JPH04254140A - Method for controlling air conditioner - Google Patents
Method for controlling air conditionerInfo
- Publication number
- JPH04254140A JPH04254140A JP3035658A JP3565891A JPH04254140A JP H04254140 A JPH04254140 A JP H04254140A JP 3035658 A JP3035658 A JP 3035658A JP 3565891 A JP3565891 A JP 3565891A JP H04254140 A JPH04254140 A JP H04254140A
- Authority
- JP
- Japan
- Prior art keywords
- fuzzy
- fuzzy rule
- air conditioner
- temperature
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007613 environmental effect Effects 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 230000005484 gravity Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は能力可変の圧縮機を搭
載している空気調和機に係り、更に詳しくはその圧縮機
の回転数を室内の温度変化等に応じてファジィ制御し、
運転開始から室内をより快適環境に維持する空気調和機
の制御方法に関するものである。[Industrial Application Field] This invention relates to an air conditioner equipped with a compressor with variable capacity, and more specifically, the number of revolutions of the compressor is fuzzy controlled according to changes in indoor temperature, etc.
The present invention relates to a control method for an air conditioner that maintains a more comfortable indoor environment from the start of operation.
【０００２】0002
【従来例】従来、この種の空気調和機においては、室内
機の吸い込み口に設けた吸込温度センサ（サーミスタ）
で吸込空気の温度を検出し、この温度をワイヤレスリモ
コンに設けた温度センサで検出した温度で補正して室温
とし、この室温とワイヤレスリモコンによる設定温度の
差を検出し、その温度差に応じて能力可変の圧縮機の運
転周波数を切り替える。この場合、例えばその温度差に
応じた複数ゾーン毎に、その運転周波数が設定されてお
り、当該空気調和機の能力可変圧縮機がその温度差に該
当するゾーンの運転周波数で制御される。[Conventional Example] Conventionally, in this type of air conditioner, a suction temperature sensor (thermistor) was installed at the suction port of the indoor unit.
Detects the temperature of the intake air, corrects this temperature with the temperature detected by the temperature sensor installed in the wireless remote control, and sets it as room temperature.The difference between this room temperature and the temperature set by the wireless remote controller is detected, and the temperature is adjusted according to the temperature difference. Switches the operating frequency of the variable capacity compressor. In this case, for example, the operating frequency is set for each of a plurality of zones depending on the temperature difference, and the variable capacity compressor of the air conditioner is controlled at the operating frequency of the zone corresponding to the temperature difference.
【０００３】しかし、上記空気調和機においては、室内
の環境変化に対する応答が遅く、特に外的要因、例えば
ドアの開閉時、直射日光等により室温が変化する場合、
人に不快感を与えることがあった。However, the above-mentioned air conditioners have a slow response to changes in the indoor environment, especially when the room temperature changes due to external factors such as opening/closing a door, direct sunlight, etc.
It could make people feel uncomfortable.
【０００４】そこで、上記室内の環境状態を検出し、こ
の検出値を入力として所定ファジィルール（制御ルール
）にしたがって演算し、この演算結果により圧縮機の回
転数を速やかに、かつ極め細かく制御する空気調和機が
種々提案されている。そのファジィルールの一つとして
、例えば下記の表１に示すものがあり、このファジィル
ールは入力１を室温（Ｔａ）と設定温度（Ｔｓ）の差Δ
Ｔとし、入力２を室温（Ｔａ）の時間的変化ΔＴａ／ｔ
とした２次元マトリックスで表される。[0004] Therefore, the above-mentioned indoor environmental condition is detected, and the detected value is used as input to perform calculations according to predetermined fuzzy rules (control rules), and the rotation speed of the compressor is quickly and extremely finely controlled based on the calculation results. Various air conditioners have been proposed. One such fuzzy rule is, for example, the one shown in Table 1 below, which uses input 1 as the difference Δ between the room temperature (Ta) and the set temperature (Ts).
T, input 2 is the temporal change in room temperature (Ta) ΔTa/t
It is expressed as a two-dimensional matrix.
