In order to improve processing quality of high-speed and high-precision equipment,CMAC is combined with PID to become the control strategy including PID and CMAC based on its characteristics of no accurate mathematical model of controlled object,strong nonlinear fitting ability and highly adaptability in operating conditions;based on the Open Servo function of Turbo PMAC,the control strategy including PID and CMAC has been realized on Turbo PMAC motion controller.The test results show that the control strategy including PID and CMAC can better improve the system positioning performance and following performance.

The tracking performance of the traditional Servo Moving System is Likely to be affected by the outside interference,speed changes,non-linear and other factors.The on-line adjustment algorithm is proposed to switch real-time control parameters based on speed changes,and the algorithm is realized on PMAC controller.Experiments show that this algorithm is effective to improve the tracking performance of Servo Moving System.

The rotary mounting head is one kind of the multi-axis mounting head, and it is mainly applicable to the placement of the relatively small SMC/SMD. The image of the 12-axis is processed together synchronously in order to save the processing time of shooting and computing. Continuous grasping and placing in a working cycle decrease the movement time so that the efficiency of the placement can greatly be improved. The built-in vision system of the placement machine is used to perform the online accuracy test and compensation, resulting in great improvement of placement accuracy.

According to the multidisciplinary characteristics of placement machine, a development sys- tem of the digital prototype on the placement machine is built. In the design phase, the multidisci- plinary design and simulation are performed to check and test the product functionality and perfor- mance. The various system parameters are coordinated to make our products meet the design indica- tors, and the conflict and interference between the various disciplines are solved and the best coupling is achieved. This will significantly shorten the product development cycle, reduce the product develop- ment costs, and improve the product quality and the system performance.

In response to the problem that the dynamic model for placement machine is unknown and cannot be measured directly in frequency domain,a servo identification system is built based on the placement machine,including generation and loading of excitation signals,data acquisition,plant identification and analysis of the general control performance.The use of servo identification system can estimate the dynamic model and analyze the control performance of the servo system quantitatively.The servo identification system provides condition for intuitively tuning the control parameters and applying advanced servo control strategy,it also provides an effective means of improving the placement efficiency and precision.