专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH01306905A PRESSURE CONTROL METHOD 失效
公开(公告)号：JPH01306905A
公开(公告)日：1989-12-11
申请号：JP13820688
申请日：1988-06-03
申请人： OSAKA GAS CO LTD , O G JOHO SYST SOKEN KK
发明人： KONO AKIO , FUJISAWA HIROTAKE , ISUMI TAKASHI , KIKUTA TAKASHI
IPC分类号： G05D16/20
摘要： PURPOSE:To stably bring the pressure on the downstream side of a control valve to a target value by controlling the opening of the valve by proportional integration in such a way that the opening is abuptly changed by the previously set 1st opening changing quantity in the direction in which the change in the downstream-side pressure of the control valve is compensated, and then, corrected by the 2nd opening changing quantity. CONSTITUTION:When the downstream-side pressure P of a control valve changes due to an abrupt change in load, the opening phi1 of the valve is abruptly changed by the 1st opening changing quantity phi11. As a result, the change in the opening phi1 by the 1st opening changing quantity phi11 results in a change in the sign of the differentiated value of the downstream-side pressure P after a delay time T1. Then the opening of the valve is corrected by the 2nd opening changing quantity phi12. As a result, the differentiated value of the downstream-side pressure P of the valve becomes zero due to the change in the opening by the 2nd opening changing quantity phi12 after the delay time T1, leaving the deviation from a target value P0 in the downstream-side pressure P. When the differentiated value becomes zero, the control valve is controlled by proportional integration. As a result, downstream-side pressure of the control valve is brought nearer to the target value P0.

2. 发明专利

JPH01306906A PRESSURE CONTROL METHOD 失效
公开(公告)号：JPH01306906A
公开(公告)日：1989-12-11
申请号：JP13820788
申请日：1988-06-03
申请人： OSAKA GAS CO LTD , O G JOHO SYST SOKEN KK
发明人： KONO AKIO , FUJISAWA HIROTAKE , ISUMI TAKASHI , KIKUTA TAKASHI , GOTO KOZO
IPC分类号： G05D16/20
摘要： PURPOSE:To stably bring the downstream-side pressure of a control valve nearer to a target value by controlling the opening of the valve by proportional integration by a specific method in such a way that the opening is abruptly changed by the previously set 1st opening changing quantity in the direction in which the change in downstream-side pressure is compensated, and then, corrected by the 2nd opening changing quantity. CONSTITUTION:When the downstream-side pressure P of a control valve changes, the opening phi1 of the valve is abruptly changed by the 1st opening changing quantity phi11. After the abrupt change, the opening phi1 is corrected by the 2nd opening changing quantity phi12. The 2nd opening changing quantity is decided from Formula I and, at the same time, the factor phiq of the Formula I is set to a value which changes in steps in corresponding to the magnitude of the deviation Pq of the downstream-side pressure P the delay time T1 after the correction of the opening phi1 by the 2nd opening changing value phi12 estimated from Formula II to a target value P0. Since the opti mum value is selected against the magnitude of the deviation Pq in such way, the differentiated value of the downstream-side pressure of the controlling valve the delay time T1 after the opening is changed by the 2nd opening changing quantity cam be made zero. Therefore, the downstream-side pressure P of the control valve can be brought nearer to the target value P0.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式