【０００５】[0005]
【表１】
なお、ＮＬは負の方向に大きい、ＮＭは負の方向に中程
度、ＮＳは負の方向に小さい、ＺＯは略零、ＰＳは正の
方向に小さい、ＰＭは正の方向に中程度、ＰＬは正の方
向に大きいを意味している。そして、例えば１例として
、ＩＦ 入力１＝ＮＬ ＡＮＤ入力２＝ＮＬ Ｔ
ＨＥＮ 出力Δｆ＝ＰＬのファジィルールの場合、室
温が設定温度よりも非常に低く、室温が時間的に非常に
低下している場合、圧縮機の回転数Δｆを非常に大きく
する。
なお、上記ファジィルールに用いられるメンバシップ関
数は図２乃至図４と同じものである。[Table 1] Note that NL is large in the negative direction, NM is medium in the negative direction, NS is small in the negative direction, ZO is approximately zero, PS is small in the positive direction, and PM is small in the positive direction. Medium, PL means large in the positive direction. For example, as an example, IF input 1 = NL AND input 2 = NL T
In the case of the fuzzy rule of HEN output Δf=PL, if the room temperature is much lower than the set temperature and the room temperature is dropping significantly over time, the rotation speed Δf of the compressor is made very large. The membership functions used in the fuzzy rules are the same as those shown in FIGS. 2 to 4.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記空
気調和機のファジィ制御においては、運転中の制御を重
要視しているため、その運転中においては室内を快適環
境に維持することが可能であるが、朝や帰宅時等の運転
開始時においては、例えば室温が非常に低下していたり
、室温と設定温度の差が大きいと、図９の一点鎖線Ａに
示すように、その室温が設定温度に達するまで時間（同
図のｔｓ時間）がかかるという不具合が生じるという問
題点があった。逆に、上記ファジィ制御が運転開始時を
重要視したものであると、その運転開始時においては良
好な制御が行われるが、運転中においては室内の快適環
境に維持する制御が困難である。すなわち、空気調和機
の運転開始時と運転中とでは室内の環境状態が異なって
いるからである。[Problem to be Solved by the Invention] However, in the fuzzy control of the air conditioner described above, since control is emphasized during operation, it is possible to maintain a comfortable indoor environment during operation. However, at the time of starting operation in the morning or when returning home, for example, if the room temperature is very low or there is a large difference between the room temperature and the set temperature, the room temperature will be lower than the set temperature, as shown by the dashed line A in Figure 9. There is a problem in that it takes a long time (time ts in the figure) to reach . On the other hand, if the fuzzy control emphasizes the start of operation, good control is performed at the start of operation, but it is difficult to maintain a comfortable indoor environment during operation. That is, this is because the indoor environmental conditions are different between when the air conditioner starts operating and when it is in operation.
【０００７】また、上記運転開始時においてはファジィ
制御を用いず、通常の制御を行なうことが考えられるが
、この場合図９の二点鎖線Ｂに示すように、室温がオー
バーシュートし、それ以後室内の環境を良好にするまで
時間がかかり、その分電力消費が多くなるという問題点
が生じる。[0007]Also, it is conceivable to perform normal control without using the fuzzy control at the start of the operation, but in this case, as shown by the two-dot chain line B in Fig. 9, the room temperature overshoots and thereafter A problem arises in that it takes time to improve the indoor environment, and power consumption increases accordingly.
