Motor system control device and control method

A technology of a control device and a control method, which is applied in the field of motor systems, can solve the problems such as the decrease of the torque accuracy of the motor, and achieve the effect of improving the torque control accuracy.

Active Publication Date: 2006-04-05
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the open-loop control, since the motor torque is controlled without using the current sensor, the PWM inverter control device based on the use of the current sensor has the problem that the accuracy of the motor torque decreases.

Method used

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  • Motor system control device and control method
  • Motor system control device and control method

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Embodiment Construction

[0041] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description and drawings, the same components are marked with the same symbols. The name and function are also the same. Therefore, the detailed description will not be repeated.

[0042] Refer to figure 1 , Describe the motor control system of the embodiment of the present invention. figure 1 Represents a block diagram of a vehicle equipped with its control system. The control system is mounted on an electric vehicle in which an electric motor generates driving force, or a hybrid vehicle in which an electric motor and an engine generate driving force.

[0043] The vehicle includes: inverter ECU (Electonic Control Unit, electronic control unit) 100, battery 120, current sensors 124, 126, 128, SMR (System Main Relay) 130, inverter 140, motor generator (Hereinafter, denoted as M / G) 150, main ECU 1000, accelerator pedal opening sensor 1010, brake switch 1020, ...

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PUM

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Abstract

The invention relates to a control device of electromotor system and relative control method. Said control method comprises: the step (S204) that when there is normal current sensor (the judging result of S202 is yes), calculating the current peak value; the step (S300) that changing the input voltage value; and the step (S400) that changing the carrier wave frequency when the voltage value is not fully modified (the judging result of S214 is no). And the step (S228) that when there is no normal current sensor (the judging result of S202 is no), strengthening the detection of voltage sensor; the step (S400) that changing the carrier wave frequency and the step (S300) that changing the input voltage value when the voltage value is not fully modified (the judging result of S234 is no).

Description

Technical field [0001] The present invention relates to a technology for controlling a motor system mounted on a vehicle, and in particular to a technology for improving the accuracy of motor torque control. Background technique [0002] The electric motor used as the vehicle's driving force energy source is driven by the current output from the inverter to generate a predetermined torque. The current value at this time is fed back to the control device of the inverter to control the output current value. In a motor control system having such a control device, an error may occur between the switching operation of the command value output to the inverter and the actual switching operation. As a result, since an error occurs in the current supplied to the motor, the torque corresponding to the command value cannot be output with high accuracy, and there is a problem of torque fluctuation. [0003] Therefore, in order to solve this problem, for example, Japanese Patent Laid-Open No....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06H02M7/537
CPCY02T10/7241
Inventor 中村诚
Owner TOYOTA JIDOSHA KK
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