有效值准确测量仪表的理论及计算

• 机 构: 哈工大电测专业73级试制小组,北京宣武测振仪器厂
• 出 处: 哈尔滨工业大学学报
• 发表日期: 1977年Z1期
• 关键词: 平方运算 电量 抛物线 均方根值 电工技术 测量仪表 序言 被测量 测量电路 功率

一、序言有效值是一种在工程上十分常见的重要参数。在电工技术中用有效值来表示交流电量(电流、电压、功率等等)的大小。交流电量有效值的测量比较难达到准确的结果。这是因为它是被测量的均方根值,亦即既要对被测量进行平方运算,又要进行积分平均及开方运算,采用简单的电路就难

First, the preamble RMS is a very important engineering parameters. In electrotechnical applications, rms values ​​are used to indicate the amount of alternating current (current, voltage, power, etc.). AC rms measurement of the more difficult to achieve accurate results. This is because it is the root mean square of the measured value, that is, it is necessary to carry out the square operation on the measured value, meanwhile the integral averaging and the square root operation, and it is difficult to adopt a simple circuit