CN102275509A - Method for processing faults of motor drive system - Google Patents

Abstract

The invention relates to a method for processing faults of a motor drive system. A motor is a vehicle motor for an electric automobile. The method comprises the following steps of: classifying and defining the faults, namely setting standards for the fault classification, wherein the faults are classified into restricted faults, recoverable faults and irrecoverable faults according to the importance of the fault quantity; and classifying and processing the faults, namely processing respectively according to the fault classification, setting fault conditions of various faults, judging whether the processing conditions of various faults are accorded with, feeding the corresponding fault mark back, and correspondingly processing various faults.

Description

A kind of motor driven systems fault handling method

Technical field

The present invention relates to automobile dynamic system, be specifically related to a kind of motor driven systems fault handling method.

Background technology

At present, the environment and the energy become the problem of people's growing interest.At automotive field, the pure electric automobile of efficient, energy-saving and environmental protection has become one of auto trade development tendency thereupon.Power drive system can be accomplished the purpose of low energy consumption and zero-emission, has market-oriented prospect.

Therefore because as drive source, to the protection of driver and crew and power drive system, and the smooth operation of system is particularly important by electric energy for electronlmobil, highly reliable fault handling is the important leverage that guarantees the vehicle safety reliability service.Traditional fault handling method is simple relatively, can not reach the requirement of electronlmobil high security, reliability.

Summary of the invention

The object of the present invention is to provide a kind of simple and effective power drive system fault handling method, adopt the high speed processing chip, each fault simulation is detected the data science of carrying out handle, handle respectively according to important level, it is in time suitable to guarantee to handle, and can improve safety, the reliability of electronlmobil.

Each fault simulation is detected the data science of carrying out handle, according to the important level classification, handle respectively, it is in time suitable to guarantee to handle.

The objective of the invention is: a kind of motor driven systems fault handling method is provided, and its advantage is: scheme is simply effective, and the unification that can be electronlmobil driver comfort and system protection itself provides safeguard.

For achieving the above object, scheme provided by the invention is:

1. failure modes definition: be divided into (LF) limiter stage fault, (RF) according to fault amount severity level and can recover fault and (NRF) unrecoverable failure.

2. failure modes is handled: carry out different processing according to failure modes, system can normally be protected, and vehicle has better comfort simultaneously.

Above-mentioned is two stages of system schema, and the stage 1 classifies according to the difference of fault, and for fault handling provides classification foundation, the stage 2 is carried out different disposal according to the failure modes rank, takes into account security of system and driver comfort.

Concrete technical scheme is as follows:

A kind of motor driven systems fault handling method, described motor are the automobile-used motor of electronlmobil, adopt following steps:

(1) carries out the failure modes definition: standard is formulated in failure modes, be divided into the limiter stage fault, can recover fault and unrecoverable failure according to fault amount severity level;

(2) carrying out failure modes handles: handle respectively according to the failure modes in the step (1), the fault condition of various faults is set, judge whether to reach the treatment conditions of various faults, feed back the corresponding failure sign, carry out the respective handling of various faults.

Further, described limiter stage fault is influential to system's operation or performance, the fault that influence degree can change with the variation of certain tittle.

Further, the treatment step to the limiter stage fault is:

1): set fault condition according to each concrete fault, do limit Power Processing form in code, wherein, fault condition need be tested demarcation, and the purpose of limit Power Processing is not get equilibrium point between et out of order and the vehicle performance in system;

2): determine system when fault detection module and entered the limiter stage fault, then feed back the corresponding failure sign, program enters the operation of limit power section;

3): according to the condition output respective limits that causes fault, power-limiting output.

Further, the described fault of recovering is the fault that temporary derangement or interference cause, and its fault condition recovers easily, and behind the failure recovery, normal operation can recover in system.

Further, to the treatment step that can recover fault be:

1): set fault condition according to each concrete fault, fault condition need be tested demarcation;

2): determine when fault detection module that system has entered and to recover fault that feedback corresponding failure sign is closed power model and driven;

3): whether the failure judgement condition disappears, if disappear, then removes Reflector, can open power model again according to request and drive, if condition exists, does not then respond the request of unlatching.

Further, described unrecoverable failure is the fault recovered that cumulative number or time reaches certain value, and the fault that changes of hardware.

Further, the treatment step to unrecoverable failure is:

1): set fault condition according to each concrete fault, fault condition need be tested demarcation;

2): determine system when fault detection module and entered unrecoverable failure that feedback corresponding failure sign is closed power model and driven;

3):, all do not respond driving request no matter whether fault condition exists.

4): controller re-powers initialization, can eliminate Reflector, responds driving request again.

Compare with present prior art, the present invention program is simply effective, takes into account electronlmobil driver comfort and system protection itself.