【０００８】この発明は上記課題に鑑みなされたもので
あり、その目的は室内の環境状態、特に運転開始時と運
転中とでは異なるファジィルールによりファジィ制御を
行なうことができ、その環境状態に応じて適切な制御を
行なうことができるようにした空気調和機の制御方法を
提供することにある。The present invention has been made in view of the above-mentioned problems, and its purpose is to perform fuzzy control using different fuzzy rules depending on the indoor environmental condition, especially at the start of operation and during operation, and to perform fuzzy control according to the environmental condition. An object of the present invention is to provide a control method for an air conditioner that allows appropriate control to be performed.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、この発明は、能力可変の圧縮機を搭載し、室内温度
、室外温度、湿度、輻射熱等により室内の環境状態を検
出し、この検出値を入力とし、所定ファジィルールにし
たがってファジィ演算し、このファジィ演算結果により
その圧縮機の回転数を制御する空気調和機の制御方法で
あって、少なくとも上記所定ファジィルールと異なる第
２のファジィルールを有し、当該空気調和機の運転開始
時にはその第２のファジィルールにしたがって圧縮機の
回転数を制御し、しかる後上記所定ファジィルールにし
たがって圧縮機の回転数を制御するようにしたことを要
旨とする。[Means for Solving the Problems] In order to achieve the above object, the present invention is equipped with a variable capacity compressor, detects the indoor environmental condition based on indoor temperature, outdoor temperature, humidity, radiant heat, etc. A control method for an air conditioner, in which a detected value is input, a fuzzy calculation is performed according to a predetermined fuzzy rule, and the rotation speed of the compressor is controlled based on the result of the fuzzy calculation, the method comprising at least a second fuzzy calculation different from the predetermined fuzzy rule. The system has a rule, and when the air conditioner starts operating, the rotation speed of the compressor is controlled according to the second fuzzy rule, and after that, the rotation speed of the compressor is controlled according to the predetermined fuzzy rule. The gist is:
【００１０】0010
【作用】上記制御方法としたので、空気調和機の運転開
始時には、室内の環境状態、室温と設定温度の差および
室温の温度変化率を入力し、上記第２のファジィルール
にしたがってファジィ演算し、この演算結果により圧縮
機の回転数が可変制御される。また、その運転中にあっ
ては、例えばその運転開始から所定時間経過後には、室
温と設定温度の差および室温の温度変化率を入力し、そ
の第２のファジィルールから所定ファジィルール（第１
のファジィルール）に切り替えられ、この第１のファジ
ィルールにしたがってファジィ演算し、この演算結果に
より圧縮機の回転数が可変制御される。すなわち、空気
調和機の運転開始時とその運転中ではファジィ制御が切
り替えられ、それぞれ最適なファジィ制御が行われる。[Operation] With the above control method, when the air conditioner starts operating, the indoor environmental conditions, the difference between the room temperature and the set temperature, and the rate of change in room temperature are input, and fuzzy calculations are performed according to the second fuzzy rule above. , the rotation speed of the compressor is variably controlled based on this calculation result. During operation, for example, after a predetermined period of time has elapsed from the start of operation, the difference between the room temperature and the set temperature and the temperature change rate of the room temperature are input, and a predetermined fuzzy rule (first
Fuzzy calculation is performed according to this first fuzzy rule, and the rotation speed of the compressor is variably controlled based on the calculation result. That is, the fuzzy control is switched at the start of operation of the air conditioner and during its operation, and the optimal fuzzy control is performed respectively.
【００１１】[0011]
【実施例】以下、この発明の実施例を図１乃至図９に基
づいて説明する。図１において、この空気調和機は、室
温を設定するリモコン等の室温設定部１と、当該室内機
の吸込口に設けたサーミスタ等の室温検出部２と、その
室内環境状態の検出温度（Ｔａ）および設定温度（Ｔｓ
）等により、室温（Ｔａ）と設定温度（Ｔｓ）の差（温
度差ΔＴ）を算出し、かつその室温（Ｔａ）の時間的変
化（温度変化率ΔＴａ／ｔ）を算出する演算部３と、こ
れら温度差ΔＴおよび温度変化ΔＴａ／ｔ等の環境状態
を入力とし、下記の表１に示す制御ルール（ファジィル
ール）の第１のファジィルール部４あるいは下記の表２
に示す第２のファジィルール部５の何れか一方のファジ
ィルールにしたがってファジィ演算するファジィコント
ローラ６と、圧縮機７と、そのファジィ演算結果に応じ
て圧縮機７の回転数を制御する圧縮機制御部（インバー
タ制御部）８とを備えている。Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 9. In FIG. 1, this air conditioner includes a room temperature setting unit 1 such as a remote control that sets the room temperature, a room temperature detection unit 2 such as a thermistor provided at the suction port of the indoor unit, and a detected temperature (Ta) of the indoor environmental state. ) and set temperature (Ts
), etc., to calculate the difference (temperature difference ΔT) between the room temperature (Ta) and the set temperature (Ts), and calculate the temporal change in the room temperature (Ta) (temperature change rate ΔTa/t). , these environmental conditions such as temperature difference ΔT and temperature change ΔTa/t are input, and the first fuzzy rule part 4 of the control rule (fuzzy rule) shown in Table 1 below or Table 2 below is input.
