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Task scheduling method and device of vehicle alternating-current motor controller

An AC motor and task scheduling technology, which is applied in the direction of program control and electrical program control in sequence/logic controllers, can solve the problems of not being able to schedule tasks, and spend a lot of energy in designing task scheduling, so as to improve task performance. Scheduling efficiency and the effect of meeting scalability requirements

Inactive Publication Date: 2016-04-06
北京友信宏科电子科技股份有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The embodiment of the present invention provides a task scheduling method and device for a vehicle AC motor controller, aiming to solve the problem that the existing technology cannot handle various scheduling tasks in real time and requires a lot of energy to design task scheduling

Method used

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  • Task scheduling method and device of vehicle alternating-current motor controller
  • Task scheduling method and device of vehicle alternating-current motor controller
  • Task scheduling method and device of vehicle alternating-current motor controller

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Embodiment 1

[0045] figure 1 It shows the implementation flow of the task scheduling method of the vehicle AC motor controller provided by Embodiment 1 of the present invention, and is described in detail as follows:

[0046] In step S101 , according to the preset real-time performance of each scheduling task, each scheduling task is sorted according to a preset call sequence and classified into auxiliary scheduling tasks and main scheduling tasks.

[0047] In this embodiment, the real-time performance is determined according to the nature of the task. Specifically, the real-time performance of the temperature management task is lower than that of the current control, because the temperature changes relatively slowly during the control process. , the current change is relatively fast, so in the execution cycle of the determined task, the cycle of setting the current control is shorter than that of the temperature control, and the real-time performance is higher. Wherein, the auxiliary sch...

Embodiment 2

[0064] Figure 4 A specific structural block diagram of the task scheduling device of the vehicle AC motor controller provided by Embodiment 2 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown. In this embodiment, the task scheduling device of the vehicle AC motor controller includes: a task management unit 41 , a scheduling start unit 42 , a first task running unit 43 , a second task running unit 44 and a scheduling end unit 45 .

[0065] Wherein, the task management unit 41 is used to sort and classify each scheduling task according to the preset invocation sequence into auxiliary scheduling tasks and main scheduling tasks according to the preset real-time performance of each scheduling task;

[0066] The scheduling start unit 42 is used to start the watchdog timer to judge whether the AD conversion is completed, if the AD conversion is not completed, continue to judge whether th...

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Abstract

The invention belongs to the automobile control technical field and provides a task scheduling method and device of a vehicle alternating-current motor controller. The method includes the following steps that: scheduling tasks are sorted according to a preset call sequence and are classified into auxiliary scheduling tasks and main scheduling tasks according to the level of the real-time requirements of the scheduling tasks; a watchdog timer is started, and whether AD conversion is completed is judged, if AD conversion is not completed, whether AD conversion is completed is further judged; after AD conversion is completed, an AD conversion completion mark is cleared, and the auxiliary scheduling tasks are operated; if it is monitored that the main scheduling tasks can be operated, the main scheduling tasks are operated; and after the operation of the main scheduling tasks is completed, an input signal is transmitted to the watchdog timer, and whether AD conversion is completed is further judged. According to the task scheduling method and device of the vehicle alternating-current motor controller of the invention, time sequence-based scheduling can be carried out according to the real-time requirements of different scheduling tasks, and functional requirements of a multi-task system can be satisfied, and task scheduling efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of automobile control, and in particular relates to a task scheduling method and device for a vehicle AC motor controller. Background technique [0002] The AC motor controller of low-speed vehicles has the characteristics of various external devices, various functional modules, and complex control strategies. An effective control method is needed to manage various external devices and make real-time control strategies for different working conditions. The task scheduling method of the existing vehicle AC motor controller is to use a complex multi-task real-time operating system to schedule tasks. This operating system is responsible for memory allocation and task priority division, and then all real-time tasks are scheduled according to the established task scheduling mechanism Scheduling, due to this processing method, the controller needs to process not only the high real-time AC motor drive algorithm tas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 李萌郭铁梁
Owner 北京友信宏科电子科技股份有限公司
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