WO2024016612A1 - 一种直流电机控制方法和存储介质 - Google Patents

一种直流电机控制方法和存储介质 Download PDF

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WO2024016612A1
WO2024016612A1 PCT/CN2022/144420 CN2022144420W WO2024016612A1 WO 2024016612 A1 WO2024016612 A1 WO 2024016612A1 CN 2022144420 W CN2022144420 W CN 2022144420W WO 2024016612 A1 WO2024016612 A1 WO 2024016612A1
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motor
speed
control
control method
voltage
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PCT/CN2022/144420
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English (en)
French (fr)
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姜春
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宁波森瑞机电技术有限公司
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • the present invention relates to the technical field of motor control, and in particular, to a DC motor control method and a storage medium.
  • DC motors used in the field of electric curtains generally have two control methods. One is direct control, and the speed will change with the load. In this way, the speed may change greatly during operation, resulting in a poor user experience; the other is to use PWM constant speed control can control the speed at a constant value. However, through PWM constant speed control, the voltage value of the DC motor needs to be continuously adjusted to make the DC motor speed reach a constant value, so greater noise will be generated.
  • the technical solution to be solved by the present invention is to provide a DC motor control method.
  • the noise of the motor is smaller and the rotational speed changes relatively smoothly when the motor is running.
  • the technical solution adopted by the present invention is: a DC motor control method, which includes the following steps:
  • the deviation percentage Y needs to be set in step S1, and when step S3 uses a constant voltage V1 to control the motor operation, it is also necessary to detect the motor speed through a Hall sensor at all times.
  • V1 constant voltage
  • the detected motor speed deviates from the set speed X
  • it exceeds Y it is necessary to control the motor again through the PWM control method, and then detect the motor speed through the Hall sensor at all times.
  • the motor speed reaches X again, the voltage at this time is detected again, and the voltage value at this time is obtained.
  • V2 and then use constant voltage V2 to control the motor operation.
  • the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the above-described DC motor control method. .
  • the present invention has the following advantages: first, the motor speed is controlled to the set speed through the PWM control method, and the voltage value at this time is obtained, and then this voltage value is used to control the motor.
  • this voltage value is used to control the motor.
  • the change in speed is small during actual operation and has a small impact on the overall operation of the motor.
  • the motor Noise during subsequent runs is greatly reduced.
  • the motor may still have a poor deviation based on the set speed X, so this application detects the speed at all times, and adjusts the speed through the PWM control method when the speed deviation is large. Return to the set speed, and obtain the voltage value V2 at this time, and then use this voltage value to control the motor operation. In this way, the motor can be controlled to run more smoothly with lower noise, and the speed deviation will not be large.
  • Figure 1 is a flow chart of a DC motor control method of the present invention.
  • a DC motor control method includes the following steps:
  • a DC motor control method includes the following steps:
  • step S1 the deviation threshold Y needs to be set to two levels, the first level is Y1, the second level is Y2, and Y1 is smaller than Y2, and the control is carried out according to the deviation threshold Y1% at the beginning, and in In this embodiment, Y1 is 20% and Y2 is 30%;
  • step S3 if it is continuously detected that the rotation speed There is strong wind outside, which will cause the load of the curtain motor to change greatly, indicating that the existing deviation threshold setting is unreasonable.
  • the deviation threshold needs to be adjusted, and the deviation threshold Y1 is adjusted to Y2 before continuing to control.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

本发明涉及电机控制技术领域，尤其涉及一种直流电机控制方法，它包括以下步骤：S1、设定电机需要的转速为X；S2、启动电机，通过PWM控制方法控制电机工作，而且通过霍尔传感器时刻检测电机的转速，当检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V1；S3、采用恒定的电压V1控制电机工作，直到电机完成工作。采用这种方法，电机运行时噪音较小且转速变化比较平稳。

