基于極小值原理的混動(dòng)瞬時(shí)優(yōu)化能量管理策略
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【摘 要】以發(fā)動(dòng)機(jī)瞬時(shí)燃油消耗最小為目標(biāo)建立性能泛函,通過(guò)發(fā)動(dòng)機(jī)、電機(jī)、電池?cái)?shù)學(xué)模型建立Hamilton目標(biāo)函數(shù),采用最優(yōu)控制的Pontryagin極小值原理解析目標(biāo)函數(shù),在控制集范圍內(nèi)搜索使目標(biāo)函數(shù)達(dá)到最小值的最優(yōu)控制變量,從而計(jì)算出控制電機(jī)扭矩與發(fā)動(dòng)機(jī)扭矩的最優(yōu)控制值。
【關(guān)鍵詞】混合動(dòng)力;極小值原理;瞬時(shí)優(yōu)化;能量管理策略
中圖分類號(hào):U469.72 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1003-8639( 2024 )08-0018-03
Hybrid Instantaneous Optimization Energy Management Strategy Based on Minimum Principle
WANG Liping,WANG Yuanbo,HOU Bobo,WANG Fujun
(Shaanxi Heavy-duty Automobile Co.,Ltd.,Xi′an 710200,China)
【Abstract】Establish a general letter of performance with the minimum of the engine instantaneous fuel consumption. The Hamilton target function is established through the engine,motor,and battery mathematical model. Using Pontryagin’s minimal principle analysis target function,the optimal control variables that make the target function reach the minimum value within the control set range,thereby calculating the optimal control value of the control motor torque and the engine torque.
【Key words】hybrid system;Pontryagin’s minimum principle;instantaneous optimization;energy management strategy
1 混合動(dòng)力能量管理策略分類
重度混合動(dòng)力汽車(chē)的關(guān)鍵性能指標(biāo)之一就是燃油經(jīng)濟(jì)性,低油耗已經(jīng)成為新能源混動(dòng)車(chē)型研究的熱點(diǎn)。(剩余4128字)