variable valve control 中文意思是什麼
variable valve control
解釋
變動閥控制-
This paper supplied a new way through variable frequency variable speed ( vfvs ) to change its output flow rate and adding a constant - pressure - drop valve, which could solve the defects in hydraulic pressure servo control system, such as low efficiency in control system, short life, poor ability in resisting pollution, low efficiency in driving system and flow rate, pressure pulse. and this way was proved to be effective
本論文針對傳統伺服控制系統效率不高、元件壽命短、抗污染能力差、驅動系統效率低、存在流量及壓力脈動等缺陷，利用先進的交流變頻調速技術改變液壓泵轉速的容積調速新方法，提出了在液壓系統中加一個定差減壓閥的新思路，較好地解決了液壓伺服系統存在的上述問題。 -
So the sliding mode variable structure controller was discussed, which has strong robustness against the disturbance, and the chattering phenomenon inherited from vsc was taken advantage to regular valve vibration for the purpose of avoiding coagulation on it, while precision of level control can be almost unaffected. but for the reason of control limitation, especially the acceleration insufficiency, the continuous time quasi - sliding mode vsc for one class of controllable system, as the substitution of ideal sliding mode control system, which was impossible to implemented, was researched, including the three essentials, reaching condition in particular, and the chattering ex - pression was given. furthermore, the effect to quasi - sliding mode motion and chatter - ing expression by extent disturbance was also analyzed
由於控制量相對受限制，並且主要體現在控制量加速不足方面，無法實現理想的滑模變結構控制，因此本文研究了一類能控系統在這種情況下的連續系統準滑模變結構控制，包括變結構控制三要素，尤其是到達條件；並且針對塞棒掛渣問題，給出了該情況下抖振的表達式；魯棒性方面，分析了外界擾動對準滑模運動的影響，並且給出了外擾作用下抖振的表達式。 -
The hydraulically actuating, electronically controlled variable valve actuator, the common rail hydraulical source and the electronic control unit have been designed and developed. the primary control strategies of the valve timing in different conditions have been discussed. the performance of the system has been researched deeply by experiments, from which, plenty of rules have been obtained, and the way to adjust valve timing, lift and duration has been put forward
研製了電控可變氣門系統的執行器? ?電控可變氣門驅動機構，設計了電控可變氣門系統的液壓驅動源? ?中壓共軌液壓源，開發了電控可變氣門系統的電子控制單元，實現了在不同工況下，氣門正時、氣門開啟持續期、氣門升程柔性的電子控制，並對不同工況下配氣正時的控制策略進行了初步探討。 -
Apart from these, the paper also proposes several improvements for pump control, which include changeable cut off control that can prevent several kinds of relief loss of hydraulic system, cross sensing control of pump that can enlarge the variable working range and compound control that combine two kinds of valve control method together
此外，還提出了幾種泵控改進方案，其中包括可防止多種系統溢流狀態的可變壓力切斷控制、能增大泵的變量工作范圍的交叉功率傳感控制以及將兩種閥控策略結合在一起的復合控制技術。 -
In power decentralized system, there are not pump / fan installed in main pipe, but also in branches, using the variable speed control to regulating the flow, valve energy consumption can be reduced or avoided, but the investment is higher and control is complicated
動力分散系統不但在系統的母管上，而且在各支路上設泵（或風機） ，並實行變速控制以調節流量，可以減少乃至消除調節閥能耗，但投資增大，控制復雜。 -
Theory and experiment study of variable displacement control valve in automotive air conditioning compressors
汽車空調壓縮機變排量控制閥理論與實驗研究 -
The experimental result indicates that the neuronic learning by making input variable fuzzy and self - adjusting algorithm have strong self - adjustment, quick response and good robustness for the pressure control of metallurgical valve
試驗結果表明，這種通過對輸入變量模糊化的神經元學習和在線自調整演算法，對其冶金閥門的壓力控制具有很強的自適應性，且響應程度快、魯棒性好。 -
This paper is focused on the mathematical description of hydraulic control system, in which the hydraulic power comes from variable pump, the actuators are two valve - controlled motors, and the load is purely inertial
摘要探討了由變數泵為液壓源、 2個閥控馬達為執行元件以及慣性負載組成的液壓控制系統的數學描述，並給出了其線性化模型。 -
In the light of significant energy losing during the hydraulic excavator working, a dynamic system was made up from the diesel engine, the variable pump, the control valve and the load to cut down the losing energy from a systematic approach based on the control characteristics of the system elements
摘要針對液壓挖掘機在工作過程中存在的大量能量損失，根據泵的控制特性曲線，將發動機、變量泵、控制閥及負載作為一個動態系統來研究其節能問題。
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