Modeling and control design of active suspension system with load effect / by J. L. Sheng, author, Yahya Md. Sam, author, NM. Suaib, author, R. Ghazali, author, Zulfatman, 1978-, author, N. Hamzah, author, The Second International Conference on Control, Instrument and Mechatronic Engineering (CIM09) June 2-3, 2009 (2009: Malacca, Malaysia)