- N. Kawamura, K.Z. Liu, T. Zanma: Position estimation error reduction method for position sensorless controlled IPMSM at switching saliency-based method to flux observer-based method, Proc. of CCC 2019, pp. 2553-2557, Guangzhou, China (2019. 7)
- S. Haga, T. Zanma, K. Koiwa, K.Z. Liu: Optimal automatic formation control for two-wheeled vehicles using model predictive control with formation keeper, Proc. of CCC 2019, pp. 3186-3189, Guangzhou, China (2019. 7)
- W. Hatsumata, T. Zanma, K. Koiwa, K.Z. Liu: A study on improvement of switching control using network traffic estimation of networked control with data dropout, Proc. of CCC 2019, pp. 5389-5392, Guangzhou, China (2019. 7)
- J. Akiba, K. Koiwa, T. Yoshida, K.Z. Liu, T. Zanma, A Robust Controller Design Method for Single-Phase PWM Inverter Based on Positive Realness, Proc. of CCC 2019, pp. 7373-7376, Guangzhou, China (2019. 7)
- K. Inoo, K. Koiwa, K.Z. Liu, T. Zanma, An Accurate Model of Virtual Synchronous Generator for Grid-Connected Inverter, Proc. of CCC 2019, pp. 7377-7380, Guangzhou, China (2019. 7)
- T. Ishii, K. Koiwa, K.Z. Liu, T. Zanma, J. Tamura, A Novel ESS Controller to MitigateWind Farm Output without Phase-lag, Proc. of CCC 2019, pp. 7381-7384, Guangzhou, China (2019. 7)
- P. Yu, K.Z. Liu, M. Yokoyama, M. Wu: Robust Control of Contact Force for Pantograph-Catenary System, Proc. of SICE 2018, Nara, Japan (2018. 9)
- S. Kuroki, K.Z. Liu, T. Mizuno, X. Yang, C. Zhang: Modeling of High-Speed Motor Drive Systems Considering Two Kinds of Vibrations, Proc. of IC-MSQUARE 2018, Moscow, Russia (2018. 8)
- Y. Nomura, Y. Takagi, T. Zanma, K. Koiwa and K.Z. Liu: The voltage vector projection method for sensorless of PMSM in model predictive control, Proc. of CCC 2018, pp. 2115-2118, Wuhan, China (2018. 7)
- T. Kuribayashi, Y. Takagi, T. Zanma, K. Koiwa and K.Z. Liu: Online parameter estimation in model predictive current control for PMSM, Proc. of CCC 2018, pp. 2111-2114, Wuhan, China (2018. 7)
- J. Akiba, K.Z. Liu, K. Koiwa and M. Wu: A design method for robust performance based on the positive realness and gain information of uncertainty, Proc. of CCC 2018, pp. 2597-2600, Wuhan, China (2018. 7)
- P. Yu, K.Z. Liu, M. Wu and J. She: Robust disturbance-rejection for a class of nonlinear systems, Proc. of CCC 2018, pp. 2619-2624, Wuhan, China (2018. 7)
- Y. Uchiyama, S. Fujisawa, T. Zanma, K. Koiwa and K.Z. Liu: Optimal event-triggered control in netwirked control systems, Proc. of CCC 2018, pp. 3768-3771, Wuhan, China (2018. 7)
- S. Haga, K. Hoshikawa, T. Zanma, K. Koiwa and K.Z. Liu: Optimal automatic formation control for two-wheeled vehicles using model predictive control with temporal logic constraints, Proc. of CCC 2018, pp. 3772-3775, Wuhan, China (2018. 7)
- T.Z. Soe, A. Tokunaga, T. Zanma, K. Koiwa and K.Z. Liu: Quantized state feedback control system with variable quantizer using quantization center, Proc. of CCC 2018, pp. 3808-38111, Wuhan, China (2018. 7)
- Y. Li, K. Koiwa, K.Z. Liu and T. Zanma: An optimal control strategy for improved FRT capability of doubly fed induction generator, Proc. of CCC 2018, pp. 8733-8736, Wuhan, China (2018. 7)
