摘要:
The goal of the present invention is to improve the useful data efficiency and reliability in the use of commercially available ETHERNET controllers, in a distributed real time computer system, by a number of node computers communicating via one or more communication channels by means of TT ETHERNET messages. To achieve this goal, a distinction is made between the node computer send time (KNSZPKT) and the network send time (NWSZPKT) of a message. The KNSZPKT must wait for the NWSZPKT, so that under all circumstances, the start of the message has arrived in the TT star coupler at the NWSZPKT, interpreted by the clock in the TT star coupler. The TT star coupler is modified, so that a message arriving from a node computer is delayed in an intelligent port of the TT star coupler until the NWSZPKT can send it precisely at the NWSZPKT into the TT network.
摘要:
A method for synchronizing local clocks in a distributed computer network, wherein end systems and switches of the network executes the method as a synchronization state machine, which uses three different frame types. The states in the state machine belong to an unsynchronized or to a synchronized set of states. All end systems being configured as Synchronization Master periodically send coldstart frames in one of the unsynchronized states, all end systems being configured as Synchronization Master react to the reception of a coldstart frame by sending a coldstart acknowledgment frame a first timeout after the reception of the coldstart frame on all replicated communication channels. First timeout is reset when a consecutive coldstart frame is received before the coldstart acknowledge is sent, and all Synchronization Masters react to the reception of a coldstart acknowledgment frame by starting a second timeout and enter a synchronized state when the second timeout expires.
摘要:
The invention relates to a method for synchronizing local clocks in a distributed computer network, where said computer network consists of a number of components that are connected to each other via bi-directional communication links, characterized in thata) an a priori configured set of components of the network generates synchronization messages and sends these synchronization messages to the network, andb) an a priori configured set of components consumes the generated synchronization messages, andc) one or more message-relaying components in between a component that generates a synchronization message and the component that consumes the synchronization message will add a delay value to the synchronization message reflecting the delay imposed by the message-relaying component,d) a component that is configured to consume a synchronization message will delay a received synchronization message upon reception for a duration that is calculated by an a priory configured value for the maximum transmission delay (“Maximum Transmission Delay”) minus the value of the sum of all delay values added to the received message before further usage of the message in the synchronization process of said component.
摘要:
The invention relates to a method for synchronizing local clocks in a distributed computer network, where said computer network consists of a number of end systems and at least two switches. Each end system is connected to at least two switches via bi-directional communication links. A configured subset of end systems and switches executes the method in form of a synchronization state machine. The state machine uses at least three different frame types. The states in the state machine are either said to belong to an unsynchronized set of states or belong to a synchronized set of states. All end systems that are configured as Synchronization Master periodically send coldstart frames in one of the unsynchronized states and react to the reception of a coldstart frame by sending a coldstart acknowledgment frame a configurable first timeout after the reception of the coldstart frame on all replicated communication channels, provided that the end system is in a state in which the synchronization state machine defines a transition for coldstart frames, and where said first timeout is reset when a consecutive coldstart frame is received before the coldstart acknowledge is sent. All end systems that are configured as Synchronization Master react to the reception of a coldstart acknowledgment frame by starting a configurable second timeout, provided that they are not already executing said first timeout, and entering a synchronized state when said second timeout expires.
摘要:
A method for synchronizing local clocks in a distributed computer network includes a number of components that are connected to each other via bi-directional communication links. An a priori configured set of components generates synchronization messages and sends these messages to the network. An a priori configured set of components consumes the generated messages. One or more message-relaying components in between a component that generates a synchronization message and the component that consumes the message adds delay value to the message reflecting the delay imposed by the message-relaying component. A component that is configured to consume a synchronization message delays a received synchronization message upon reception for a duration that is calculated by an a priori configured value for the maximum transmission delay minus the value of the sum of all delay values added to the received message before further usage of the message in the synchronization process.
摘要:
The goal of the present invention is to improve the useful data efficiency and reliability in the use of commercially available ETHERNET controllers, in a distributed real time computer system, by a number of node computers communicating via one or more communication channels by means of TT ETHERNET messages. To achieve this goal, a distinction is made between the node computer send time (KNSZPKT) and the network send time (NWSZPKT) of a message. The KNSZPKT must wait for the NWSZPKT, so that under all circumstances, the start of the message has arrived in the TT star coupler at the NWSZPKT, interpreted by the clock in the TT star coupler. The TT star coupler is modified, so that a message arriving from a node computer is delayed in an intelligent port of the TT star coupler until the NWSZPKT can send it precisely at the NWSZPKT into the TT network.
摘要:
The invention relates to a method for synchronizing local clocks in a distributed computer network, where said computer network consists of a number of components that are connected to each other via bi-directional communication links, characterized in that an a priori configured set of components of the network generates synchronization messages and sends these synchronization messages to the network. An a priori configured set of components consumes the generated synchronization messages. One or more message-relaying components in between a component that generates a synchronization message and the component that consumes the synchronization message will add a delay value to the synchronization message reflecting the delay imposed by the message-relaying component. A component that is configured to consume a synchronization message will delay a received synchronization message upon reception for a duration that is calculated by an a priori configured value for the maximum transmission delay minus the value of the sum of all delay values added to the received message before further usage of the message in the synchronization process of said component.
摘要:
The goal of the present invention is to improve the useful data efficiency and reliability in the use of commercially available ETHERNET controllers, in a distributed real time computer system, by a number of node computers communicating via one or more communication channels by means of TT ETHERNET messages. To achieve this goal, a distinction is made between the node computer send time (KNSZPKT) and the network send time (NWSZPKT) of a message. The KNSZPKT must wait for the NWSZPKT, so that under all circumstances, the start of the message has arrived in the TT star coupler at the NWSZPKT, interpreted by the clock in the TT star coupler. The TT star coupler is modified, so that a message arriving from a node computer is delayed in an intelligent port of the TT star coupler until the NWSZPKT can send it precisely at the NWSZPKT into the TT network.
摘要:
A method for control of a positioning and/or angle control device without an absolute position sensor and the device itself is proposed as having at least one position label for a controllable part in a motor vehicle using an electronic circuit. The positioning and/or angle control device initialized after termination of the operation of the motor vehicle.
摘要:
The aqueous acidic solution for electrolytically depositing high polish, decorative bright, smooth and level copper coatings on large area metal or plastic parts contains a) at least one oxygen-containing, high molecular additive and b) at least one water soluble sulfur compound, wherein the solution additionally contains c) at least one aromatic halogen derivative having the general formula (I), wherein R1, R2, R3, R4, R5 and R6 are each independently radicals selected from the group comprising hydrogen, aldehyde, acetyl, hydroxyls, hydroxyalkyl having 1-4 carbon atoms, alkyl having 1-4 carbon atoms and halogen, with the proviso that the number of residues R1, R2, R3, R4, R5 and R6 which are halogen ranges from 1 to 5.
摘要翻译:用于在大面积金属或塑料部件上电解沉积高抛光,光亮和平滑的铜涂层的酸性水溶液含有a)至少一种含氧高分子添加剂和b)至少一种水溶性硫化合物,其中 溶液另外含有c)至少一种具有通式(I)的芳族卤素衍生物,其中R 1,R 2,R 3, R 4,R 5和R 6各自独立地选自氢,醛,乙酰基,羟基,羟基烷基,具有1个 -4个碳原子,具有1-4个碳原子的烷基和卤素,条件是残基R 1,R 2,R 3, R 4,R 4,R 5和R 6是卤素,其范围为1至5。