A fuzzy controller 6 that performs fuzzy calculations according to one of the fuzzy rules of the second fuzzy rule section 5 shown in FIG. (inverter control unit) 8.
【００１２】0012
【表２】
なお、空気調和機の運転開始時には第２のファジィルー
ル部５が用いられ、このファジィ変数の温度差ΔＴ（入
力１）、変化率ΔＴａ／ｔ（入力２）、出力（回転数Δ
ｆ）には図２乃至図４のメンバシップ関数が用いられて
いる。また、図２乃至図４のメンバシップ関数は第１の
ファジィルール部４のファジィ変数の温度差ΔＴ（入力
１）、変化率ΔＴａ／ｔ（入力２）、出力（回転数Δｆ
）と同じである。[Table 2] When the air conditioner starts operating, the second fuzzy rule section 5 is used, and the fuzzy variables temperature difference ΔT (input 1), rate of change ΔTa/t (input 2), output (rotational speed Δ
The membership functions of FIGS. 2 to 4 are used for f). Furthermore, the membership functions in FIGS. 2 to 4 are based on the temperature difference ΔT (input 1), rate of change ΔTa/t (input 2), and output (rotational speed Δf) of the fuzzy variables of the first fuzzy rule unit 4.
) is the same as
【００１３】次に、上記構成の空気調和機に適用される
制御方法を図２乃至図９を参照して説明する。まず、こ
の空気調和機の暖房運転が開始され、このとき室内の環
境状態、温度差ΔＴ（入力１）および温度変化率ΔＴａ
／ｔ（入力２）が図５および図６の矢印に示す値である
ものとすると、ファジィコントローラ６にはそれら図の
矢印に示す値が入力されるが、第２のファジィルール部
５のファジィルールにしたがってファジィ演算が行われ
る。この場合、以下に示す４個のファジィルールにした
がってファジィ演算が行われる。Next, a control method applied to the air conditioner having the above configuration will be explained with reference to FIGS. 2 to 9. First, heating operation of this air conditioner is started, and at this time, the indoor environmental condition, the temperature difference ΔT (input 1), and the temperature change rate ΔTa
Assuming that /t (input 2) is the value shown by the arrow in FIGS. 5 and 6, the value shown by the arrow in those figures is input to the fuzzy controller 6, but the fuzzy Fuzzy operations are performed according to rules. In this case, fuzzy operations are performed according to the four fuzzy rules shown below.
【００１４】
ＩＦ 入力１＝ＮＬ ＡＮＤ 入力２＝ＺＯ
ＴＨＥＮ 出力＝ＰＬ…（１） ＩＦ 入力
１＝ＮＬ ＡＮＤ 入力２＝ＰＳ ＴＨＥＮ
出力＝ＰＬ…（２） ＩＦ 入力１＝ＮＳ ＡＮ
Ｄ 入力２＝ＺＯ ＴＨＥＮ 出力＝ＰＬ…（３
） ＩＦ 入力１＝ＮＳ ＡＮＤ 入力２＝Ｐ
Ｓ ＴＨＥＮ 出力＝ＰＬ…（４）そして、上記（
１）乃至（４）式の各ファジィルールにおいて、前件部
の各変数と入力値の最大（ＭＡＸ）をとり、それらの最
小（ＭＩＮ）をとって前件部の適合度を求め、後件部の
変数と前件部の適合度の最小（ＭＩＮ）をとって各ファ
ジィルールの結論とする。例えば（１）式のファジィル
ールの場合を例にして説明すると、図５および図６の矢
印に示されるように、前件部においては温度差ΔＴの入
力１とＮＬのメンバシップ関数の交差点の縦軸値ａが得
られ、後件部においては回転数の増減量のＰＬのメンバ
シップ関数をその得られた縦軸値ａで切断し、この切断
下部の台形図形（図７の斜線部分）がファジィルールの
演算結果にされる。IF input 1=NL AND input 2=ZO
THEN Output = PL...(1) IF Input 1 = NL AND Input 2 = PS THEN
Output = PL...(2) IF Input 1 = NS AN
D Input 2=ZO THEN Output=PL...(3
) IF input 1=NS AND input 2=P
S THEN Output = PL...(4) And the above (
In each fuzzy rule of formulas 1) to (4), take the maximum (MAX) of each variable and input value of the antecedent part, take the minimum (MIN) of them to find the fitness of the antecedent part, and then calculate the consequent part. The conclusion of each fuzzy rule is determined by taking the minimum (MIN) degree of fitness between the part variable and the antecedent part. For example, to explain the case of the fuzzy rule in equation (1), as shown by the arrows in FIGS. 5 and 6, in the antecedent part, the intersection of the input 1 of the temperature difference ΔT and the membership function of NL The vertical axis value a is obtained, and in the consequent part, the PL membership function of the increase/decrease in rotational speed is cut at the obtained vertical axis value a, and the trapezoidal figure at the bottom of this cut (hatched area in Fig. 7) is obtained. is made into the calculation result of the fuzzy rule.
