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Switch device for an electric motor, control device and steering system

A switching mechanism, electric motor technology, applied in the direction of power steering mechanism, automatic power control, output power conversion device, etc., can solve the problems of unpopular material cost and assembly cost, etc.

Active Publication Date: 2019-01-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this means high cabling outlay, which on the one hand makes demands on the available installation space and on the other hand leads to unfavorable material and assembly costs

Method used

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  • Switch device for an electric motor, control device and steering system
  • Switch device for an electric motor, control device and steering system
  • Switch device for an electric motor, control device and steering system

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] figure 1 In a simplified illustration, a switching mechanism 1 is shown which is designed to actuate a phase X of an electric motor or to energize it as required. The switching mechanism 1 is designed here to carry out a pulse width modulation method for energizing the phase X. FIG. For this purpose, the switching mechanism 1 has a driver mechanism 2 , which actuates, that is to say conducts or interrupts switches, two semiconductor switches 3 connected together to form a half-bridge 5 with pulse-width modulation as a function of the actuation signal S. , 4. The semiconductor switch 3 is designed here as a high-side switch and is connected to the supply voltage (+), and the semiconductor switch 4 is designed as a low-side switch, which is connected to ground (Masse) (−). .

[0028] To receive the actuation signal S, the switching mechanism 1 has a bus interface 6 by means of which the switching mechanism 1 can be connected to a data bus, in particular of a motor vehi...

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PUM

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Abstract

The invention relates to a switch device (10) for an electric motor (11), in particular of a steering system of a motor vehicle, comprising at least one half-bridge (5) having two semiconductor switches (3, 4) for energising at least one phase (X) of the electric motor (11) on demand, wherein a drive device (2) is assigned to the semiconductor switches (3, 4), which actuates the semiconductor switches (3, 4) in accordance with an activation signal (AS). According to the invention, the drive device (2) has an oscillator (7) for generating a power stroke frequency, means (6) for receiving a synchronisation signal (SS) and a device (8) for adapting the power stroke frequency in accordance with the synchronisation signal (SS).

Description

technical field [0001] The invention relates to a switching mechanism for an electric motor of a steering system, in particular a motor vehicle, having at least one half-bridge with two semiconductor switches for energizing at least one phase of the electric motor as required , wherein the semiconductor switch is assigned a driver mechanism, which actuates the semiconductor switch according to the actuation signal. [0002] Furthermore, the invention relates to a control device for an electric motor having a plurality of electrical phases, in particular of a steering system of a motor vehicle, which control device has, for each of the phases of the electric motor, a A switching mechanism as described also has a control unit which is designed to generate actuation signals for actuating the switching mechanism. [0003] Furthermore, the invention relates to a steering system for a motor vehicle, which: has a steering handle; has at least one steerable wheel, the steering angle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/538H02M7/5387
CPCH02M7/53803H02M7/53875B62D5/046H03L7/06
Inventor S.瓦尔茨A.施佩因勒M.韦伯S.维德曼P.科西奥里斯D.兰普雷克特A.克劳特斯特伦克
Owner ROBERT BOSCH GMBH
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