💥1 概述
按照电机试验的完整性,可以将电机试验分为型式试验、单项目或部分项目试验等;其中型式试验包括产品的性能试验、安全试验、气候适应性试验和机械适应性试验等,其目的是全面考查产品的符合性;单项目或部分项目试验是为了验证某些参数指标或性能而进行的试验。
📚2 运行结果
🎉3 参考文献
[1]王明中,谢剑英,陈应麟.一种新的Kth最短路径搜索算法[J].计算机工程与应用,2004(30):49-50+89.
👨💻4 Matlab代码
主函数部分代码:
clear all; run data_base.m %% calculate params hg = 15*1000; % geometric altitude R_earth = 6.3781E6; % m h = R_earth*hg./(R_earth+hg); [~, ~, P, rho] = atmosisa(h); [~, ~, P0, rho0] = atmosisa(0); Vac = [0:1:80]'; % airspeed range, m/s for i = 1:length(data) data(i).A =pi*data(i).r^2; %m^2 data(i).eff = data(i).thrust_g./data(i).power; %[g/W], efficiency data(i).throttle = (data(i).throttle100+100)/200; % normalize throttle data(i).k2 = 1.5; % experimental correction factor exponent data(i).Ve = data(i).throttle * data(i).max_RPS * data(i).pitch; % ideal induced flow speed due to porpeller data(i).k1 = (data(i).thrust ./(rho0 * data(i).A * data(i).Ve.^2)).^(1/data(i).k2) * (data(i).pitch/(2*data(i).r)); data(i).correction = (data(i).k1*2*data(i).r./data(i).pitch).^data(i).k2; T_dyn = zeros(length(Vac),length(data(i).throttle)); % approximated formula for j = 1:length(data(i).throttle) T_dyn(:,j) = rho * data(i).A * (data(i).Ve(j).^2 - data(i).Ve(j)*Vac) * data(i).correction(j); end data(i).T_dyn = T_dyn; end