【００１５】続いて、同様にして残りのファジィルール
に対する結論が求めれた後、全結論について最大（ＭＡ
Ｘ）がとられ、かつその重心に対応する値が推論結果と
して出力される。上記（１）乃至（４）式のファジィル
ールの場合には、上記回転数の増減量Δｆのメンバシッ
プ関数ＰＬについて上記（１）式のファジィルールの演
算結果が最大（ＭＡＸ）であることから、図７の斜線に
示す台形図が演算結論にされ、この図形の重心が推論結
果として出力される。なお、その出力値Δｆは、図７の
図形の重心を横軸に降ろした点である。この場合、同図
から明らかなように、その出力値Δｆが＋１に近くなっ
ていることから、圧縮機の回転数の増量Δｆは略最大値
にされることになる。Subsequently, after the conclusions for the remaining fuzzy rules are found in the same way, the maximum (MA
X) is taken, and the value corresponding to its center of gravity is output as the inference result. In the case of the fuzzy rules in equations (1) to (4) above, since the calculation result of the fuzzy rule in equation (1) is the maximum (MAX) for the membership function PL of the increase/decrease Δf in the rotation speed, , the trapezoidal diagram indicated by diagonal lines in FIG. 7 is used as the calculation conclusion, and the center of gravity of this diagram is output as the inference result. Note that the output value Δf is the point where the center of gravity of the figure in FIG. 7 is placed on the horizontal axis. In this case, as is clear from the figure, since the output value Δf is close to +1, the increase Δf in the rotational speed of the compressor is approximately the maximum value.
【００１６】ここで、上記ファジィコントローラ６にて
第１のファジィルール部４にしたがってファジィ演算が
行われた場合を説明すると、この場合入力１および入力
２の値が上記例と同じであれば、以下に示す３個のファ
ジィルールにしたがってファジィ演算が行われる。[0016] Now, to explain the case where the fuzzy controller 6 performs the fuzzy operation according to the first fuzzy rule unit 4, in this case, if the values of input 1 and input 2 are the same as in the above example, Fuzzy operations are performed according to the three fuzzy rules shown below.
【００１７】
ＩＦ 入力１＝ＮＬ ＡＮＤ 入力２＝ＺＯ
ＴＨＥＮ 出力＝ＰＭ…（５） ＩＦ 入力
１＝ＮＬ ＡＮＤ 入力２＝ＰＳ ＴＨＥＮ
出力＝ＰＳ…（６） ＩＦ 入力１＝ＮＳ ＡＮ
Ｄ 入力２＝ＺＯ ＴＨＥＮ 出力＝ＰＳ…（７
）そして、上記（５）乃至（７）式の各ファジィルール
について、上記同様にファジィ演算を行なうと、図８の
斜線部分に示す演算結果が得られる。この場合、同図か
ら明らかなように、重心Δｆが図７の台形図形よりも左
側（０側）に寄っており、つまり回転数の増量Δｆがそ
れだけ少なくなる。したがって、図９の二点鎖線Ｂに示
すように、表１に示す第１のファジィルール部４による
ファジィ演算においては回転数の増量Δｆがそれほど大
きくならず、室温（Ｔａ）が設定温度（Ｔｓ）に達する
まではある程度の時間（同図のｔｓ時間）が必要となる
。IF input 1=NL AND input 2=ZO
THEN Output = PM...(5) IF Input 1 = NL AND Input 2 = PS THEN
Output = PS...(6) IF Input 1 = NS AN
D Input 2=ZO THEN Output=PS...(7
) Then, when fuzzy calculations are performed in the same manner as above for each of the fuzzy rules in equations (5) to (7) above, the calculation results shown in the shaded area in FIG. 8 are obtained. In this case, as is clear from the figure, the center of gravity Δf is closer to the left side (0 side) than the trapezoidal shape in FIG. 7, that is, the increase Δf in the number of rotations is correspondingly smaller. Therefore, as shown by the two-dot chain line B in FIG. ) It takes a certain amount of time (ts time in the figure).
