A novel road dynamic simulation approach for vehicle driveline experiments

Abstract

A dynamic simulation approach for performing emulation experiments on vehicle driveline test bench is discussed in this paper. In order to reduce costs and shorten new vehicle development cycle time, vehicle simulation on the driveline test bench is an attractive alternative at the development phase to reduce the quantity of proto vehicles. This test method moves the test site from the road to the bench without the need for real chassis parts. Dynamic emulation of mechanical loads is a Hardware-in-the-loop (HIL) procedure, which can be used as a supplement of the conventional simulations in testing of the operation of algorithms without the need for the prototypes. The combustion engine is replaced by a electric drive motor, which replicates the torque and speed signature of an actual engine, The road load resistance of the vehicle on a real test road is accurately simulated on load dynamometer motor. On the basis of analyzing and comparing the advantages and disadvantages of the inverse dynamics model and the forward model based on speed closed loop control method, in view of the high order, nonlinear and multi variable characteristics of test bench system, a load simulation method based on speed adaptive predictive control is presented. It avoids the complex algorithm of closed loop speed compensation, and reduces the influence of inaccurate model parameters on the control precision of the simulation system. The vehicle start and dynamic shift process were simulated on the test bench.

Research on the Modeling, Control, and Calibration Technology of a Tracked Vehicle Load Simulation Test Bench

“…In Reference [19,20], non-linear factors of the test bench are analyzed, and the effects of elasticity and backlash nonlinearity on the system performance are fully considered. Aiming at the high-order, non-linear, and multi-variable characteristics of the test-bed system, control methods suitable for each test-bed are proposed.…”

Emulação de sistemas mecânicos acoplados a máquinas elétricas rotativas

“…Figura 10 -Diagrama da estratégia de emulação proposta em malha fechada de velocidade por Rodic, Jezernik e Trlep (2006 Em Li et al (2019) é proposto o uso de controle preditivo na malha de velocidade da máquina de emulação, onde a velocidade proveniente do modelo de emulação é predita.…”

“…Na literatura é apresentado o uso de máquinas elétricas como máquinas de emulação em diversas aplicações, tais como: motor de combustão (THOMAS; SAUER, 1999; LI et al, 2019), condições de escavação em máquinas de mineração (BETZ; MIRZAEVA; SUM-MERS, 2010), máquinas a gás (GAN; TODD; APSLEY, 2015; CORREA et al, 2013), turbinas hidrocinéticas (CAVAGNARO et al, 2016), conversores de energia das ondas com pás rotativas (HAZRA; BHATTACHARYA, 2018), turbinas eólicas (AVEROUS et al, 2017; SAJADI et al, 2016; MARTINEZ; HERRERO; PABLO, 2014; YAN; FENG; DONG, 2016) e veículos elé-tricos (ZHANG et al, 2017; FAJRI; PRABHALA; FERDOWSI, 2016; FAJRI et al, 2016) ou condições de um determinado trajeto aplicado a um veículo (LI et al, 2019). A emulação de sistemas dinâmicos pode ser aplicada a fins didáticos (KUPERMAN; RABINOVICI, 2005), sistemas isolados ou ainda a sistemas elétricos de potência (EDRINGTON et al, 2015; HUERTA; TELLO; PRODANOVIC, 2017).…”