Abstract: A method and a device for tuning and control of industrial processes having varying material flow rate. An adder is configured to add excitation signals to the controller output signal. A measurement system is configured to measure a property in response to the excitation signals. A model based tuning unit is adapted to estimate the value of at least one parameter with unknown value of a process model structure describing the effect of varying material flow rate, based on the measurements of the property and the output signal from the controller, and to calculate a model that describes the dynamics from controller output to controller input based on the estimated value of the parameter, and to perform model based tuning of the controller based on the model that describes the dynamics from controller output to controller input.
Abstract: A travel limit detection/control device for a milling machine table driven by a screw rod includes a power input section driven by the screw rod, a reduction/output section coupled to and driven by the power input section, and first and second activating members for cutting power supply to the screw rod. A first travel setting member has a first end coupled to and driven by the reduction/output section and a second end that comes in contact with the first activating member when the table reaches a first travel limit. A second travel setting member has a first end coupled to and driven by the reduction/output section and a second end that comes in contact with the second activating member when the table reaches a second travel limit. Positions of the first and second travel setting members can be adjusted to change the first and second travel limits of the table.
Abstract: The invention relates to a method and a control unit (8) for guiding the displacement of a displaceable machine element (9) of a machine, said method comprising the following steps that are carried out in the control unit (8): a) input of a travel displacement (Xv) that is to be carried out by the machine element (9) and an optimisation criterion (OpK); b) determination of a displacement profile (Xsollk(t)) using the travel displacement that is to be carried out by the machine element (9) and the optimisation criterion (OpK), c) determination of a target position variable (Xsoll(n)) by means of the displacement profile (Xsollk(t)), d) output of the target position variable (Xsoll(n)) to a controller (6) for carrying out the travel displacement of the machine element (9). The invention provides a simple method and a simple control unit (8) for optimising the guidance of the displacement of a displaceable machine element (9) of a machine.
Type:
Application
Filed:
June 2, 2006
Publication date:
April 2, 2009
Applicant:
Siemens Aktiengesellschaft
Inventors:
Johannes Birzer, Jens Hamann, Raimund Kram, Uwe Ladra, Elmar Schafers
Abstract: A profile working machine is equipped with a support for holding a work in place, a working tool for machining the work, and drive and control systems for controlling the relative displacements between the support and the working tool. The profile working machine is to machine the work into a desired profile.
Type:
Grant
Filed:
September 17, 1985
Date of Patent:
May 19, 1987
Assignees:
Takaaki Nagao, Yotaro Hatamura, Hitachi Construction Machinery Co., Ltd.
Inventors:
Takaaki Nagao, Yotaro Hatamura, Kozo Ono
Abstract: A wood routing machine accepts a length of wood stock, e.g., a length of preformed crown molding, and thereafter in automatic sequence clamps the wood stock at lengthwise spaced locations, routs evenly spaced notches along the length of the stock and after each router operation automatically unclamps and indexes the stock a predetermined distance, again clamps the stock and repeats the router operation sequence until the entire length of stock has been notched to form a length of dental block type wood molding.