Description of drawings

Fig. 1 is limiter stage fault handling figure

Fig. 2 is for recovering the processing figure of fault

Fig. 3 is the processing figure of unrecoverable failure

The specific embodiment

Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.

The present embodiment scheme mainly comprises two stages: the classification of fault and the processing of fault.

In the stage 1, mainly be that standard is formulated in failure modes:

1) limiter stage fault

Be primarily aimed at system operation or performance influentially, characteristics are faults that influence degree can change with the variation of certain tittle.

2) can recover fault

Mainly be the fault that temporary derangement or interference cause, characteristics are that the fault condition is recovered easily, and behind the failure recovery, normal operation can recover in system.

3) unrecoverable failure

Mainly be the fault recovered that cumulative number or time reaches certain value, and the fault that changes of hardware.

In the stage 2, all kinds of faults are specifically handled, as shown in Figure 1, 2, 3.

1) treatment step of limiter stage fault is seen Fig. 1.

I: set fault condition according to each concrete fault, do limit Power Processing form in the code the inside.Wherein, fault condition need be tested demarcation, and the purpose of limit Power Processing is not get equilibrium point between et out of order and the vehicle performance in system.

II: if fault detection module determines that system has entered the limiter stage fault, feedback response Reflector then, program enters the operation of limit power section.

III: according to the condition output respective limits that causes fault, power-limiting output.

2) treatment step that can recover fault is seen Fig. 2.

I: set fault condition according to each concrete fault, fault condition need be tested demarcation.

II: if fault detection module determines that system has entered and can recover fault that the feedback response Reflector is closed power model and driven.

III: whether the failure judgement condition disappears, if disappear, then removes Reflector, can open power model again according to request and drive, if condition exists, does not then respond the request of unlatching.

3) treatment step of unrecoverable failure is seen Fig. 3.

I: set fault condition according to each concrete fault, fault condition need be tested demarcation.

II: if fault detection module determines that system has entered unrecoverable failure, the feedback response Reflector is closed power model and is driven.

III:, all do not respond driving request no matter whether fault condition exists.

IV: controller re-powers initialization, can eliminate Reflector, responds driving request again.

In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.

Claims (7)

1. a motor driven systems fault handling method is characterized in that, described motor is the automobile-used motor of electronlmobil, adopts following steps:

(1) carries out the failure modes definition: standard is formulated in failure modes, be divided into the limiter stage fault, can recover fault and unrecoverable failure according to fault amount severity level;

(2) carrying out failure modes handles: handle respectively according to the failure modes in the step (1), the fault condition of various faults is set, judge whether to reach the treatment conditions of various faults, feed back the corresponding failure sign, carry out the respective handling of various faults.

2. motor driven systems fault handling method as claimed in claim 1 is characterized in that, described limiter stage fault is influential to system's operation or performance, the fault that influence degree can change with the variation of certain tittle.

3. motor driven systems fault handling method as claimed in claim 1 or 2 is characterized in that, to the treatment step of limiter stage fault is:

1): set fault condition according to each concrete fault, do limit Power Processing form in code, wherein, fault condition need be tested demarcation, and the purpose of limit Power Processing is not get equilibrium point between et out of order and the vehicle performance in system;

2): determine system when fault detection module and entered the limiter stage fault, then feed back the corresponding failure sign, program enters the operation of limit power section;

3): according to the condition output respective limits that causes fault, power-limiting output.

4. motor driven systems fault handling method as claimed in claim 1 is characterized in that, the described fault of recovering is the fault that temporary derangement or interference cause, and its fault condition recovers easily, and behind the failure recovery, normal operation can recover in system.

5. as claim 1 or 4 described motor driven systems fault handling methods, it is characterized in that, be the treatment step that can recover fault:

1): set fault condition according to each concrete fault, fault condition need be tested demarcation;

2): determine when fault detection module that system has entered and to recover fault that feedback corresponding failure sign is closed power model and driven;

3): whether the failure judgement condition disappears, if disappear, then removes Reflector, can open power model again according to request and drive, if condition exists, does not then respond the request of unlatching.

6. motor driven systems fault handling method as claimed in claim 1 is characterized in that, described unrecoverable failure is the fault recovered that cumulative number or time reaches certain value, and the fault that changes of hardware.

7. as claim 1 or 6 described motor driven systems fault handling methods, it is characterized in that, be the treatment step of unrecoverable failure:

1): set fault condition according to each concrete fault, fault condition need be tested demarcation;

2): determine system when fault detection module and entered unrecoverable failure that feedback corresponding failure sign is closed power model and driven;

3):, all do not respond driving request no matter whether fault condition exists.

4): controller re-powers initialization, can eliminate Reflector, responds driving request again.

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