- K. Koiwa, Y. Li, K.Z. Liu, T. Zanma and J. Tamura: A new control method for the full converter of permanent magnet synchronous generators, Proc. of CCC 2018, pp. 8748-8751, Wuhan, China (2018. 7)
- H. Haraike, T. Ishii, K. Koiwa, K.Z. Liu and M. Wu: Analysis of wind speed characteristics and its application to wind farm operation, Proc. of CCC 2018, pp. 8776-8779, Wuhan, China (2018. 7)
- C. Gan, W. Cao and K.Z. Liu: To improve drilling efficiency by multi-objective optimization of operational drilling parameters in the complex geological drilling process, Proc. of CCC 2018, pp. 10238-10243, Wuhan, China (2018. 7)
- T. Tawara, K. Koiwa and K.Z. Liu: An Optimal Fluctuation Control Method of Wind-Farm Output Using Inertia of Wind Turbines and Its Reduction Effect on Battery’s Capacity, Proc. of ICIIE 2017, Dubai, UAE (2017.12)
- S. Akita, K. Koiwa and K.Z. Liu: An Algebraic Online Parameter Estimation Method with Novel Update Strategy for The Four-Quadrant Vector Control of Induction Motors, Proc. of ICIIE 2017, Dubai, UAE (2017.12)
- M. Wakaiki, T. Zanma, K.Z. Liu: Quantized output feedback stabilization by Luenberger observers, Proc. of IFAC WC 2017, Toulouse, France (2017. 7)
- K. Koiwa, K. Suzuki, K.Z. Liu, J. Tamura, M. Wu: H∞ Control Approach to the Minimization of Energy Capacity of Energy Storage System, Proc. of CCC 2017, pp. 10584-10587, Dalian, China (2017. 7)
- S. Akita, K. Koiwa, K.Z. Liu, T. Yoshida, Y. Tadano, M. Nomura, M. Wu: An Online Parameter Estimation Method for the Four-Quadrant Vector Control of Induction Motors Based on UKF, Proc. of CCC 2017, pp. 3349-3352, Dalian, China (2017. 7)
- S. Shimonomura, K.Z. Liu, T. Akiyama, T. Yamaguchi, Y. Tadano, M. Nomura, M.Wu: A Passivity Based Robust Design Method for The Control of Engine Benches, Proc. of CCC 2017, pp.3194-3197, Dalian, China (2017. 7)
- H. Haraike, S. Nugroho, K.Z. Liu, M. Wu: Economic Operation of Power System with Large Scale Wind Farms Based on Statistics of Wind Power, Proc. of CCC 2017, pp. 9193-9196, Dalian, China (2017. 7)
- G.B. Li, T. Zanma, M. Wakaiki, K.Z. Liu: Design of Networked Control Systems in Consideration of Quantization Error and Chnnel Capacity, Proc. of CCC 2017, pp. 7837-7840, Dalian, China (2017. 7)
- D. Hashimoto, T. Zanma, M. Wakaiki, K.Z. Liu: Estimation of Network Traffic Status for Networked Control Systems with Data Dropout and Its Control, Proc. of CCC 2017, pp. 7793-7796, Dalian, China (2017. 7)
- S. Takayasu, T. Zanma, M. Wakaiki, K.Z. Liu: Stability and Performance Analysis of Receding Horizon Quantizer in Single-Input System, Proc. of CCC 2017, pp. 7783-7786, Dalian, China (2017. 7)
- Y. Takagi, K. Kenta, T. Zanma, M. Wakaiki, K.Z. Liu: Electrical angle estimation of rotor for PMSM in model predictive current control, Proc. of CCC 2017, pp. 4614-4617, Dalian, China (2017. 7)
- S. N. Christian, K.Z. Liu: Online wavelet based control of hybrid energy storage systems for smoothing wind farm output, Proc. of IECON 2016, Firenze, Italy (2016.10)
- M. Watanabe, K. Koiwa and K.Z. Liu: New optimization method for the smoothing of wind farm output by using kinetic energy, Proc. of IECON 2016, Firenze, Italy (2016.10)
- A. Tokunaga, T. Zanma and K.Z. Liu: Optimal dynamic quantizer and input in quantized feedback control system, Proc. of IECON 2016, Firenze, Italy (2016.10)