Description

一种直流电机控制方法和存储介质 技术领域
本发明涉及电机控制技术领域，尤其涉及一种直流电机控制方法和存储介质。
背景技术
在电动窗帘领域采用的直流电机一般有两种控制方法，一种是直接控制，转速会随着负载变化，这样工作时转速可能会变化较大，导致用户使用体验较差；还有一种是采用PWM恒速控制，可以将转速控制在恒定值，但是通过PWM恒速控制时，需要不停的调节直流电机的电压值来使得直流电机转速达到恒定，所以会产生较大的噪音。
发明内容
本发明所要解决的技术方案是：提供一种直流电机控制方法，采用这种方法，电机运行时噪音较小且转速变化比较平稳。
本发明所采用的技术方案是：一种直流电机控制方法，它包括以下步骤：
S1、设定电机需要的转速为X；
S2、启动电机，通过PWM控制方法控制电机工作，而且通过霍尔传感器时刻检测电机的转速，当检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V1；
S3、采用恒定的电压V1控制电机工作，直到电机完成工作。
作为优选，步骤S1中还需要设定偏差百分比Y，且步骤S3采用恒定的电压V1控制电机工作时还需要通过霍尔传感器时刻检测电机转速，当检测到的电机转速与设定的转速X偏差超过Y时，需要重新通过PWM控制方法控制电机，然后再通过霍尔传感器时刻检测电机的转速，当再次检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V2，然后采用恒定的电压V2控制电机工作。
与上述方法相匹配，本发明再一方面提供一种存储介质，所述存储介质包括存储的程序，其中，在所述程序运行时控制所述存储介质所在设备执行以上所述的直流电机控制方法。
采用以上结构与现有技术相比，本发明具有以下优点：首先通过PWM控制方法将电机转速控制到设定的转速，并且得到此时的电压值，然后之后就一直采用这个电压值来控制电机工作，这样对直流电机来说，虽然采用恒定的电压控制会导致转速有一定的变化，但是实际运行时转速变化较小，对电机整体运行影响较小，而且因为后续没有了PWM控 制，所以电机后续运行时的噪音大大降低。
并且因为后续采用恒定的电压V1控制电机工作时，电机还是可能在设定转速X的基础上偏差较差，所以本申请时刻检测转速，并且当转速偏差较大时再通过PWM控制方法将转速调整回设定的转速，并且得到此时的电压值V2，然后再以这个电压值来控制电机工作，这样就可以实现在噪音较低的前提下控制电机运行更加平稳，转速偏差不会很大。
附图说明
图1是本发明一种直流电机控制方法的流程图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
实施例一：
一种直流电机控制方法，包括以下步骤：
S1、设定直流电机需要的转速为X，在本实施例中设定X为28转/分；
S2、启动电机，通过PWM控制方法快速的将电机控制到需要的转速，而且电机启动后就会通过霍尔传感器时刻检测电机的转速，当检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V1，将电压V1设定为运行电压，并且电机启动后到霍尔传感器检测到电机的转速达到X这段时间需要尽量控制的较短，即需要通过PWM控制方法快速的将电机转速提高到X，在本实施例中控制在1秒钟以内；
S3、采用恒定的电压V1控制电机工作，直到电机完成工作，即完成电机完成窗帘的打开或者关闭。
实施例二：
一种直流电机控制方法，包括以下步骤：
S1、设定直流电机需要的转速X，设置转速偏差阈值Y，在本实施例中将X设定为28转/分，将Y设定为20％；
S2、启动电机，通过PWM控制方法快速的将电机控制到需要的转速，而且电机启动后就会通过霍尔传感器时刻检测电机的转速，当检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V1，将电压V1设定为运行电压，并且电机启动后到霍尔传感器检测到电机的转速达到X这段时间需要尽量控制的较短，即需要通过PWM控制方法快速的将电机转速提高到X，在本实施例中控制在1秒钟以内；
S3、采用恒定的电压V1控制电机工作，然后继续通过霍尔传感器时刻检测电机的转速，若检测到的电机转速与设定的转速X偏差在Y内，则继续采用恒定的电压V1控制电机工作，若检测到的电机转速与设定的转速X偏差超过Y了，则需要重新通过PWM控制方法快速的将电机控制到需要的转速，同时在通过PWM控制时还需要继续通过霍尔传感器时刻检测电机的转速，若检测得到的电机转速达到了设定的转速X，则测得此时的电压为V2，然后采用恒定的电压V2控制电机工作，之后继续检测转速，然后按照出现转速X的偏差超过偏差阈值就通过PWM控制方法调整的这个思路继续控制电机，直到电机工作完成。
实施例三：
与实施例二的区别在于，步骤S1中需要将偏差阈值Y设置两档，第一档为Y1，第二档为Y2，且Y1小于Y2，并且开始时按照偏差阈值Y1％进行控制，且在本实施例中Y1为20％，Y2为30％；
并且在步骤S3中如果在Z时间内连续检测到转速X超过偏差阈值Y1三次，Z在本实施例中可以设定为10秒，则判断此时可能遇到了特殊情况，如窗户没关，而且外面有大风情况，这样就会导致窗帘电机的负载变化较大，表示现有的偏差阈值设置的不合理，需要调整偏差阈值，将偏差阈值Y1调整到Y2再继续进行控制。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
对于本领域的技术人员而言，阅读上述说明后，各种变化和修正无疑将显而易见。因此，所附的权利要求书应看作是涵盖本发明的真实意图和范围的全部变化和修正。在权利要求书范围内任何和所有等价的范围与内容，都应认为仍属本发明的意图和范围内。

Claims (3)

  1. 一种直流电机控制方法，其特征在于，它包括以下步骤：
    S1、设定电机需要的转速为X；
    S2、启动电机，通过PWM控制方法控制电机工作，而且通过霍尔传感器时刻检测电机的转速，当检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V1；
    S3、采用恒定的电压V1控制电机工作，直到电机完成工作。
  2. 根据权利要求1所述的一种直流电机控制方法，其特征在于：步骤S1中还需要设定偏差百分比Y，且步骤S3采用恒定的电压V1控制电机工作时还需要通过霍尔传感器时刻检测电机转速，当检测到的电机转速与设定的转速X偏差超过Y时，需要重新通过PWM控制方法控制电机，然后再通过霍尔传感器时刻检测电机的转速，当再次检测到电机的转速达到X时，再检测此时的电压，得到此时的电压值为V2，然后采用恒定的电压V2控制电机工作。
  3. 一种存储介质，其特征在于：所述存储介质包括存储的程序，其中，在所述程序运行时控制所述存储介质所在设备执行权利要求1至2任一项所述的直流电机控制方法。
PCT/CN2022/144420 2022-07-19 2022-12-31 一种直流电机控制方法和存储介质 WO2024016612A1 (zh)

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CN115037199A (zh) * 2022-07-19 2022-09-09 宁波森瑞机电技术有限公司 一种直流电机控制方法和存储介质

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US20140105754A1 (en) * 2012-03-02 2014-04-17 Panasonic Corporation Control method of electric compressor controller and refrigerator
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CN115037199A (zh) * 2022-07-19 2022-09-09 宁波森瑞机电技术有限公司 一种直流电机控制方法和存储介质

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US20140105754A1 (en) * 2012-03-02 2014-04-17 Panasonic Corporation Control method of electric compressor controller and refrigerator
CN106385205A (zh) * 2016-09-21 2017-02-08 珠海格力节能环保制冷技术研究中心有限公司 霍尔永磁同步电机的控制方法及装置
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CN115037199A (zh) * 2022-07-19 2022-09-09 宁波森瑞机电技术有限公司 一种直流电机控制方法和存储介质

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