On the basis of this, injecting frequency conversion signal method on measuring capacitive current is selected to use here. It is reliable and its error is small, timeliness is good.
在此基础上，选择了对地电容电流测量的注入变频信号法，该测量方法具有测量误差小、实时性良好、安全可靠的特点。
The experimental tests and field tests show that the method of injecting signal has the higher precision and stability.
试验测试结果表明，该方法具有较高的测量准确度和稳定性。
The advantage of the method is that the dynamic and steady properties of the time optimal control system are not affected by injecting the continuous APAZ signal into it.
这种方法的优点是连续的APAZ 信号的加入并不影响时间最优控制系统的动态和稳态特性。
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