1function y = regulators2(x,Z1) 2 3persistent sumator 4 5 6u1 = Z1(1:end-1)*x; 7u2 = 0; 8if isempty(sumator) 9 sumator = 0; 10 y = 0; 11 return 12end 13 14sumator = sumator + x(1); 15y = sumator;