- S. Fujisawa, T. Zanma and K.Z. Liu: Optimal plant data transmission in networked control systems, Proc. of IECON 2016, Firenze, Italy (2016.10)
- Y. Takagi, S. Tozawa, K. Koiwa, T. Zanma, M. Wakaiki, K.Z. Liu, Y. Aoki, H. Yoshida and M. Fujitsuna: Electrical angle estimation of rotor for PMSM in model predictive current control, Proc. of ICEMS 2016, Makuhari, Japan (2016)
- Sho Shimonomura, Kang-Zhi Liu, Takao Akiyama, Yugo Tadano and Masakatsu Nomura: A Passivity Based Robust Design Method for The Control of Engine Benches, Proc. of CCC2016, Chengdu (2016.07)
- Watanabe Mizuki, Kenta Koiwa and Kang-Zhi Liu: An Optimization Approach to The Fluctuation Control of Wind-Farm Output, Proc. of CCC2016, Chengdu (2016.07)
- Enkhtuvshin Munkhbayasgalan, Kang-Zhi Liu and TADANAO ZAMMA: A New Peak-Cut Method for Smart Grid, Proc. of CCC2016, Chengdu (2016.07)
- Kenta Koiwa and Kang-Zhi Liu: Design of Battery Capacity and Control System Based on the Frequency Characteristics of Power System, Proc. of CCC2016, Chengdu (2016.07)
- Munkhbayasgalan Enkhtuvshin, Kang-Zhi Liu, and Tadanao Zanma: Economic Operation of Smart Grid Based on The Statistics of Renewable Energy, Proc. of IEEE ISGT Asia 2015, CD-ROM, Bangkok (2015.11)
- Kang-Zhi Liu, Masao Ono and Xiaoli Li: Revisiting The Robust Performance Problem, Proc. of SICE2015, pp.650-653, Hangzhou (2015.07)
- Kang-Zhi Liu, Masao Ono and Xiaoli Li: A Positive Real Method for Robust Performance Design Problem from An Input-Output Signal Approach, Proc. of SICE2015, pp.654-659, Hangzhou (2015.07)
- Tomo Inafuku and Kang-Zhi Liu: Improvement of power system’s transient stability with a saturation control method, Proc. of SICE2015, pp.1082-1085, Hangzhou (2015.07)
- Kang-Zhi Liu, Msashi Yokoo and Keiichiro Kondo: Direct vector control of induction motors based on independent estimation of resistance and flux, Proc. of ASCC2015, Kota Kinabalu (2015.06)
- Satoshi Tozawa, Tadanao Zanma, Kang-Zhi Liu, Yasuaki Aoki and Hideji Yoshida: Model predtictive current control for PMSM considering trade-off between current ripple and number of switching operations, Proc. of ASCC2015, Kota Kinabalu (2015.06)
- Koki Hoshikawa, Tadanao Zanma, Noriaki Ogura, Kang-Zhi Liu: Optimal formation control of two-wheeled vehicles using model predictive control, Proc. of ASCC2015, Kota Kinabalu (2015.06)
- T. Shiratori, T. Zanma and K.Z. Liu: Tracking control of optimal quantization feedback control systems with variable discrete quantizer, Proc. of IECON 2016, pp.4818-4823 (2014)
- T. Zanma, Y. Yasumura and K.Z. Liu: Model predictive current control for PMSM considering number of switching operations, Proc. of IPEC 2014 - ECCE ASIA, Hiroshima, pp.3568-3573 (2014)
- T. Mori, Y. Kawamura, T. Zanma and K.Z. Liu: Compensation of networked control systems with time-delay, Proc. of IEEE AMC 2014, pp.752-757 (2014)
- Takafumi Nori, Kang-Zhi Liu and Tadano Zanma: Advanced Torque Control for An Engine Bench System, Proc. of CCC2014, pp.8042-8046, Nanjing (2014.07)
- Tomo Inafuku and Kang-Zhi Liu: Application of A Saturation Control Method to The Transient Stabilization of Power Systems, Proc. of CCC2014, pp.2316-2319, Nanjing (2014.07)
