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WO/1999/005576A2 |
A valve (10) positioner system (12) that includes one or more unique control methods and devices, including several routines (80) to facilitate the continuous maintenance, calibration and adjsutment requirements of the valve. The positio...
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WO/1998/044252A1 |
In order to reliably control the inlet pressure, the integration of the standard deviation (1de) of said inlet pressure by a integral control unit (INT) is limited to a set value (1dimx). This threshold value (1dimx) is composed of a bas...
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WO/1998/043025A2 |
In a first embodiment, an absorption chiller including a generator (26) and an absorber (24) is provided, with at least one stream of concentrated absorbent solution flowing from the generator (26) to the absorber (24). Separate flows of...
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WO/1997/043701A1 |
Disclosed is an optimal arbitrary time-delay (OAT) filter to shape input signals by which a controlled motion is actuated in a physical system. The filter minimizes unwanted dynamics from being created by the actuation of the controlled ...
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WO/1996/036909A1 |
The invention relates to a process for determining a feedforward control (Gk) on a regulator output in a closed regulating circuit in which the effect of the interference (z) on the regulated value (y) is detected without reference to a ...
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WO/1996/029764A1 |
A remotely controlled cross-connection switching matrix, particularly suited for telephone systems, has a jumper pin (40) picker and placement mechanism selectively movable along each of three axes under the control of a single drive mot...
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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/1996/010780A1 |
An adaptive control system is provided for controlling a plant subject to repetitive phenomena having at least one frequency component. The system comprises a complex reference generator for generating a complex reference signal having i...
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WO/1995/033229A1 |
The present invention relates to a method and a device for executing phase compensation in a control system of a motor-driven vehicle, in which the time derivative for an output signal (y) from a circuit (1) contained in the control syst...
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WO/1995/007502A1 |
An industrial process controller (20, 80', 110), and methods of controlling an industrial process, are provided for controlling a process variable responsive to a set point. The industrial process controller (20, 80', 110) has a differen...
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WO/1995/002212A2 |
Disclosed is a process for controlling the drive for moving a workpiece (42) along a defined local coordinate ('phi') in a machine tool, wherein the movement can be modified according to a periodic command variable or wherein a periodic ...
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WO/1995/002211A1 |
The invention relates to a controlling device with PID control component by means of which a controller output value (u) can be obtained from the control difference (Xd), with an actuator (5) with correcting variable limitation forming a...
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WO/1994/006063A1 |
This invention describes a way of controlling a plant with multiple inputs and multiple outputs but allowing an operator to direct the control as if each controlled variable had a direct connection to operator controlled variables. An in...
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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/1993/015447A1 |
In order to be able with a linear adjusting arrangement, especially for adjusting the drive for a moved workpiece or a moved tool on a machine tool, to adjust a periodic command variable (w), if possible without any difference in adjustm...
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WO/1993/002405A1 |
A control system, having an input command signal and driving a prime mover, is provided with variable magnitude and/or rate input signal limiting that is adjusted by maps (68, 70, 72, 74) which set the limits for a variable magnitude lim...
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WO/1992/018359A1 |
Proposed is a device for operating a rain detector (10, 12, 14, 16, 18) in which the signal (15) generated by a sensor (14) or the sensor signal (17) after processing in a processing unit (16) is controlled by a control unit (19, 30) suc...
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WO/1992/014195A1 |
Oscillation is suppressed by a state feedback in which a special filter is applied to the amount of twist and the speed of twist of a control object such as a robot that has a low-frequency oscillation system. The amount of twist epsilon...
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WO/1990/010494A1 |
An interfacial polymerized reaction product composite on a porous support backing material may be prepared by contacting a porous support material such as polysulfone with an aqueous solution of an aromatic polyamine, said aqueous soluti...
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WO/1990/007735A1 |
The invention relates to methods of automatically detecting oscillation in the servo system and quickly, properly and automatically adjusting the speed loop gain in the servo system. The motor is rotated forward and reverse in a vibratin...
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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/1984/002204A1 |
Real time servo control in a non-linear dynamic system (20) adjusts the energy applied to a prime mover (14) from a source (12) of the energy as a linear function of an error (22) between the measured load (16) characteristics and modell...
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WO/1983/003315A1 |
The method and device are intended particularly for controlling the flow rates of granular or fluid materials (cereals or water) in a cereal mill. In order to control a regulating member a fluidic pressure driving device (5', V') is prov...
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JP7211396B2 |
A controller of a fan coupling device includes: an acquisition unit that acquires an acceleration parameter and a deviation parameter; a control unit that controls a regulation mechanism; a prediction unit that predicts that hunting occu...
