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Synchronous control method and system for rotating speeds of coaxial dual motors

A technology of speed synchronization and control method, which is applied in the direction of multiple motor speed adjustment, motor, control drive, etc., can solve the problem of speed coordination and other problems, and achieve the effect of solving the problem of speed coordination

Active Publication Date: 2021-10-01
的卢技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to solve the speed coordination problem of the coaxial dual motors under the four-wheel independent control mode under complex road conditions, the present invention proposes a dual motor controller based on the master-slave architecture of the dual motor controller. Method and system for synchronous control of rotational speed of double-axis motors

Method used

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  • Synchronous control method and system for rotating speeds of coaxial dual motors
  • Synchronous control method and system for rotating speeds of coaxial dual motors
  • Synchronous control method and system for rotating speeds of coaxial dual motors

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Embodiment Construction

[0030] The technical solution of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0031] In the four-wheel independent control form, this embodiment adopts the control target of undertaking the electronic differential decomposition of the whole vehicle control, and the coaxial power system responds in the way of dual-motor control and motor coordination. Combine now figure 1 and figure 2 , a method for synchronously controlling the rotational speed of coaxial dual motors in this embodiment is described. The control method is used to control the left and right wheel end motors that respectively drive the two wheels located on the coaxial axis, and the left and right wheel end motors are synchronized respectively. Perform the following steps:

[0032] S100: collect the actual motor speed of the wheel-end motor, and the expected motor speed of the wheel-end motor; judge whether the actual motor speed exceeds the m...

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Abstract

The invention discloses a synchronous control method and system for the rotating speeds of coaxial dual motors. The method is used for controlling left and right wheel end motors for respectively driving two coaxial wheels. The left and right wheel end motors respectively and synchronously execute the following steps: acquiring the current respective states of the wheel end motors according to the actual rotating speeds of the motors and the expected rotating speeds of the motors; updating target motor rotating speeds of the wheel end motors according to the current state of the wheel end motors and a required rotating speed slope value; and judging whether the target motor rotating speed exceeds a motor rotating speed limit value or not, and if so, responding to the motor rotating speed limit value, otherwise, performing torque arbitration output.

Description

technical field [0001] The invention belongs to the technical field of drive systems, and in particular relates to a method and system for synchronously controlling the rotational speeds of coaxial dual motors based on a dual motor controller. Background technique [0002] The four-wheel independent drive control in new energy passenger vehicles is an important technical direction of the drive system. The motor and inverter in the existing control adopt a one-to-one hardware solution. In the four-wheel independent control, the whole vehicle is controlled It is necessary to solve the coordination problem of coaxial dual motors in the whole life cycle, that is, when two motors respectively drive two wheels on one axle of the vehicle, the speed coordination problem under different working conditions may require the same speed, which may be in When different speeds are required, respond to different speeds. When the vehicle system is on a high-speed or complex adhesion road sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/46H02P5/50B60L15/20B60L15/32B60L15/38
CPCH02P5/46H02P5/50B60L15/20B60L15/32B60L15/38Y02T10/64Y02T10/72
Inventor 窦勇
Owner 的卢技术有限公司
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