- Yuping LIU, Kang-Zhi Liu, Xiaofeng Yang: Hysteresis Compensation Control for Reluctance Actuator Force Using Neural Network, Proc. of CCC2013, Xian (2013.07)
- Kang-Zhi Liu, Keigo Arima, Keiichiro Kondo: Adaptation of Stator and Rotor Resistances for The Vector Control of Induction Motors: A Method Based on Reduced Order Current Observer, Proc. of CCC2013, Xian (2013.07)
- Wei Wang, Kang-Zhi Liu, Tadanao Zanma: A Gain Scheduled Method for Speed Control of Wind Driven Doubly Fed Induction Generator, Proc. of 2013 Power and Energy Engineering Conference, Sanya (2012.12)
- Kang-Zhi Liu, Yu Yao: Positive Real Method for Robust Control Problems, Proc. of CCC2012, Hefei (2012.07)
- Kang-Zhi Liu, Y. Yokozawa: An MPC-PI approach for buck DC-DC converters and its implementation, Proc. of IEEE ISIE’2012, pp.171-176 (2012.5), Hangzhou (2012.05)
- H. Kinoshita, K.Z. Liu, A. Zaharin and Y. Yokozawa: High performance algorithms for the control and load identification of boost DC-DC converters, Proc. of IEEE VPPC 2010, France (2010.9)
- K.Z. Liu and B. Shirnen: Neo-robust control theory for factorized uncertainty, Proc. of IEEE CDC-CCC, pp.650-655 (2009.12)
- K.Z. Liu, K. Kondo and Y. Sato: A Constrained Optimization Based Torque Control Approach For Inverter-Fed Induction Motors, Proc. of ICEMS2009, CD-ROM (2009.11)
- K.Z. Liu: A constrained optimization based approach to the control of inverters, Proc. of IEEE IECON2009, pp.19-24 (2009.11)
- K.Z. Liu: A Constrained Optimization Approach to The Control of Inverters: Beyond the PWM technique, Proc. of ICCAS-SICE 2009, pp.976-981 (2009.8)
- K.Z. Liu and H. Kobayashi: Neo-Robust Control Theory (Part I): Uncertainty Model and Robust Stability Analysis, Proc. of ASCC 2009, pp.802-807 (2009.8)
- K.Z. Liu and H. Kobayashi: Neo-Robust Control Theory (Part II): Analysis of Robust Sensitivity and Robust Bandwidth, Proc. of ASCC 2009, pp.808-813 (2009.8)
- K.Z. Liu: An experimental comparison of nonholonomic control methods, Proc. of ICINCO’09, pp.208-213 (2009.7)
- R. He, K.Z. Liu and S. Mei: LPV modeling and gain-scheduled control approach for the transient stabilization of power systems, Proc. of IEEE ICIEA’09, pp.29-34 (2009.5)
- A. Zaharin Ahmad and K.Z. Liu: A new model predictive control approach to the DC-DC converters based on combinatory optimization, Proc. IECON 2008, pp.460-465 (2008.11)
- A. Zaharin Ahmad and K.Z. Liu: A new model predictive control approach to the DC-DC converters based on combinatory optimization, Proc. SICE 2008, pp.1323-1328 (2008.9)
- K.Z. Liu: Neo-robust control theory: how to make use of the phase information of uncertainty, Proc. of 2008 IFAC world conference, pp.5962-5968 (2008.7)
- D. Akasaka and K.Z. Liu: Nonlinear output control for linear systems with input saturation, Proc. of 2008 IFAC world conference, pp.15154-15159 (2008.7)
- K.Z. Liu and H.J. Guo: Optimal switching control for inverters: A dynamic combinatorial optimization approach, Proc. of IEEE ICIT2008, CD-ROM (2008.4)
- D. Akasaka and K.Z. Liu: Nonlinear feedback control for a class of on-off control systems: An approach based on analytic solution of PDE’s, Proc. of IEEE CDC’2007, pp.86-91 (2007)
- D. Akasaka and K.Z. Liu: Sliding mode free analysis for linear systems with discontinuous on-off type actuators, Proc. of IEEE CDC’2007, pp.3227-3232 (2007)
