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5033882 |
Circuit for conserving power of a backup battery
Circuitry including a first and second source of electrical energy provides a continuous supply of electrical energy to a volatile memory circuit utilized within an electrical apparatus. The...
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5008805 |
Real time, fail safe process control system and method
A real time control system is disclosed for controlling the sequential execution of scheduled operatons such as in process control or broadcast scheduling applications. The system uses a fail safe...
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4998194 |
Multiplex control system with programmable logic for controlling signal transfer between controllers and one or more controlled systems
A multiplex control system has controllers for delivering control data to at least one common controlled system, and a multiplex mode switching device which is constructed to permit the logic for...
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4992928 |
Multiple error processor in automatic work handling apparatus
A multiple error processor in an automatic work handling apparatus includes controlling a number of operating mechanisms individually by the operation of control devices corresponding thereto. The...
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4985824 |
Reliable fuzzy fault tolerant controller
The invention is a controller which provides continuous regulation of the output of a process or a plant as well as performing discrete control functions. The REFFTAC includes an adaptive direct...
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4984240 |
Distributed switching architecture for communication module redundancy
Partner modules are assigned to a plurality of primary modules in a communications system, each partner module being adapted to route signals from the primary module to which it is assigned to a...
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4965714 |
Apparatus for providing configurable safe-state outputs in a failure mode
A process control system includes a processor which outputs command signals to a plurality of field devices via an interface unit. The interface unit comprises a primary output unit for outputting...
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4959768 |
Apparatus for tracking predetermined data for updating a secondary data base
A process control system includes a primary processor connected to a primary memory via a bus. The primary processor transfers data to be stored to said primary memory. An apparatus of the present...
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4958270 |
Method for control data base updating of a redundant processor in a process control system
A process control system includes a process controller which has a first and second controller, one of the controllers being designated as a primary controller and the other controller being...
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4941087 |
System for bumpless changeover between active units and backup units by establishing rollback points and logging write and read operations
The central unit of a computer equipment has a processor and a memory as well as redundant units as backup units for the processor and/or the memory. Further, there are members for changeover from...
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4907170 |
Inference machine using adaptive polynomial networks
An inference machine is described which comprises an adaptive polynomial network with the capability of implicitly inferring missing input information contained in time-dependent signals. The...
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4903191 |
Centrifuge control system having dual processors
The present invention relates to control architecture for a centrifuge motor speed control system having dual processors. The processors are configured in a master-slave relationship for some...
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4896828 |
Solid state emergency heat circuit
An emergency heat circuit for a microprocessor-controlled furnace has a first emergency heat switch with one terminal in contact with a rectifier circuit that provides a DC voltage when the...
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4897631 |
Control apparatus
A control apparatus with connecting terminals which are in part connected to serve a plurality of functions. The control apparatus has at least one memory and can be especially for a control...
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4890284 |
Backup control system (BUCS)
A backup software program is installed in an isolated portion in the memory of at least one of redundant computers. The backup program performs basically the same functions as the prime program but...
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4882669 |
Multi computer fail safe control apparatus
There is a control apparatus using a plurality of microcomputers for controlling an apparatus. This control apparatus comprises a first microcomputer for controlling loads and a second...
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4882778 |
Electronic load drive control apparatus
There is disclosed a novel control system in an electronic apparatus such as a copier, in which intelligent registers are provided in addition to the microprocessor and execute control under...
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4849919 |
System wake up circuit for computer
An electronic apparatus such as a computer is of the type in which the computer is energized for wake up in accordance with a timer or an external key input. Prior to the system wake up by the...
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4847830 |
Method and apparatus for automatic loading of a data set in a node of a communication network
In a communication network, including a first node and a plurality of neighbor nodes that are linked by communication channels to the first node, a data set is retrieved from neighbor nodes...
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4841431 |
Programmable transfer machine
A transfer machine comprising a conveyor for conveying workpieces to stations and numerically controlled machine tools disposed at their respective stations. These machine tools are controlled by...
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4823256 |
Reconfigurable dual processor system
A is a duel processor system (100) with duplicated memory (114,124) has two modes (10,11) of operation: a converged mode (10) in which one of the two processors (101,102) is active and executing...
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4821193 |
Digital control for gas turbine engine
In a two-channel control system for a gas turbine engine, the occurrence of a fault in the engine causes the control system to switch from one channel to the other. If it is found that neither...
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4807153 |
Multiaxis digital robot control having a backup velocity monitor and protection system
A digital robot control includes a position/velocity microprocessor control and a torque microprocessor control for each of multiple robot axes. Digital position, velocity and motor current...
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4797884 |
Redundant device control unit
An industrial, digitally controlled processing system including two nominally identical electronic devices connected in the system in a manner such that one of the devices functions as an active...
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4775976 |
Method and apparatus for backing up data transmission system
A data transmission system is disclosed in which a plurality of data transmission service units and terminals are connected to a data transmission line to effect, e.g., an in-line or local area...
