The phase precision of code sequence as well as fairly ideal response function are guaranteed by high accuracy of DATA-2020 and DATA-6000.The main reason of some deviation between experiments and theory is caused by the transient response and time delay characteristics of the ultrasonic transducer.

The performance and major parameter of adaptive filter acquired by using Widrow LMS algorithm is limited at the condition of s(j) as an ideal response. But, in adaptive noise cancelling system, using LMS algorithm d(j)-s(j)+n0 , with noise n0, is no longer an ideal expect response.

In this work, electrical equations are derived for the ideal response of PZT95/5 ferroelectric ceramics with capacitive load. It is assumed in analysis that charge is released completely and instantaneously at the shock front. Explosive shock-wave techniques have also been used to pulse charging capacitors from the shock de-polarization of PZT95/5 ferroelectric ceramics in experiments.

(3)when dealing with the pressure,the ideal response approach was to seek the help of psychological counsellors,but they didn't want to do like this in real life,the most unsatisfactory response approach was to seek the help of form master and assistant,meanwhile,they didn't want to do like this else in real life.

The performance and major parameter of adaptive filter acquired by using Widrow LMS algorithm is limited at the condition of s(j) as an ideal response. But, in adaptive noise cancelling system, using LMS algorithm d(j)-s(j)+n0 , with noise n0, is no longer an ideal expect response. There is a weight overshoot causing by LMS algorithm and an error causing by noise n0 in adaptive filter. In this paper, at first the error caused by noise n0 is discussed, then how to select the optimal parameters...

The performance and major parameter of adaptive filter acquired by using Widrow LMS algorithm is limited at the condition of s(j) as an ideal response. But, in adaptive noise cancelling system, using LMS algorithm d(j)-s(j)+n0 , with noise n0, is no longer an ideal expect response. There is a weight overshoot causing by LMS algorithm and an error causing by noise n0 in adaptive filter. In this paper, at first the error caused by noise n0 is discussed, then how to select the optimal parameters to obtain the best performance, finally the result is tested.

A simple and convenient method to gain bulk acoustic wave Barker code sequence is presented,corresponding results of correlation processing are given too. The transducer response of unit electric pulse is used as unit code of acoustic signal to constitute Barker code sequence. The phase precision of code sequence as well as fairly ideal response function are guaranteed by high accuracy of DATA-2020 and DATA-6000.The main reason of some deviation between experiments and theory is caused by the transient...

A simple and convenient method to gain bulk acoustic wave Barker code sequence is presented,corresponding results of correlation processing are given too. The transducer response of unit electric pulse is used as unit code of acoustic signal to constitute Barker code sequence. The phase precision of code sequence as well as fairly ideal response function are guaranteed by high accuracy of DATA-2020 and DATA-6000.The main reason of some deviation between experiments and theory is caused by the transient response and time delay characteristics of the ultrasonic transducer.

An optimal controller has been designed to regulate a category of control systems withthe characteristics of static disequilibrium. Modern optimal state feedback and output feedback controllers optimal for time-multiplied performance indices and the performance indexsensitivity to parameter changes were applied to analyse the system. The construction of thecontrol system has been carried out using available system components. The results hasshown that the responses of the actual control system are found...

An optimal controller has been designed to regulate a category of control systems withthe characteristics of static disequilibrium. Modern optimal state feedback and output feedback controllers optimal for time-multiplied performance indices and the performance indexsensitivity to parameter changes were applied to analyse the system. The construction of thecontrol system has been carried out using available system components. The results hasshown that the responses of the actual control system are found to agree well with the simulated ideal responses of the system. This category of control systems can be used in the fieldsof aviation and navigation.