【００１８】しかし、図９の実線Ｃに示すように、表２
に示す第２のファジィルール部５によるファジィ演算に
おいてはその回転数の増減量Δｆが非常に大きくなるこ
とから、室温（Ｔａ）を急峻に上げ、速やかに設定温度
（Ｔｓ）に近づけることができる。また、その室温（Ｔ
ａ）が設定温度（Ｔｓ）に接近したときには、つまりそ
の温度差ΔＴが略零に近づいたときには、表２に示すフ
ァジィルールおよび各メンバシップ関数によると、回転
数の増減量Δｆが極め細かく、かつ速やかに変えられる
ため、室温（Ｔａ）が設定温度（Ｔｓ）を大幅に越える
こともなく、またむらのない安定した制御が行われる。However, as shown by the solid line C in FIG.
In the fuzzy calculation by the second fuzzy rule unit 5 shown in FIG. 1, the increase/decrease Δf in the rotational speed becomes very large, so that the room temperature (Ta) can be rapidly raised and quickly brought close to the set temperature (Ts). . Also, the room temperature (T
When a) approaches the set temperature (Ts), that is, when the temperature difference ΔT approaches approximately zero, according to the fuzzy rules and membership functions shown in Table 2, the increase/decrease Δf in the rotation speed becomes extremely fine. Moreover, since it can be changed quickly, the room temperature (Ta) does not significantly exceed the set temperature (Ts), and even and stable control is performed.
【００１９】続いて、図９に示すように、一定時間経過
したときには、例えば室温（Ｔａ）が設定温度（Ｔｓ）
近傍で保たれるようになったときには、ファジィルール
を切り替え、表１に示す第１のファジィルール部４のル
ールにしたがってファジィ演算が行われる。すなわち、
空気調和機の運転開始時のみ、第２のファジィルール部
５のルールが用いられるが、しかる後の通常運転中には
第１のファジィルール部４の制御ルールが用いられる。Subsequently, as shown in FIG. 9, when a certain period of time has elapsed, for example, the room temperature (Ta) reaches the set temperature (Ts).
When the values are maintained close to each other, the fuzzy rules are switched and fuzzy calculations are performed according to the rules of the first fuzzy rule unit 4 shown in Table 1. That is,
The rules of the second fuzzy rule unit 5 are used only when the air conditioner starts operating, but the control rules of the first fuzzy rule unit 4 are used thereafter during normal operation.
【００２０】このように、室内の環境状態に応じて最適
のファジィルールに切り替え、この切り替えたファジィ
ルールにしたがってファジィ演算制御を行なうようにし
たので、各環境状態に応じたファジィ演算を行なうこと
ができることから、室内をより快適環境に維持すること
ができる。[0020] In this way, the optimal fuzzy rule is switched according to the indoor environmental condition, and the fuzzy calculation control is performed according to the switched fuzzy rule, so that the fuzzy calculation can be performed according to each environmental condition. This allows you to maintain a more comfortable indoor environment.