- K.Z. Liu: Beyond the small-gain paradigm: How to make use of the phase information of uncertainty, Proc. of SICE’2007, pp.421-426 (2007.9) [SICE’2007 International Award受賞論文]
- K.Z. Liu: Beyond the small-gain paradigm: How to make use of the phase information of uncertainty, Proc. of CCC’2007, pp.627-631 (2007.7)
- K.Z. Liu and M. Horii: An experimental comparison of nonholonomic control methods: Automatic parking benchmark, Proc. of ECC’2007, pp.2039-2044 (2007.7)
- D. Akasaka and K.Z. Liu: Stabilization of a class of on-off control systems by nonlinear state feedback, Proc. of ECC’2007, pp.667-672 (2007.7)
- D. Akasaka and K.Z. Liu: Stability Analysis of A Class of On-Off Feedback Systems in Filippov Framework, Proc. of CDC’2006, pp.6253-6258 (2006.12)
- M.Q. Dao and K.Z. Liu: Development of A Practical Automatic Parking Technology for Automobiles, Proc. of CDC’2006, pp.1727-1732 (2006.12)
- R. He, K.Z. Liu, S. Mei and X. Gui: A Gain-Scheduled Approach To The Transient Stabilization Of Power Systems, Proc. of SICE-ICCAS2006, pp.6047-6052 (2006.10)
- M.Q. Dao and K.Z. Liu: Development of a practical automatic parking technology for automobiles, Proc. of the 25th CCC, pp.2159-2164 (2006.8)
- R. He, K.Z. Liu, S. Mei and X. Gui: A gain-scheduled state feedback control method for the transient stability control of a single-machine infinite-bus power system, Proc. of the 25th CCC, pp. 2147-2152 (2006.8)
- D. Akasaka, Kang-Zhi Liu: Synthesis and stability analysis of a class of on-off feedback systems, Proc. of the 6th WCICA, pp.173-177 (2006.6)
- Kang-Zhi Liu: A new framework for adaptive control of linear systems: An adaptive robust control approach. Proc. of CDC-ECC’2005, , pp.137-142 (2005)
- R. He, K.Z. Liu and O. Saito: Nonlinear Output Feedback Control of A 5DOF AMB System, Proc. of IFAC World Conference 2005 (2005)
- K.Z. Liu, M.Q. Dao and T. Inoue: Theory and Experiments on Automatic Parking Systems, Proc. of the 8th International Conference on Control, Automation, Robotics and Vision, pp. 861-866 (2004)
- M.Q. Dao, K.Z. Liu and A. Ogata: Development of Auto-Parking Systems for 4-Wheeled Automobiles: Theory and Experiments, Proc. of IFAC NOLCOS 2004, pp. 1223-1228 (2004)
- T. Inoue, M.Q. Dao and K.Z. Liu: Development of an auto-parking system with physical limitations, Proc. Of SICE2004, pp.1015-1020 (2004.8)
- K.Z. Liu and Rong He: A Simple Derivation of ARE Solutions to The Standard H∞ Control Problem Based on LMI Solution, Proc. Of the 42nd IEEE Conference on Decision and Control, Maui, pp.1723-1728 (2003)
- K.Z. Liu, S. Namiki and H. Ishii: Velocity Control of 2-Mass-Spring Systems with Large Load Uncertainty --An Adaptive Backstepping Control Approach --, Proc. Of the 42nd IEEE Conference on Decision and Control, Maui, pp.3948-3953 (2003)
- A. Ogata, Y. Tashiro, K.Z. Liu and O. Saito: A new method to design discontinuous stabilizing controllers for chained systems, Proc. Of the 42nd IEEE Conference on Decision and Control, Maui, pp.5679-5684 (2003)
- K.Z. Liu and R. He: A nonlinear output feedback control method for magnetic bearing systems, Proc. Of SICE2003, pp.1838-1843 (2003.8)
