摘要:
In a method and a system for process control comprising in combination a feed-back control in which a manipulated variable is determined in accordance with a deviation of a controlled variable with reference to a target value and a feed-forward control in which a disturbance is detected and a disturbance compensation is determined and used in determining the manipulated variable to counteract the effect of the disturbance, when the control is in a steady state, disturbance compensation is adjusted in such a manner that the difference between the disturbance compensation and the manipulated variable is reduced.
摘要:
A process control apparatus according to the present invention comprises a feed back control system for outputting a feedback control signal which is computed by comparing and adjusting a set value and a process variable, and a feedforward control system for outputting a disturbance compensation signal by detecting and compensating for the disturbance based on a feedforward control model. The gain of the feedback control signal is corrected in response to the magnitude of the disturbance variations by a gain scheduling unit, and the gain of the feedforward control model is controlled by supplying a correction signal which compares and equalizes, at a feedforward control model gain adaptive unit, the disturbance compensation signal and the manipulated variable obtained by adding the disturbance compensation signal and the feedback signal that is gain-corrected by the gain scheduling unit. The feedforward control model comprises a gain memory for memorizing storing the FF model gain correction signal from the feedforward control model gain adaptive unit and an operational means for receiving a correction signal from the gain memory and a disturbance signal to compute and output a disturbance compensation signal. The process control apparatus further includes a FF model gain adaptive mechanism for controlling the supply to the gain memory of the FF model gain correction signal by confirming that the process is in a steady state, and for controlling as well the additive synthesis of the disturbance compensation signal to the feedback control signal when the difference between the disturbance compensation signal and the manipulated quantity exceeds a prescribed value.
摘要:
A method and system of process control comprising in combination a feed-back control in which a deviation of a controlled variable with reference to a target value is applied to a velocity type controller and a manipulated variable is determined in accordance with the output of the controller and a feed-forward control in which a disturbance is detected and a disturbance compensation is determined and added in determining the manipulated variable to counteract the effect of the disturbance. A static compensation component and a dynamic compensation component of the disturbance compensation are separately determined in accordance with the detected disturbance, and the static compensation component is converted to a velocity type signal, and added to the output of the controller to obtain a first sum. The first sum is converted to a position type signal, and added to the dynamic compensation component to obtain a second sum, in accordance with which the manipulated variable is determined.
摘要:
A process controller includes a change fetch circuit for fetching a change in feedforward controlled variable due to a variation in load, and an auto-tuning control circuit for performing auto-tuning for mis-matching of the feedforward control, in accordance with a compensation variable obtained by multiplying a ratio of an adjusted output signal of a feedback control system corrected by the feedforward control to the feedforward controlled variable, with the change in feedforward controlled variable, to determine an optimal next feedforward controlled variable.
摘要:
A manufacturing method of a secondary battery according to the present invention includes a charging/discharging process wherein the secondary battery is arranged to a restraining jig, that restricts an expansion caused on the battery case with respect to at least a part of the battery case and that is configured to be removable from a charging/discharging device with the secondary battery arranged thereto regardless of the magnitude of the internal pressure in the secondary battery; a charging/discharging is performed to the secondary battery with the restraining jig mounted to the charging/discharging device; and after the completion of the charging/discharging, the restraining jig is removed from the charging/discharging device with the secondary battery arranged to the restraining jig.
摘要:
There is provided manufacturing method of battery comprising adhering process (S1) to adhere fluorescent material (leakage indicator including fluorescein) which emits fluorescence in response to predetermined light (ultraviolet radiation) irradiated under condition that electrolyte exists, to at least one portion of a surface on a battery case, and leakage detecting process (S2 through S9) to detect presence/absence of electrolyte leakage with fluorescence which an adhered portion emits in response to the predetermined light (ultraviolet radiation) irradiated on at least the adhered portion which has adhesion of the fluorescent material (leakage indicator including fluorescein), out of the surface on the battery case.
摘要:
There is provided manufacturing method of battery comprising adhering process (S1) to adhere fluorescent material (leakage indicator including fluorescein) which emits fluorescence in response to predetermined light (ultraviolet radiation) irradiated under condition that electrolyte exists, to at least one portion of a surface on a battery case, and leakage detecting process (S2 through S9) to detect presence/absence of electrolyte leakage with fluorescence which an adhered portion emits in response to the predetermined light (ultraviolet radiation) irradiated on at least the adhered portion which has adhesion of the fluorescent material (leakage indicator including fluorescein), out of the surface on the battery case.
摘要:
A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers.
摘要:
A substrate for a transfer mask, which comprises a first silicon layer formed of monocrystalline silicon, a silicon oxide film formed on the first silicon layer and having a thickness ranging from 0.2 to 0.8 &mgr;m, and a second silicon layer formed on the silicon oxide film. A transfer mask which is manufactured by making use of this substrate is featured in that it is possible to prevent a transfer pattern from being cracked or destroyed due to stress from the silicon oxide film on the occasion of manufacturing the transfer mask, thereby providing a defect-free transfer mask.
摘要:
A communication light detecting device interconnecting light transmission paths and collocated therebetween, comprises: an optical coupling body including a core portion for photo coupling with the light transmission paths, and a light extracting portion for extracting a part of the communication light as a leakage light; and a light detecting portion having a light receiving member for receiving the leakage light. The light extracting portion is preferable to possess a lower refractive index than that of the core portion. Besides, the light extracting portion is preferable to include a light detecting use groove with a groove width of 50 μm or more and 140 μm or less formed by cutting and separating the core portion. Besides, the light extracting portion is preferable to be the optical coupling body in which outer diameter of the core portion is different from the outer diameter of a core of the light transmission path.