【００２１】なお、上記実施例では暖房運転を例にして
説明したが、冷房運転であっても同様のファジィ制御を
行なうことができ、第１および第２のファジィルール部
４，５の他に異なるファジィルールを用いてもよい。ま
た、室内の環境状態を検出する方法としては、室温と設
定温度差、室温の温度変化率だけなく、他の条件によっ
てもよい。さらに、上記第１のファジィルール部４と第
２のファジィルール部５の切り替えは、例えば室温（Ｔ
ａ）が設定温度（Ｔｓ）に達したとき、その設定温度（
Ｔｓ）に達してから所定時間経過したとき、あるいは室
温（Ｔａ）が所定温度（Ｔｓ±α）に達したときであっ
てもよい。さらに、上記発明のファジィ演算は代表的な
ものであり、この他にも種々メンバシップ関数を用いて
もよい。さらに、ファジィコントローラ６を上記ファジ
ィ演算機能を有するマイクロコンピュータあるいはディ
スクリートな制御回路等に代えてもよい。Although the above embodiment has been explained using heating operation as an example, similar fuzzy control can be performed even in cooling operation, and in addition to the first and second fuzzy rule sections 4 and 5, Different fuzzy rules may be used. Further, as a method of detecting the indoor environmental condition, it is possible to use not only the difference between the room temperature and the set temperature, the temperature change rate of the room temperature, but also other conditions. Furthermore, switching between the first fuzzy rule section 4 and the second fuzzy rule section 5 is performed at, for example, room temperature (T
a) reaches the set temperature (Ts), the set temperature (
The temperature may be set when a predetermined time has elapsed after reaching Ts), or when the room temperature (Ta) reaches a predetermined temperature (Ts±α). Further, the fuzzy operation of the invention described above is a typical one, and various other membership functions may also be used. Furthermore, the fuzzy controller 6 may be replaced with a microcomputer or a discrete control circuit having the above-mentioned fuzzy calculation function.
【００２２】[0022]
【発明の効果】以上説明したように、この発明によれば
、室内の環境状態を検出し、この検出値を入力とし、所
定ファジィルールにしたがってファジィ演算し、この演
算結果により圧縮機の回転数を制御する空気調和機の制
御方法であって、その所定ファジィルールと異なる第２
のファジィルールを有し、当該空気調和機の運転開始時
にはその第２のファジィルールにしたがってファジィ演
算し、この演算結果により回転数を制御するようにした
ので、室内の環境状態の異なる運転開始時および運転中
にあっては最適のファジィルールを用いることができ、
特に運転開始時における室内の環境をより早く、かつ安
定して良好なものにすることができ、しかる後の運転中
にあっても室内を快適環境に維持することができるとい
う効果がある。As explained above, according to the present invention, the indoor environmental condition is detected, the detected value is used as input, fuzzy calculation is performed according to a predetermined fuzzy rule, and the rotation speed of the compressor is calculated based on the calculation result. A method for controlling an air conditioner that controls a second fuzzy rule that is different from the predetermined fuzzy rule.
When the air conditioner starts operating, fuzzy calculations are performed according to the second fuzzy rule, and the rotation speed is controlled based on the calculation result. And while driving, optimal fuzzy rules can be used.
In particular, the indoor environment can be quickly and stably made favorable at the start of driving, and the indoor environment can be maintained in a comfortable environment even during subsequent driving.
【図１】この発明の一実施例を示す空気調和機の概略的
制御ブロック図FIG. 1 is a schematic control block diagram of an air conditioner showing an embodiment of the present invention.
【図２】図１に示す空気調和機のファジィ演算に用いた
温度差ΔＴのメンバシップ関数のグラフ図[Figure 2] A graph of the membership function of the temperature difference ΔT used in the fuzzy calculation of the air conditioner shown in Figure 1.
【図３】図１
に示す空気調和機のファジィ演算に用いた温度変化率Δ
Ｔａ／ｔのメンバシップ関数のグラフ図[Figure 3] Figure 1
Temperature change rate Δ used for fuzzy calculation of air conditioner shown in
Graph diagram of membership function of Ta/t
【図４】図１に
示す空気調和機のファジィ演算結果を得る圧縮機の回転
数の増減量Δｆのメンバシップ関数のグラフ図FIG. 4 is a graph diagram of the membership function of the increase/decrease Δf in the rotational speed of the compressor to obtain the fuzzy calculation result of the air conditioner shown in FIG.
【図５】図１に示す空気調和機における１ファジィルー
ルの演算を説明する図[Fig. 5] A diagram explaining the calculation of one fuzzy rule in the air conditioner shown in Fig. 1.
【図６】図１に示す空気調和機における１ファジィルー
ルの演算を説明する図[Fig. 6] A diagram explaining the calculation of one fuzzy rule in the air conditioner shown in Fig. 1.
【図７】図１に示す空気調和機における１ファジィルー
ルの演算結果を説明する図[Fig. 7] A diagram explaining the calculation results of one fuzzy rule in the air conditioner shown in Fig. 1.