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4773072 |
Method and circuit configuration for suppressing short-time interferences
A method and a circuit configuration for suppressing sporadic interferences in the processing of data by means of two circuit systems (2, 3, MC1, MC2). The circuit systems redundantly process the...
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4752869 |
Auxiliary reactor protection system
Redundant trip logic microprocessors produce partial trip signals which are voted on by a pair of voters at the power interface to the actuated devices. The logic implemented by each trip logic...
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4747041 |
Automatic power control system which automatically activates and deactivates power to selected peripheral devices based upon system requirement
A selective, non-manual power controller provides the selective, non-manual power control of various components of a data processing equipment from and reports the power status of such components...
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4740887 |
Method and system for improving the operational reliability of electronic systems formed of subsystems which perform different functions
A method and system for improving the reliability of an electronic system formed of subsystems which perform different functions. The electronic system is analyzed to determine which of the...
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4740888 |
Control system for cooking apparatus
A control system for cooking apparatus including a heat source, a heat control system and a back-up thermostat system having a back-up temperature probe. The control system includes a digitally...
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4739469 |
Fail-safe circuit for a control system
A highly reliable, fail-safe circuit for a control system wherein a controlled device will always receive a control signal derived from a main control circuit when the main control circuit operates...
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4722061 |
Establishing synthesis validity between two signal sources
In an electronic engine control (EEC) for a turbine engine, a high rotor speed signal (N2SYNTH) is synthesized from a sensed low rotor speed signal (N1) in a primary control channel (32) so long as...
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4718389 |
Apparatus for the control of repetitive events dependent on operating parameters of internal combustion engines
Control signals for triggering the events to be controlled, via at least one output stage (13, 14), are generated in a vehicular computer (11) as a dependent function of the output signals of a...
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4716531 |
Two lane engine control system
A control system for a gas-turbine engine has two parallel control units, either one of which can be switched to supply control signals to the engine in response to input signals, such as from the...
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4700292 |
Interface circuit arrangement for transferring data from a master processor to a slave processor
Two identical processors of a communication system, operating in master-slave relationship, each have a mass memory, a working memory, a CPU and an interface interlinked by an internal bus, the two...
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4672530 |
Distributed control with universal program
A distributed control system controlling a plurality of subprocesses wherein each of the process control computers (44, 46, 48) executes a preprogrammed set of instructions (50-62) identical to the...
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4672529 |
Self contained data acquisition apparatus and system
A self contained data acquisition and control system and apparatus with direct process input and output capability. Designed to operate within the harsh environment of a process zone, the apparatus...
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4667284 |
Multiplexing control unit
This is a multiplexing control unit comparing a plurality of subsystems completely separate and independent.Each subsystem is constituted as follows, and one objective device is controlled at the...
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4661310 |
Pulsed multichannel protection system with saturable core magnetic logic units
The dynamic logic of each channel of a multichannel protection system for a nuclear power plant provides a trip logic path and a global bypass logic path by which pulse signals from a clock source...
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4654846 |
Spacecraft autonomous redundancy control
The spacecraft system has automatic fault detection and autonomous reconfiguration of redundant hardware and software to correct that fault without ground station intervention. The spacecraft has...
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4649484 |
Avionic control system
An all-electric powered flight control system for an aircraft incorporating fault-tolerant avionics combined with a redundant power actuation control system utilizing electro-mechanical devices for...
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4644137 |
Circuit for controlling a rice cooker with power interruption control
A circuit for controlling a rice cooker having at least one heater used for cooking rice comprises, a rice cooking mode setting section capable of selectively setting three or more different rice...
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4642753 |
Domestic electrical appliance
In a domestic appliance, such as a washing machine, controlled by a solid state processor 1, it is possible for power supply interference to corrupt the program data stored in the processor or even...
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4634110 |
Fault detection and redundancy management system
A fault detection and redundancy management system for a dual redundancy based network architecture in which the principal control components (master units) are configured and programmed to...
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4635184 |
Distributed control with mutual spare switch over capability
A distributed control system controlling a plurality of energize-to-start, energize-to-stop subprocesses is designed for on-line maintenance. One or more of the process control computers (86)...
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4628508 |
Computer of processor control systems
A processor control system for controlling items of hardware includes pairs of processors associated with the hardware items. One processor of each pair operates the process or processes for...
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4623883 |
Automatic communications switch
An automatic communications switching circuit is used to couple a primary terminal, an alternate terminal, a cluster of secondary terminals and a host system to enable communication and data...
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4609984 |
Automatic baler with manual override of microprocessor controlled functions
An automatic baling machine for forming round bales and wrapping them with twine is provided with a microprocessor-controlled signal processing circuit for controlling movement of a bidirectional...
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4607256 |
Plant management system
A plant management system is provided. The system includes one or more digital process control and data acquisition subsystems and a plant control network. Each control subsystem includes a data...
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4600870 |
Dual controller position control system
A position control system having dual controllers, each capable of operating in either a proportional or a proportional plus integral gain mode, is normally operated with one controller in the...
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