- Y. Tabata, K. Makiguchi, S. Ouchi and K.Z. Liu: Control of a rotational crane considering anti-sway in the radial direction, Proc. Of SICE2003, pp.2273-2276 (2003.8)
- K.Z. Liu: A Piecewise Smooth Switching Control Algorithm for Chained Systems, Proc. of European Control Conference 2003, Cambridge (2003)
- K.Z. Liu and Rong He: A Nonlinear Output Feedback Control Method for Magnetic Bearing Systems, Proc. of European Control Conference 2003, Cambridge (2003)
- K.Z. Liu and Rong He: A Simple Derivation of ARE Solutions to The Standard H∞ Control Problem Based on LMI Solution, Proc. of European Control Conference 2003, Cambridge (2003)
- K.Z. Liu and Rong He: A Nonlinear Output Feedback Control Method for Magnetic Bearing Systems, Proc. of 2003 IEEE Conference on Control Applications (Istanbul) (2003)
- K.Z. Liu: A Piecewise Smooth Switching Control Algorithm for Chained Systems, Proc. of 2002 Asian Control Conference, Singapore, pp. 1064-1069 (2002)
- K.Z. Liu, S. Ouchi and N. Yamamoto: A Nonlinear Control Approach for Rotary Cranes, Proc. of 2002 Asian Control Conference, Singapore, pp. 687-692 (2002)
- K.Z. Liu, A. Ikai and A. Ogata: A Nonlinear Switching Control Method for Magnetic Bearing Systems, Proc. of 2002 IFAC World Conference (CD-ROM), Barcelona (2002)
- Y. Tabata, K. Ichise, S. Ouchi and K.Z. Liu: Anti-sway control system of a rotational crane using a nonlinear controller, Proc. Of SICE2002, pp.3060-3065 (2002.8)
- J. Fang, G. Gu and K.Z. Liu: Stability analysis for nonlinear feedback control systems with linear actuator, Proc. Of WCICA2002, pp.221-225 (2002.6)
- K. Z. Liu and A. Kanehara: Steering control of vehicles by discontinuous control approach, Proc. of 2001 American Control Conf., pp.1521-1526 (2001)
- K. Z. Liu and S. Ouchi: Global asymptotic control of rotational crane, Proc. of 2000 Chinese Control Conference (2000)
- J. Yanai, M. Murakami, S. Ouchi, K.Z. Liu and Y. Todaka: Anti-sway control system of a rotational crane using the nonlinear controller, Proc. of the 6th International Workshop on Advanced Motion Control, pp.419-422 (2000.3)
- K. Z. Liu: A quadratically semi-global control approach for nonlinear systems, Proc. of 1999 IEEE Conf. on Control and Decision,pp. 2477-2478(1999)
- K. Z. Liu and T. Sato: LMI solution to singular H2 control problems, Proc. of IFAC World Conference 1999, Beijing (1999)
- K. Z. Liu and M. Tanaka: Robust motion control of a unicycle robot, Proc. of MOVIC'98, pp. 907-912, Zurich (1998)
- S. B. Villas-Boas and K. Z. Liu: Constraint on steady state output imposed by zeros at s=0 and servo synthesis using unstable weight with application to multi area frequency control of power plants, Proc. of 1998 IEEE Conf. on Control Applications, pp. 1383-1388, Trieste (1998)
- K. Z. Liu, M. Hirata and T. Sato: All solutions to the H∞ control synthesis problem with unstable weights, Proc. of the 35th IEEE Conf. on Decision and Control, pp. 4641-4646, San Diego (1997)
- S. B. Villas-Boas, T. Mita and K. Z. Liu: Extended H∞ controller applied to frequency control of high power generation system, Proc. of the 35th IEEE Conf. on Decision and Control, pp. 761-766, Kobe (1996)
- H. Takeuchi, K. Z. Liu and S. Ohuchi: Velocity control of a mine truck system using rationally scaled H∞ control, Proc. of the 35th IEEE Conf. on Decision and Control, pp. 767-772, Kobe (1996)