【図８】図１に示す空気調和機における１ファジィルー
ルの演算結果を説明する図[Fig. 8] A diagram explaining the calculation results of one fuzzy rule in the air conditioner shown in Fig. 1.
【図９】室温の温度変化曲線を示すグラフ図[Figure 9] Graph diagram showing the temperature change curve of room temperature
１ 室温設定部 ２ 室温検出部 ３ 演算部 ４ 第１のファジィルール部 ５ 第２のファジィルール部 ６ ファジィコントローラ ７ 圧縮機 ８ 圧縮機制御部 1 Room temperature setting section 2 Room temperature detection part 3 Arithmetic unit 4 First fuzzy rule section 5 Second fuzzy rule section 6 Fuzzy controller 7 Compressor 8 Compressor control section
Claims (3)
、室外温度、湿度、輻射熱等により室内の環境状態を検
出し、この検出値を入力とし、所定ファジィルールにし
たがってファジィ演算し、このファジィ演算結果により
その圧縮機の回転数を制御する空気調和機の制御方法で
あって、少なくとも前記所定ファジィルールと異なる第
２のファジィルールを有し、当該空気調和機の運転開始
時にはその第２のファジィルールにしたがって圧縮機の
回転数を制御し、しかる後前記所定ファジィルールにし
たがって圧縮機の回転数を制御するようにしたことを特
徴とする空気調和機の制御方法。[Claim 1] Equipped with a variable capacity compressor, the indoor environmental condition is detected based on indoor temperature, outdoor temperature, humidity, radiant heat, etc., and this detected value is used as input and fuzzy calculation is performed according to a predetermined fuzzy rule. A control method for an air conditioner that controls the rotation speed of a compressor based on a fuzzy calculation result, the method having at least a second fuzzy rule different from the predetermined fuzzy rule, and when the air conditioner starts operating, the second fuzzy rule is A method for controlling an air conditioner, comprising: controlling the rotation speed of the compressor according to the fuzzy rule, and then controlling the rotation speed of the compressor according to the predetermined fuzzy rule.
、室温と設定温度の差およびその室温の温度変化率を入
力とし、この入力による演算結果を前記圧縮機の回転数
の増減量とした請求項１記載の空気調和機の制御方法。2. In the calculation based on the fuzzy rule, the difference between the room temperature and the set temperature and the temperature change rate of the room temperature are input, and the calculation result based on this input is used as the increase/decrease in the rotation speed of the compressor. How to control an air conditioner.
定ファジィルールと比較し、少なくとも室温が設定温度
（Ｔｓ）に近づくまでは前記圧縮機の回転数をより高く
した請求項１記載の空気調和機の制御方法。3. The air conditioner according to claim 1, wherein the second fuzzy rule makes the rotation speed of the compressor higher than the predetermined fuzzy rule until at least the room temperature approaches a set temperature (Ts). How to control the machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3035658A JPH04254140A (en) | 1991-02-04 | 1991-02-04 | Method for controlling air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3035658A JPH04254140A (en) | 1991-02-04 | 1991-02-04 | Method for controlling air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04254140A true JPH04254140A (en) | 1992-09-09 |
Family
ID=12447975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3035658A Pending JPH04254140A (en) | 1991-02-04 | 1991-02-04 | Method for controlling air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04254140A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012240571A (en) * | 2011-05-20 | 2012-12-10 | Mitsubishi Electric Corp | Air conditioner for vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5875637A (en) * | 1981-10-30 | 1983-05-07 | Toshiba Corp | Control system of heating operation |
| JPH02219941A (en) * | 1989-02-21 | 1990-09-03 | Mitsubishi Heavy Ind Ltd | Method for controlling air conditioner |
-
1991
- 1991-02-04 JP JP3035658A patent/JPH04254140A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5875637A (en) * | 1981-10-30 | 1983-05-07 | Toshiba Corp | Control system of heating operation |
| JPH02219941A (en) * | 1989-02-21 | 1990-09-03 | Mitsubishi Heavy Ind Ltd | Method for controlling air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012240571A (en) * | 2011-05-20 | 2012-12-10 | Mitsubishi Electric Corp | Air conditioner for vehicle |
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