发明名称 |
Improved proportional integral-derivative control apparatus |
摘要 |
A process control apparatus is provided which has a PID controller to which is supplied a sampled signal of a control deviation signal of a process value signal and a reference signal and which generates a PID control signal according to sampled-value PID control constants. A non-linear controller is connected in parallel with the PID controller. A sum signal of the output signals from the PID controller and the non-linear controller is supplied to a process through a holding circuit. The process control apparatus further includes a circuit for identifying the dynamic characteristic of the process according to the sum signal and the sampled signal of the process value, and a circuit for calculating a transfer function of the process in the Laplace operator domain and for determining the sampled-value PID constants of the PID controller according to the dynamic characteristic.
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申请公布号 |
US4466054(A) |
申请公布日期 |
1984.08.14 |
申请号 |
US19820381445 |
申请日期 |
1982.05.24 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
SHIGEMASA, TAKASHI;TAKAGI, YASUO |
分类号 |
G05B13/00;G05B13/02;(IPC1-7):G05B13/04 |
主分类号 |
G05B13/00 |
代理机构 |
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