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WO/2002/070885A1 |
An engine (22) with transport delay represented by a delay period is controlled with a controller (28) in the feed-forward path and a compensator (42) in a negative inner feedback loop around the controller. The controller generates a co...
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WO/2002/058440A1 |
A method of feeding a fluorescent lamp, wherein the actual power through the lamp is measured, an actual power value is determined by means of a moving weighted average of a series of most recently measured actual power values, wherein a...
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WO/2002/054969A1 |
A comprehensive system (10) for the growing, analyzing, storing, validating and distributing of cells or tissues for a variety of purposes, in which the comprehensive system (10) generally uses a macrocontainer (12) for each of the steps...
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WO/2002/025389A1 |
In digital servo in which an output equation yd[k]=C x[k]+D ud[k], and a state equation x[k+1]=A x[k]+B ud[k] are executed, in order to reduce the average time lag that a control signal has, the second term D ud[k] (hereinafter referred ...
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WO/2002/025384A2 |
Process control methods and apparatus for controlling batch processes including batch heating processes. The present invention includes iterative learning control (ILC) techniques to provide improved run-to-run process control. One metho...
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WO/2002/023289A2 |
A method is provided, the method comprising sampling (110) at least one parameter characteristic of processing performed on a workpiece in at least one processing step (105), and modeling the at least one characteristic parameter sampled...
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WO/2002/017023A1 |
A controlling device of high follow-up accuracy the prediction accuracy of which does not degraded by an FF signal when the controlled object is feedforward-controlled. A prediction control device (1) has a feedforward signal generation ...
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WO/2002/009207A2 |
A method and apparatus is provided for an electrochemical cell system. The electrochemical cell system includes: an electrochemical cell; an energy source configured for providing a quantity of energy to the electrochemical cell; a sensi...
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WO/2001/098844A2 |
Methods of designing the structure of multiple-input multiple-output (MIMO) PID controllers and methods of finding the optimal values for the MIMO PID parameters are disclosed. The optimal values of MIMO PID parameters are obtained by us...
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WO/2001/047110A2 |
A device characteristic changing apparatus is provided for changing a characteristic of a device (1). The device characteristic changing apparatus (3) comprises a time scale generator unit (32) for generating a time scale on which a devi...
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WO/2001/035175A1 |
A time domain formulation for the multichannel feedforward control problem (Figure 1) is used to derive an optimality condition for the least squares controller. It is also used to motivate an instantaneous steepest descent algorithm for...
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WO/2001/035176A2 |
A servo control apparatus and method controls systems at least partially on the basis of an observable variable that has an absolute value functional relationship with the controlled variable and does not change sign for positive and neg...
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WO/2001/031495A1 |
A filter is disclosed for recursive state estimation of a process by matrix factorization. The filter preferably takes the general form of P = XY, where P is a matrix of previous state and/or current observations, Y is a matrix of functi...
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WO/2001/009529A1 |
A controller of a magnetic bearing changes the sampling rate of a DSP (4) according to the change in the number of rotations of a rotating member (1). As a result, the frequency range to be attenuated by a notch filter (42), i.e., a digi...
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WO/2000/023855A1 |
The response delay due to a proportional element of a numerical control device is preview-compensated and made to approach zero, thereby solving industrial problems caused by the response delay. When the proportional element has a propor...
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WO1999044105A9 |
To output the manipulated variable calculated by an arithmetic unit (U) including a nonvolatile memory device (M) by inputting a desired value (S), a controlled variable (R), and a disturbance value (D), a response function is identified...
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WO/2000/002104A1 |
When calculating an operation value that can settle a predicted value of a control value to a target value for outputting to an operating means by using a control value, an operation value and an available disturbance value, the operatio...
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WO/1999/050720A1 |
A dynamic system controller apparatus includes a controller in a portable housing having an external sensor input and an output for control of the dynamic system. The control operations of the controller include gain values which are adj...
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WO/1999/046647A1 |
In order to output a value calculated by using a controlled variable, a manipulated variable and a usable disturbance value and used to bring a predicted value of the controlled variable into agreement with or close to a desired value S ...
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WO/1999/008267A1 |
A servo system in a disc drive (110) provides robust servo control during track following operations. The disc drive (110) includes a rotatable disc (112) having a disc surface (180, 182) with information arranged in tracks on the disc s...
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WO/1999/008268A1 |
A method of implementing a model-based servo controller (170, 174, 190) in a digital signal processor is a disc drive (110) includes obtaining matrices for a discrete-time state-space realization of the servo controller (170, 174, 190). ...
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WO/1999/008269A1 |
A system and method validate a model used in implementing a model-based servo controller (190) in a disc drive (110). A nominal model is first constructed. The nominal model is augmented with an uncertainty description (202, 204) to char...
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WO/1998/010340A1 |
The invention relates to a device for displacing an object, which device includes a drive device for moving the object along an axis of motion, a control unit which is coupled to the drive device, a set-point generator which is coupled t...
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WO/1997/042553A1 |
A method for providing independent static and dynamic models in a prediction, control and optimization environment utilizes an independent static model (20) and an independent dynamic model (22). The static model (20) is a rigorous predi...
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WO/1997/039388A1 |
The proposal is for a process for current control for an inductive consumer (4), preferably an electromagnetic pressure regulator, in which the actual current is detected synchronously and with a delay in relation to the output signal of...