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JP7070702B2 |
Provided is a material testing machine (1) including: a load mechanism (12) that applies a load to a test object; a load measurement device that measures the load applied to the test object; and a control device (30) that performs a feed...
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JP6036376B2 |
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JP5129793B2 |
A system and method for controlling a mass flow controller to have a constant control loop gain under a variety of different types of fluids and operating conditions, and for configuring the mass flow controller for operation with a flui...
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JP5048693B2 |
A method of ascertaining control parameters for a control system having a controller and a plant includes establishing a model of the plant and a model of the controller and calculating a performance index for a closed-loop system as a f...
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JP4944361B2 |
A method and apparatus determines the presence of and source of instabilities, such as limit cycles, within a process control loop while the process control loop operates on-line within a process environment. The method and apparatus mea...
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JP4864280B2 |
A system and method for controlling a mass flow controller to have a constant control loop gain under a variety of different types of fluids and operating conditions, and for configuring the mass flow controller for operation with a flui...
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JP4720744B2 |
In a method of automatically setting the vibration suppression filter, when a vibration detection portion detects a vibration A2, a state variable frequency analysis portion analyzes the frequencies of data from a state variable trace po...
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JP4664576B2 |
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JP4639821B2 |
A target value processing unit, includes: an input section to which a target value signal showing a target value of a control process is inputted (2); a target value shaping unit (6) shaping the target value signal inputted to the input ...
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JP2010275973A |
To provide a rotary machine reducing vibration response of rotary blades within an operation range.The rotary machine 1 is the rotary machine generating power by rotating a rotor 5. In the rotary machine 1, with a region wherein resonanc...
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JP4578732B2 |
Control method and control apparatus are capable of preventing vibrations of the feed system and thereby maintaining its optimum operating state for a long run. The control apparatus (1) includes an operation command generator (3) for ge...
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JP4488569B2 |
A device characteristic changing apparatus is provided for changing a characteristic of a device. The device characteristic changing apparatus comprises a time scale generator unit for generating a time scale on which a device operates, ...
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JP4483021B2 |
An anamorphic prism according to the invention comprises a first prism (2) made of a first light transmitting material and a second prism (3) made of a second light transmitting material, the first prism and the second prism being bonded...
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JP4483314B2 |
A servo control apparatus improved in trackability without being accompanied by overshoots or any continuous vibration and capable of tracking without any delay from an upper order command is provided. A command signal is directly transm...
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JP4474674B2 |
A pre-compensator is provided based on a definition of abase vibration model having a motor transfer function 1 for generating motor displacement 12 from an input that is the sum of input torque and a table propelling force 10 multiplied...
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JP2010119155A |
To provide a motor control device and a control method, capable of avoiding such a dangerous state that a motor vibrates and runs out of control, even when a servo system becomes unstable under any condition.The motor control device incl...
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JP4417915B2 |
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JP4326386B2 |
A control system which is capable of compensating for and suppressing the influence of a periodic disturbance on a controlled object more quickly, even when the controlled object is subjected to the periodic disturbance the amplitude of ...
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JP4291002B2 |
In a limit cycle autotuning method, the first limit cycle of alternately outputting a heat-side manipulated variable set point and a cool-side manipulated variable set point is generated. The first control response corresponding to the f...
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JP4272750B2 |
An exposure apparatus includes a motion control system, the motion control system including a structure, a plurality of actuators to apply forces to the structure, respectively, and a plurality of sensors to sense motion states of the st...
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JP4166637B2 |
In a method of adjusting a process control device wherein a closed loop system comprising a control subject and external compensator is approximated by a transfer function expressed by the time constant of a first-order delay filter and ...
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JP4163896B2 |
An adaptive controller generates a sequence of dither signals for each of a plurality of control parameters. Each dither signal sequence is uncorrelated with every other dither signal sequence. Each nominal control signal has the first o...
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JP4133625B2 |
A device for calculating the steady state behavior of a controller includes an amount generating unit for generating the amount of deviation of the regulator, a first threshold value calculation unit that detects whether the amount of de...
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JP4108450B2 |
A system is disclosed for determining the total torque required at the main and tail rotors of a helicopter for use in feed-forward rotor torque anticipation which includes a polynomial neural network adapted and configured to predict th...
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JP4102166B2 |
A system for performing feed-forward anticipation of rotor torque demand on a helicopter engine is disclosed which includes a flight control computer adapted and configured to predict the total torque required at the main and tail rotors...
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JP4022202B2 |
A pull-down control algorithm for an HVAC refrigeration system is provided. The control algorithm utilizes a fuzzy logic methodology to automatically adjust a flow of refrigerant in the system during a pull-down to maintain a desired pul...
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