垂直居中部分标题

Question

如何使部分标题“摘要表”垂直居中？

\documentclass[11pt,a4paper,titlepage]{article}
\usepackage{lipsum}
\usepackage{graphicx}
\usepackage[a4paper,margin=1.0in]{geometry}
\usepackage{fancyhdr}
\usepackage{sectsty}
\sectionfont{\centering}
\subsectionfont{\centering}
\fancyhf{} 

\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\setlength\headheight{80.0pt}
\addtolength{\textheight}{-80.0pt}
\chead{\includegraphics[width=\textwidth]{Header}}
\cfoot{\includegraphics[width=\textwidth]{Footer}}

\begin{document}
\title{\vspace{-40mm}\Huge Compressed Air} 
\date{\Large ATLAS COPCO}
\maketitle
\tableofcontents
\thispagestyle{fancy}
\newpage

\section{Summary Sheet}

\thispagestyle{fancy}
\end{document}