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Model calculation unit, control unit and method for calibrating a data-based function model

一种函数模型、模型计算的技术，应用在数字函数发生器、计算、电气控制等方向

Inactive Publication Date: 2014-10-15
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of unfavorable configuration data, however, the hardware implementation of such model calculation units up to now has caused numerical problems in the calculation, so that not all data-based function models determined offline are stable in the model calculation Calculate on the unit

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  • Model calculation unit, control unit and method for calibrating a data-based function model
  • Model calculation unit, control unit and method for calibrating a data-based function model
  • Model calculation unit, control unit and method for calibrating a data-based function model

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Embodiment Construction

[0028] figure 1 A schematic diagram of the hardware structure of an integrated control device 1 is shown, in which an arithmetic unit 2 and a model calculation unit 3 for calculating a data-based function model in hardware are provided in an integrated manner. The calculation unit 2 and the model calculation unit 3 are connected to each other through the system bus 4 .

[0029] In principle, model calculation unit 3 has only hardware (hardwired) and is preferably not designed to execute software code. For this reason, there is also no need to provide a processor in the model calculation unit 3 . This enables resource-optimized realization of such a model calculation unit 3 .

[0030] The model computing unit 3 may include one or more computing cores 31 , an internal memory 32 and a DMA unit 33 (DMA=Direct Memory Access (direct memory access)). The computing core 31 , internal memory 32 and DMA unit 33 are connected to each other via an internal communication connection 34 ....

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Abstract

A model calculation unit 3 for calculating a data-based function model in a control unit 1 is provided, the model calculation unit having a processor core 31 which includes: a multiplication unit 41 for carrying out a multiplication on the hardware side; an addition unit 42 for carrying out an addition on the hardware side; an exponential function unit 41 for calculating an exponential function on the hardware side; a memory 45 in the form of a configuration register for storing hyperparameters and node data of the data-based function model to be calculated; and a logic circuit 46 for controlling, on the hardware side, the calculation sequence in the multiplication unit 43, the addition unit 42, the exponential function unit 41 and the memory 45 in order to ascertain the data-based function model.

Description

technical field [0001] The invention relates to a model calculation unit for a control device, in which a data-based function model is implemented for executing a function on the hardware side, in particular for controlling an engine system. The invention also relates to a method for calculating a data-based function model in such a model calculation unit. Background technique [0002] Control devices are known from the prior art with a main computing unit and a separate model computing unit for computing a data-based function model. Document DE 10 2010 028 266 A1 shows, for example, a control device with an additional logic circuit as a model calculation unit, which is designed in hardware to calculate an exponential function. This enables support of Bayesian regression methods, which are especially required for computing Gaussian process models, in the hardware unit. [0003] The overall construction model calculation unit is used to execute a mathematical process of cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02F02D41/14
CPCG06F1/02G06F7/556G06F7/5443
Inventor T.朗H.马克特A.奧厄W.菲舍尔U.舒尔迈斯特N.班诺夫F.施雷赖歇特A.冈托罗C.弗莱克A.冯菲廷霍夫M.萨伊茨勒M.汉泽尔曼M.施赖伯
Owner ROBERT BOSCH GMBH
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