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WO/1997/036215A1 |
A process device (40) couples to a process control loop (6). The process device (40) receives process signals. A memory (48) in the process device (40) contains a nominal parameter value (78) and a rule (80). Computing circuitry (46) cal...
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WO/1996/035981A1 |
Disclosed is a method of monitoring the reliable operation and improving diagnosis of state of controlled stochastic processes, in particular of the energy-producing process in nuclear reactors, using process signals measured with the ai...
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WO/1996/013763A2 |
In a control system a characteristic quantity of a process (1) exhibits a periodic disturbance. A measuring system (2) generates a measuring signal (Vm) which represents the characteristic quantity. A control device controls the process ...
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WO/1996/007128A1 |
A motor drive having a very large dynamic speed range comprises a PID position control system (3, 2) in which the motor position is readjusted on the basis of the difference between the instantaneous (xa) and the nominal (xs) position. A...
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WO/1995/034028A1 |
System for non linear optimal estimation of the state of a real time dynamic process (1) comprising measurement sensors (2) providing sampled data (3) related to the state of said process at a given time t, a calculating unit (4) associa...
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WO/1995/002854A1 |
A prediction controller such that the number of memories necessary and the number of operations in one sampling period are small and detection delay of the output of the controlled system is coped with. An increased target command value ...
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WO/1993/024871A2 |
An adaptive control includes a digital error correction system (DECS) (51) to reduce control system error to near zero by anticipating a problem and feeding forward in time a correction to deal with the problem before it happens. The ada...
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WO/1993/019408A1 |
Control device for maintaining an object in a given position comprising a motor (M), an encoder (1) and a circuit (2, 100, 5) for generating a signal for correcting the position of an object, said circuit comprising elements (2, 4) for g...
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WO/1993/007088A1 |
A method of automatically controlling a wastewater purification plant comprises the steps of measuring two or more of a number of parameters, determining a control parameter on the basis of the measurement results obtained and at least t...
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WO/1993/007089A1 |
A method of controlling a wastewater purification plant comprises the steps of measuring two or more of a number of parameters, automatically controlling the plant on the basis of the measurement values obtained using a mathematical mode...
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WO/1993/000622A1 |
An automatic control system (10) employing a sample and "early-off" hold function (25) is described. The invention involves implementing the hold function (23) in such a way as to reduce the amount of delay or phase lag introduced into t...
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WO/1993/000617A1 |
An automatic digital control system includes a proportional, integral, derivative (PID) compensator (28) in which the digital differentiator portion (41), with its associated zero-order hold, is implemented according to an algorithm that...
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WO/1992/020019A1 |
A method and apparatus for prediction repetition control of a servo motor which can converge a position error to zero even for an instruction repeated in a predetermined cycle and containing asynchronous components out of synchronism wit...
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WO/1991/016674A1 |
A discrete type repetition control apparatus is capable of stably controlling the repetition even when the status variables of the object to be controlled are not observable, and is provided with time delay elements (Z-1) of a number gre...
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WO/1991/011758A2 |
The invention relates to a process and circuit for improving the dynamics of regulating circuits or measuring paths. The items concerned by the invention are any regulating circuits and measuring paths, e.g. in the chemical industry. Acc...
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WO/1990/013375A1 |
Means and equipment for monitoring of the operation of a continuous casting equipment comprising a mould (1), a drive mechanism (3, 4), adapted to generate an oscillatory movement, and a mechanism to transmit the oscillatory movement fro...
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WO/1990/004820A1 |
In a signal processing system for a plant such as a motor or machine, subject to disturbances which are approximately periodic and wherein a signal (T(t)) time related to the disturbances is available, the plant response is sampled in an...
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WO/1989/008873A1 |
An error signal is monitored to detect a change in the error signal greater than a predetermined limit and to tabulate the number of times the change in the error signal is in excess of the predetermined limit over a fixed period of time...
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WO/1989/002617A1 |
A control system employing an algorithm in which the control quantity is so determined as to best follow a periodical setpoint value that repeats the same pattern possessed by a control object (13) relying only upon the arithmetic operat...
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WO/1989/000723A1 |
A process controller may incorporate statistical computations of the variance in the controlled variable. Statistical measures may then be used to offset the controller set point to maintain the controlled variable distribution in an acc...
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WO/1988/007230A1 |
A back-coupling differential module (ITZ) operating recursively according to the trapezoidal rule comprises an internal differential module (IRE) operating recursively according to the rectangular rule, connected in parallel to a flow me...
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WO/1986/005896A1 |
Method and an apparatus for tuning a process regulator (2), in which a process model is obtained from an experiment employing relay feedback, there being obtained self-oscillation of the system, and in which the process model is obtained...
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WO/1980/000201A1 |
Circuit (10) for generating an error voltage (26) which is proportional to the difference between a desired value of a physical parameter and the actual value of the physical parameter. The circuit (10) operates by alternately switching ...
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JP6937078B2 |
An output characteristic of a monotonic system is controlled using a plurality of adjustable inputs. The adjustments are controlled using a set of setpoints and a set of dither magnitudes. Each input's adjustment is controlled simultaneo...
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JP6774641B2 |
To inspect an adhesive material applied on an application object to optimize an application condition of application objects on which the adhesive material is to be applied.An application apparatus 1 includes: a conveyance part 2 which s...
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