电气传动中有关电动机转动惯量的问题

一.两个重要性质：
1.工作压力取决于负载,而与流入的液体多少无关.
2.活塞的运动速度v取决于进入液压（气压）缸（马达）的流量q,而与液体压力p大小无关.
二.优缺点
优点：
1.功率体积比大.
2.可以实现无级调速.
3.容易实现自动化.
4.平稳,寿命长.
5.易于实现过载保护.
6.布置灵活.
缺点：
1．石油资源有限,可燃.
2．不能保证严格的传动比.
3．易对环境造成污染.
4．液压传动系统成本高
5．要求有单独的能源,使用不方便.
6．故障不易检查排除.

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