Robust <svg xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" style="vertical-align:-4.50008pt;width:73.462502px;" id="M1" height="21.450001" version="1.1" viewBox="0 0 73.462502 21.450001" width="73.462502">
	
		
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			<g transform="matrix(.022,-0,0,-.022,27.875,15.825)"><path id="x2F" d="M368 703l-264 -866h-60l265 866h59z"></path></g><g transform="matrix(.022,-0,0,-.022,37.11,15.825)"><use xlink:href="#x1D43B"></use></g>

			<g transform="matrix(.016,-0,0,-.016,56.775,21.2)"><path id="x221E" d="M983 225q0 -112 -67 -174.5t-150 -62.5q-91 0 -154.5 43.5t-113.5 129.5q-49 -85 -104 -129t-138 -44q-98 0 -158.5 66t-60.5 154q0 59 21 106.5t54.5 75.5t70.5 43t73 15q90 0 152.5 -43.5t112.5 -128.5q48 84 104.5 128t140.5 44q93 0 155 -65t62 -158zM478 196
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</svg> Control for the Electrohydraulic Steering System of a Four-Wheel Vehicle

<table>Schematic diagram of 4WS vehicle.</table>

Mathematical Problems in Engineering

fig1

Figure 1

Figure 1: Robust <svg xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" style="vertical-align:-4.50008pt;width:73.462502px;" id="M1" height="21.450001" version="1.1" viewBox="0 0 73.462502 21.450001" width="73.462502">
	
		
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h263l-6 -28q-58 -5 -75.5 -21t-30.5 -81l-26 -153h377l29 153q12 67 2 81t-74 21l5 28h268z"></path></g>

			<g transform="matrix(.016,-0,0,-.016,19.725,21.2)"><path id="x32" d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z"></path></g>

			<g transform="matrix(.022,-0,0,-.022,27.875,15.825)"><path id="x2F" d="M368 703l-264 -866h-60l265 866h59z"></path></g><g transform="matrix(.022,-0,0,-.022,37.11,15.825)"><use xlink:href="#x1D43B"></use></g>

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</svg> Control for the Electrohydraulic Steering System of a Four-Wheel Vehicle 

Mathematical Problems in Engineering

Robust Control for the Electrohydraulic Steering System of a Four-Wheel Vehicle

Figure 1