Second, the control system is designed. the vibrating frequency is adapted by control appratus on the basis of the result of parameter estimates.thus the machine can pile the column automatically .

• 利用控制装置，然后根据参数估计的结果来改变振动锤的振动频率，实现自动打桩，这样可以提高振动锤的打桩效率和质量；