WRIGHT GRAHAM FOSTER; HEALY PATRICK JOSEPH MICHAEL
This invention relates to a process for manufacturing a bespoke product handling apparatus having a wide range of apparatus attributes. In particular, this invention relates to a process for manufacturing bespoke product handling apparatus by first of all providing a general apparatus specification containing a plurality of apparatus attributes, and an apparatus specifications and component lists are created spanning a limited range of the apparatus attributes. In order to manufacture a bespoke product handling apparatus, various rules are defined to first of all obtain a suitable reference apparatus specification from memory and thereafter modify the component list of that apparatus specification using a configurator in order to generate a new component list for the bespoke product handling apparatus. This new component list is used in the manufacture of the bespoke product handling apparatus and component list and the apparatus identifier associated therewith are stored in memory for subsequent use in the manufacture of other bespoke apparatus.
WRIGHT GRAHAM FOSTER; HEALY PATRICK JOSEPH MICHAEL
This invention relates to a process for manufacturing a bespoke product handling apparatus having a wide range of apparatus attributes. In particular, this invention relates to a process for manufacturing bespoke product handling apparatus by first of all providing a general apparatus specification containing a plurality of apparatus attributes, and an apparatus specifications and component lists are created spanning a limited range of the apparatus attributes. In order to manufacture a bespoke product handling apparatus, various rules are defined to first of all obtain a suitable reference apparatus specification from memory and thereafter modify the component list of that apparatus specification using a configurator in order to generate a new component list for the bespoke product handling apparatus. This new component list is used in the manufacture of the bespoke product handling apparatus and component list and the apparatus identifier associated therewith are stored in memory for subsequent use in the manufacture of other bespoke apparatus.
The mechanical differential actuator according to the present invention comprises a mechanical differential having three mechanicals ports. A first transducer with a low impedance is coupled to a first port, a second transducer with a high impedance is coupled to a second port, and the mechanical load i s coupled to the third port. The mechanical differential actuator enables controlling a force and a speed at a load coupled thereto through a known relation between the force and the speed. Moreover, the mechanical differential actuator presents a compact structure enabling the transfer of a large force relative to its volume.
The invention relates to systems for automated control that include elements with non-linearity of type "dead zone", in particular to electro-hydraulic following drives in which slides with positive overlap are used, and can be used in drives of workbenches, presses and other equipment. Electro-hydraulic following drive has electric integrator installed at input, power amplifier 3 to output of which executive mechanism 4 is connected, this includes electro-hydraulic amplifier 5 with non-linearity "dead zone" and object of motion 6, and back-coupling line with indicator 7 of back coupling by position of object of motion. According to the invention electro-hydraulic following drive has electronic amplifier 2 with nonlinearity of type "saturation", this is installed in line of main circuit connecting to each other electric integrator 1 to power amplifier 3, and additional electric integrator 8 installed in the line of back coupling, at that output of indicator 7 of back coupling by position of object of motion and output of electronic amplifier 2 with nonlinearity of type "saturation" are connected to inputs of additional integrator 8, and output of additional integrator is connected to input of electric integrator 1. The unit in automated mode of operation makes it possible to level existing non-linearity and thus to increase correction ability of electro-hydraulic following drive, to increase its sensitivity and accuracy of operation in wide range of controlled values, and to increase functional abilities of the drive.
In this new concept of regulation all the components mentioned above dYI.k'(132), dYP.k'(131), dYD.k'(132) are continuously stored in a memory and added to a constant Y.k-1' (123) forming the control element Y.k'(123), where Y.k-1 represents the output value of the previous beat. dYP.k'=KP'* xw.k is the proportional component, dYI.k'=Ki'* xw.k* dta, the integral component, dYD.k'=KD'* dxw.k/dta, the differential component, and xw is the regulation deviation. The new algorithm is Y.k'=Y.k-1'+dYP.k'+dYI.k'+dYD.k' and the k factors are really subscripts.
In the method of remotely operating an electrohydraulic control device, especially a proportional valve with electromagnetic drive, an electrical signal is generated from an adjustment path or a position of an operating element using a transfer function. A velocity is determined with which the operating element passes the adjustment path or implements a change of position. The transfer function is changed depending on the velocity. A region is provided around the null setting of the operating element in which the transfer function is independent of velocity.
55,450 A differential protection circuit includes a pair of current transformers each having a secondary winding and each being inductively coupled to a power conductor at a different location. The secondary windings of these transformers are electrically connected in series with each other in a loop in bucking arrangement. A resistor is connected in parallel with the secondary winding of each transformer. Control circuits are connected to sense a voltage signal appearing across the resistor and to take appropriate action when the sensed voltage reaches a predetermined level. An additional winding on one of the transformers provides isolation between the loop and one of the control circuits to prevent false tripping of the differential protection circuit.
A railway vehicle brake actuator employs an electric motor driving through a step-down gearbox to mechanically move the brake blocks. After the initial rubbing contact point the response of the system is non-linear and the motor feedback control involves compensation for said non-linearity. The motor output shaft is connected to a rotary shaft encoder so that the position of the actuator output member, and thus also the brake force applied, can be determined by pulse counting. The ideal relationship between a brake demand signal and brake force is linear. The actual relationship between actuator position and brake force is non-linear. Correction factors covering the whole operating range are stored in a memory against pulse count numbers and used as a look-up table in the feedback circuit to compensate either the feedback signal or the demand signal for the non-linearity of the response.