- K. Z. Liu and T. Ohashi: Analysis of robust tracking performance for a class of uncertain plants with triangular structure, Proc. of the 35th IEEE Conf. on Decision and Control, pp. 4782-4787, Kobe (1996)
- K. Z. Liu, H. Zhang and T. Mita: H2 optimal control under comprehensive stability, Proc. of the 13th IFAC World Conference, D-285, San Francisco (1996)
- T. Takahashi, T. Matsumura and K. Z. Liu: An approach to robust iterative learning control, Proc. of MOVIC'96, pp. 393-398, Makuhari Messe (1996)
- M. Hirata, K. Z. Liu and T. Mita: Solvability Condition of an Extended H∞ Control Problem using Riccati Inequalities, Proc. of the 3rd MOVIC'96, pp. 387-392, Makuhari Messe (1996)
- M. Hirata, K. Z. Liu and T. Mita: Solvability Condition of an Extended H∞ Control Problem using Riccati Inequalities, Proc. of the 35th IEEE Conf. on Decision and Control, pp. 4522-4527, (1996)
- K. Z. Liu and T. Mita: Parameterization of comprehensive stabilizing controllers and analysis of its structure, Proc. of the 34th IEEE Conf. on Decision and Control, pp. 4108-4113, New Orleans (1995)
- K. Z. Liu and T. Mita: A unified stability analysis for regulator and servomechanism problems, Proc. of the 33rd IEEE Conf. on Decision and Control, pp. 4198-4203, Orlando (1994)
- S. Mizouchi, H. Takeuchi, M. Maki, K. Z. Liu and T. Mita: Robust control of a saucer-type helicopter, Proc. of the 1st Asian Control Conf., pp. 313-316, Tokyo (1994)
- K. Z. Liu and T. Mita: A unified stability theory for linear regulators and servomechanisms, Proc. of the 1st Asian Control Conf., pp. 969-972, Tokyo (1994)
- M.Hirata, K.Z. Liu, and T.Mita: Active Vibration Control of a 2-Mass Spring System using μ-Synthesis with Descriptor Form Representation, Proc. of the 3rd International Workshop on Advanced Motion Control, pp. 180-187, Berkeley (1994)
- T. Mita, K. Kuriyama and K. Z. Liu: H∞ control with unstable weighting functions -- A design of H∞ robust systems --, Proc. of the 32nd IEEE Conf. on Decision and Control, San Antonio (1993)
- K. Z. Liu, T. Mita and Z. H. Luo: Physical explanations of some Hp norms, Proc. of International Symposium MTNS'93, pp. 321-326, Regensberg (1993)
- K. Z. Liu and T. Mita: On robust steady state performance of feedback control systems, Proc. of the 31st IEEE Conf. on Decision and Control, pp. 225-230, Tucson (1992)
- M.Hirata, K.Z. Liu, T.Mita, and T.Yamaguchi. Head positioning control of a hard disk drive using H∞ theory, Proc. of the 31st IEEE Conf. on Decision and Control, pp. 2460-2461, Tucson (1992)
- K. Z. Liu and T. Mita: Generalized H∞ control theory, Proc. of 1992 American Control Conf., pp. 2245-2249, Chicago (1992)
- K. Z. Liu and T. Mita: On spectral factorization and Riccati equation, Proc. of 1992 American Control Conf., pp. 1143-1144, Chicago (1992)
- K. Z. Liu, T. Mita and H. Kimura: Complete solution to the standard H∞ control problem of discrete time systems, Proc. of the 29th IEEE Conf. on Decision and Control, pp. 1786-1793, Hawaii (1990)
- K. Z. Liu and T. Mita: Conjugation and H∞ control of discrete-time systems, Proc. of the 28th IEEE Conf. on Decision and Control, pp. 2309-2315, Tampa (1989)