PC-DMIS、QUINDOS、EZDMIS等著名的测量软件联机，以满足不同的用户需求。更多还原

【Abstract】 The QIC numerical control system is researched in this paper. It uses the 32 bits DSP control chip as the nucleus. This system possesses abundant control functions and protection fuctions. This system can realise continue track control by adopting PID parameter adjusting, velocity and acceleration front feedback control mode, mature PWM driver control mode.This paper studied the QIC numerical control system. The main study contents is as follows:1. The driven power intelligent control function is designed. It ensure that the power is supplied for the driver only on the condition of CMM is controlled by the software and the power is shut off when CMM exit from the software. This prevent CMM ‘s flee actions and runaway when computer is turned off or reset.2. The probe presively processing electrocircuit is disigned. It is not the filter capacitance but the twice trigger that is used to compose the defend quiver circuit. This method minimizes the hardware’s delay and permit the user to carry out measuring under different speed. It increases the measuring precision. 3. The swith reliable control circuit is disigned. All of the swith are in serial or parallel connection with the winding or touch point of relay respectively basing on different logic. Each swith take actions only for an instant. The later control is achieved by touch point of relay. This reduce the requirement of the swith’s quality and enhance the reliability of sysytem.4. The influence and debug method of PID ,Vel FF, Accel FF on machine movement performance are studied. 5. The convenient graphics debug software is provided. All of the configure and the change of parameters are all able to be carried out conveniently in the window. All of the running status and the protection status are displayed on the screen. Compared with the running curve, the PID parameter, velocity and the accelerarity can be adjusted. The above functions enhance the efficiency and the quality of sysytem.6. The special control software is developed base on VC++. The software has the following fuctions: probe protection, overspeed protection, count protection, travel protection, air pressure protection, follow error protecttion, in position protection and so on. It also sustain touch probe, scan probe, laser probe and so on. It also can be united with famous measuring softwares such as PC-DMIS, QUINDOS, EZDMIS in order to satisfy different <WP=5>user’s requirements.更多还原